./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NonTermination4.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/NonTermination4.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 94b61e96441ca10668b436b4ef10dfd9464f0863 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 10:41:30,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:41:30,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:41:30,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:41:30,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:41:30,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:41:30,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:41:30,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:41:30,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:41:30,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:41:30,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:41:30,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:41:30,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:41:30,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:41:30,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:41:30,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:41:30,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:41:30,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:41:30,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:41:30,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:41:30,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:41:30,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:41:30,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:41:30,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:41:30,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:41:30,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:41:30,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:41:30,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:41:30,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:41:30,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:41:30,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:41:30,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:41:30,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:41:30,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:41:30,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:41:30,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:41:30,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:41:30,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:41:30,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:41:30,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:41:30,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:41:30,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:41:30,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:41:30,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:41:30,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:41:30,431 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:41:30,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:41:30,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:41:30,434 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:41:30,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:41:30,434 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:41:30,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:41:30,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:41:30,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:41:30,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:41:30,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:41:30,435 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:41:30,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:41:30,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:41:30,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:41:30,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:41:30,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:41:30,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:41:30,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:41:30,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:41:30,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:41:30,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:41:30,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:41:30,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:41:30,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:41:30,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:41:30,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2021-08-27 10:41:30,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:41:30,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:41:30,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:41:30,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:41:30,772 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:41:30,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NonTermination4.c [2021-08-27 10:41:30,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d1e701fc/67943ab8fa834b22adebbf6eb1ccb74a/FLAG6f61c3076 [2021-08-27 10:41:31,274 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:41:31,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NonTermination4.c [2021-08-27 10:41:31,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d1e701fc/67943ab8fa834b22adebbf6eb1ccb74a/FLAG6f61c3076 [2021-08-27 10:41:31,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d1e701fc/67943ab8fa834b22adebbf6eb1ccb74a [2021-08-27 10:41:31,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:41:31,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:41:31,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:41:31,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:41:31,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:41:31,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:41:31" (1/1) ... [2021-08-27 10:41:31,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d64655a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31, skipping insertion in model container [2021-08-27 10:41:31,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:41:31" (1/1) ... [2021-08-27 10:41:31,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:41:31,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:41:31,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:41:31,438 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:41:31,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:41:31,458 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:41:31,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31 WrapperNode [2021-08-27 10:41:31,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:41:31,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:41:31,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:41:31,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:41:31,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31" (1/1) ... [2021-08-27 10:41:31,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31" (1/1) ... [2021-08-27 10:41:31,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:41:31,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:41:31,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:41:31,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:41:31,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31" (1/1) ... [2021-08-27 10:41:31,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31" (1/1) ... [2021-08-27 10:41:31,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31" (1/1) ... [2021-08-27 10:41:31,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31" (1/1) ... [2021-08-27 10:41:31,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31" (1/1) ... [2021-08-27 10:41:31,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31" (1/1) ... [2021-08-27 10:41:31,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31" (1/1) ... [2021-08-27 10:41:31,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:41:31,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:41:31,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:41:31,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:41:31,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31" (1/1) ... [2021-08-27 10:41:31,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:41:31,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:31,571 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 10:41:31,574 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 10:41:31,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:41:31,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:41:31,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:41:31,770 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 10:41:31,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:41:31 BoogieIcfgContainer [2021-08-27 10:41:31,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:41:31,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:41:31,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:41:31,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:41:31,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:41:31" (1/3) ... [2021-08-27 10:41:31,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fe9cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:41:31, skipping insertion in model container [2021-08-27 10:41:31,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:31" (2/3) ... [2021-08-27 10:41:31,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fe9cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:41:31, skipping insertion in model container [2021-08-27 10:41:31,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:41:31" (3/3) ... [2021-08-27 10:41:31,779 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2021-08-27 10:41:31,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:41:31,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-27 10:41:31,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:41:31,841 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 10:41:31,841 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-27 10:41:31,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-08-27 10:41:31,861 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:31,861 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-08-27 10:41:31,862 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:31,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:31,867 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-08-27 10:41:31,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:31,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017869282] [2021-08-27 10:41:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:31,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:32,010 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 10:41:32,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:32,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017869282] [2021-08-27 10:41:32,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017869282] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:41:32,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:41:32,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:41:32,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146790879] [2021-08-27 10:41:32,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:41:32,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:32,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:41:32,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:41:32,034 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:32,120 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-08-27 10:41:32,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:41:32,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-08-27 10:41:32,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:32,142 INFO L225 Difference]: With dead ends: 22 [2021-08-27 10:41:32,142 INFO L226 Difference]: Without dead ends: 13 [2021-08-27 10:41:32,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:41:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-27 10:41:32,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-08-27 10:41:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-08-27 10:41:32,185 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2021-08-27 10:41:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:32,185 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-08-27 10:41:32,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-08-27 10:41:32,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-27 10:41:32,186 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:32,186 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-27 10:41:32,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:41:32,187 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:32,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:32,188 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-08-27 10:41:32,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:32,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070415223] [2021-08-27 10:41:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:32,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:32,216 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 10:41:32,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:32,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070415223] [2021-08-27 10:41:32,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070415223] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:41:32,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:41:32,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:41:32,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954393561] [2021-08-27 10:41:32,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:41:32,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:32,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:41:32,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:41:32,220 INFO L87 Difference]: Start difference. First operand 12 states and 12 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 10:41:32,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:32,237 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-08-27 10:41:32,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:41:32,238 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 10:41:32,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:32,239 INFO L225 Difference]: With dead ends: 12 [2021-08-27 10:41:32,239 INFO L226 Difference]: Without dead ends: 11 [2021-08-27 10:41:32,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:41:32,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-27 10:41:32,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-27 10:41:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-08-27 10:41:32,245 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2021-08-27 10:41:32,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:32,245 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-08-27 10:41:32,246 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 10:41:32,246 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-08-27 10:41:32,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:41:32,247 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:32,247 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:41:32,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:41:32,248 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:32,256 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2021-08-27 10:41:32,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:32,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318562553] [2021-08-27 10:41:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:32,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:32,297 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 10:41:32,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:32,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318562553] [2021-08-27 10:41:32,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318562553] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:41:32,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:41:32,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:41:32,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726111097] [2021-08-27 10:41:32,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:41:32,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:32,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:41:32,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:41:32,307 INFO L87 Difference]: Start difference. First operand 11 states and 11 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 10:41:32,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:32,331 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-08-27 10:41:32,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:41:32,332 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 10:41:32,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:32,333 INFO L225 Difference]: With dead ends: 15 [2021-08-27 10:41:32,333 INFO L226 Difference]: Without dead ends: 14 [2021-08-27 10:41:32,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:41:32,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-08-27 10:41:32,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-08-27 10:41:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-08-27 10:41:32,339 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2021-08-27 10:41:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:32,339 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-08-27 10:41:32,340 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 10:41:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-08-27 10:41:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 10:41:32,340 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:32,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 10:41:32,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 10:41:32,341 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:32,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:32,341 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-08-27 10:41:32,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:32,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717511986] [2021-08-27 10:41:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:32,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:32,375 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 10:41:32,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:32,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717511986] [2021-08-27 10:41:32,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717511986] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:41:32,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:41:32,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:41:32,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407760174] [2021-08-27 10:41:32,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:41:32,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:32,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:41:32,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:41:32,378 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:32,384 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-08-27 10:41:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:41:32,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-27 10:41:32,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:32,385 INFO L225 Difference]: With dead ends: 13 [2021-08-27 10:41:32,385 INFO L226 Difference]: Without dead ends: 12 [2021-08-27 10:41:32,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:41:32,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-08-27 10:41:32,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-08-27 10:41:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-08-27 10:41:32,387 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2021-08-27 10:41:32,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:32,388 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-08-27 10:41:32,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,388 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-08-27 10:41:32,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 10:41:32,388 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:32,388 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:32,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 10:41:32,389 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:32,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2021-08-27 10:41:32,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:32,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644521720] [2021-08-27 10:41:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:32,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:32,424 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 10:41:32,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:32,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644521720] [2021-08-27 10:41:32,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644521720] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:32,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043589760] [2021-08-27 10:41:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:32,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:32,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:32,427 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 10:41:32,428 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 10:41:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:32,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 10:41:32,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:32,520 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 10:41:32,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043589760] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:32,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:32,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-08-27 10:41:32,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311458896] [2021-08-27 10:41:32,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:41:32,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:32,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:41:32,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:41:32,522 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:32,539 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-08-27 10:41:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:41:32,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-27 10:41:32,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:32,540 INFO L225 Difference]: With dead ends: 17 [2021-08-27 10:41:32,540 INFO L226 Difference]: Without dead ends: 16 [2021-08-27 10:41:32,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:41:32,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-27 10:41:32,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-08-27 10:41:32,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-08-27 10:41:32,543 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-08-27 10:41:32,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:32,544 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-08-27 10:41:32,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-08-27 10:41:32,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 10:41:32,544 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:32,544 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-08-27 10:41:32,565 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 10:41:32,753 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 10:41:32,753 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:32,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:32,754 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2021-08-27 10:41:32,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:32,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603818063] [2021-08-27 10:41:32,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:32,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:32,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:32,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603818063] [2021-08-27 10:41:32,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603818063] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:32,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152090316] [2021-08-27 10:41:32,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:32,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:32,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:32,809 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 10:41:32,821 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 10:41:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:32,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 10:41:32,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:32,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152090316] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:32,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:32,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-08-27 10:41:32,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322186843] [2021-08-27 10:41:32,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:41:32,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:32,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:41:32,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:41:32,885 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:32,895 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-08-27 10:41:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:41:32,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-27 10:41:32,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:32,896 INFO L225 Difference]: With dead ends: 19 [2021-08-27 10:41:32,897 INFO L226 Difference]: Without dead ends: 18 [2021-08-27 10:41:32,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:41:32,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-27 10:41:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-08-27 10:41:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-08-27 10:41:32,900 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2021-08-27 10:41:32,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:32,900 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-08-27 10:41:32,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,901 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-08-27 10:41:32,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 10:41:32,901 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:32,901 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2021-08-27 10:41:32,939 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 10:41:33,117 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,SelfDestructingSolverStorable5 [2021-08-27 10:41:33,117 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:33,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:33,118 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2021-08-27 10:41:33,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:33,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508750859] [2021-08-27 10:41:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:33,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:33,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:33,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508750859] [2021-08-27 10:41:33,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508750859] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:33,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872784985] [2021-08-27 10:41:33,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:41:33,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:33,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:33,166 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 10:41:33,169 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 10:41:33,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:41:33,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:33,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 10:41:33,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:33,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872784985] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:33,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:33,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-27 10:41:33,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994256148] [2021-08-27 10:41:33,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 10:41:33,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:33,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 10:41:33,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:41:33,303 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:33,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:33,336 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-08-27 10:41:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 10:41:33,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-27 10:41:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:33,337 INFO L225 Difference]: With dead ends: 22 [2021-08-27 10:41:33,337 INFO L226 Difference]: Without dead ends: 21 [2021-08-27 10:41:33,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:41:33,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-27 10:41:33,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-08-27 10:41:33,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 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 10:41:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-08-27 10:41:33,341 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2021-08-27 10:41:33,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:33,342 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-08-27 10:41:33,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:33,342 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-08-27 10:41:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 10:41:33,343 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:33,343 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2021-08-27 10:41:33,363 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 10:41:33,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:33,563 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:33,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:33,563 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2021-08-27 10:41:33,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:33,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353117101] [2021-08-27 10:41:33,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:33,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:33,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:33,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353117101] [2021-08-27 10:41:33,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353117101] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:33,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369328893] [2021-08-27 10:41:33,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:41:33,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:33,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:33,604 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 10:41:33,608 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 10:41:33,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:41:33,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:33,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 10:41:33,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:33,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369328893] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:33,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:33,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-27 10:41:33,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959329349] [2021-08-27 10:41:33,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 10:41:33,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:33,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 10:41:33,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:41:33,712 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:33,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:33,726 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-08-27 10:41:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 10:41:33,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-27 10:41:33,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:33,727 INFO L225 Difference]: With dead ends: 24 [2021-08-27 10:41:33,727 INFO L226 Difference]: Without dead ends: 23 [2021-08-27 10:41:33,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:41:33,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-27 10:41:33,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-08-27 10:41:33,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.1) internal successors, (22), 21 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 10:41:33,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-08-27 10:41:33,730 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2021-08-27 10:41:33,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:33,731 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-08-27 10:41:33,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-08-27 10:41:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 10:41:33,731 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:33,731 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2021-08-27 10:41:33,749 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 10:41:33,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:33,937 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:33,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:33,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2021-08-27 10:41:33,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:33,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547327850] [2021-08-27 10:41:33,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:33,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:33,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:33,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547327850] [2021-08-27 10:41:33,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547327850] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:33,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874357868] [2021-08-27 10:41:33,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:41:33,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:33,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:34,004 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 10:41:34,006 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 10:41:34,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-27 10:41:34,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:34,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:41:34,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:34,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874357868] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:34,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:34,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-27 10:41:34,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908114473] [2021-08-27 10:41:34,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 10:41:34,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:34,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 10:41:34,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:41:34,192 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 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 10:41:34,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:34,222 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-08-27 10:41:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:41:34,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-27 10:41:34,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:34,225 INFO L225 Difference]: With dead ends: 27 [2021-08-27 10:41:34,225 INFO L226 Difference]: Without dead ends: 26 [2021-08-27 10:41:34,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 26.7ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:41:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-08-27 10:41:34,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-08-27 10:41:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-08-27 10:41:34,239 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2021-08-27 10:41:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:34,240 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-08-27 10:41:34,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 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 10:41:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-08-27 10:41:34,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 10:41:34,241 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:34,241 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2021-08-27 10:41:34,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:34,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:34,447 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:34,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:34,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2021-08-27 10:41:34,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:34,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578133335] [2021-08-27 10:41:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:34,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:34,490 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 10:41:34,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:34,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578133335] [2021-08-27 10:41:34,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578133335] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:34,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15914103] [2021-08-27 10:41:34,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:41:34,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:34,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:34,509 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 10:41:34,512 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 10:41:34,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-27 10:41:34,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:34,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:41:34,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:34,668 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 10:41:34,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15914103] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:34,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:34,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-27 10:41:34,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157233900] [2021-08-27 10:41:34,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 10:41:34,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:34,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 10:41:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:41:34,670 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 6 states, 5 states have (on average 4.0) 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 10:41:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:34,686 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-08-27 10:41:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:41:34,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) 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 20 [2021-08-27 10:41:34,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:34,687 INFO L225 Difference]: With dead ends: 29 [2021-08-27 10:41:34,687 INFO L226 Difference]: Without dead ends: 28 [2021-08-27 10:41:34,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.2ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:41:34,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-27 10:41:34,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-08-27 10:41:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-08-27 10:41:34,690 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2021-08-27 10:41:34,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:34,691 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-08-27 10:41:34,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) 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 10:41:34,691 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-08-27 10:41:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 10:41:34,691 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:34,692 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2021-08-27 10:41:34,718 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 10:41:34,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:34,907 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:34,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2021-08-27 10:41:34,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:34,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143318457] [2021-08-27 10:41:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:34,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:34,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:34,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143318457] [2021-08-27 10:41:34,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143318457] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:34,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56330590] [2021-08-27 10:41:34,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:41:34,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:34,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:34,970 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 10:41:34,971 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 10:41:35,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:41:35,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:35,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 10:41:35,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:35,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56330590] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:35,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:35,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-27 10:41:35,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350812246] [2021-08-27 10:41:35,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 10:41:35,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 10:41:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:41:35,149 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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 10:41:35,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:35,186 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-08-27 10:41:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 10:41:35,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) Word has length 23 [2021-08-27 10:41:35,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:35,187 INFO L225 Difference]: With dead ends: 32 [2021-08-27 10:41:35,188 INFO L226 Difference]: Without dead ends: 31 [2021-08-27 10:41:35,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:41:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-27 10:41:35,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-08-27 10:41:35,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 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 10:41:35,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-08-27 10:41:35,191 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2021-08-27 10:41:35,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:35,192 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-08-27 10:41:35,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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 10:41:35,192 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-08-27 10:41:35,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-27 10:41:35,193 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:35,193 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2021-08-27 10:41:35,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-08-27 10:41:35,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:35,409 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:35,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:35,409 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2021-08-27 10:41:35,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:35,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938528662] [2021-08-27 10:41:35,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:35,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:35,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:35,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938528662] [2021-08-27 10:41:35,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938528662] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:35,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349796538] [2021-08-27 10:41:35,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:41:35,484 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:35,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:35,485 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 10:41:35,509 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 10:41:35,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:41:35,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:35,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 10:41:35,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:35,686 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:35,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349796538] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:35,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:35,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-27 10:41:35,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873022852] [2021-08-27 10:41:35,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 10:41:35,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:35,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 10:41:35,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:41:35,689 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:35,717 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-08-27 10:41:35,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 10:41:35,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-27 10:41:35,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:35,720 INFO L225 Difference]: With dead ends: 34 [2021-08-27 10:41:35,720 INFO L226 Difference]: Without dead ends: 33 [2021-08-27 10:41:35,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:41:35,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-27 10:41:35,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-08-27 10:41:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-08-27 10:41:35,729 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2021-08-27 10:41:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:35,729 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-08-27 10:41:35,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-08-27 10:41:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-27 10:41:35,730 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:35,730 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2021-08-27 10:41:35,759 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 10:41:35,944 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,SelfDestructingSolverStorable11 [2021-08-27 10:41:35,945 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:35,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:35,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2021-08-27 10:41:35,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:35,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31050551] [2021-08-27 10:41:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:35,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:36,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:36,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31050551] [2021-08-27 10:41:36,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31050551] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:36,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268456096] [2021-08-27 10:41:36,026 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:41:36,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:36,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:36,027 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 10:41:36,029 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 10:41:36,112 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-27 10:41:36,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:36,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 10:41:36,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:36,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268456096] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:36,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:36,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-27 10:41:36,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578254349] [2021-08-27 10:41:36,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 10:41:36,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:36,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 10:41:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:41:36,251 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 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 10:41:36,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:36,285 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-08-27 10:41:36,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 10:41:36,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 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 10:41:36,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:36,286 INFO L225 Difference]: With dead ends: 37 [2021-08-27 10:41:36,286 INFO L226 Difference]: Without dead ends: 36 [2021-08-27 10:41:36,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 58.4ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:41:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-27 10:41:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-08-27 10:41:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 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 10:41:36,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-08-27 10:41:36,290 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2021-08-27 10:41:36,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:36,290 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-08-27 10:41:36,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 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 10:41:36,290 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-08-27 10:41:36,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-27 10:41:36,291 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:36,291 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2021-08-27 10:41:36,311 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 10:41:36,508 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,SelfDestructingSolverStorable12 [2021-08-27 10:41:36,508 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:36,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:36,509 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2021-08-27 10:41:36,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:36,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667022649] [2021-08-27 10:41:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:36,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:36,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:36,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667022649] [2021-08-27 10:41:36,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667022649] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:36,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002442326] [2021-08-27 10:41:36,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:41:36,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:36,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:36,597 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 10:41:36,623 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 10:41:36,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-27 10:41:36,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:36,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 10:41:36,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:36,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002442326] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:36,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:36,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-27 10:41:36,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898486253] [2021-08-27 10:41:36,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 10:41:36,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 10:41:36,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:41:36,843 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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 10:41:36,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:36,893 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-08-27 10:41:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 10:41:36,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-08-27 10:41:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:36,894 INFO L225 Difference]: With dead ends: 39 [2021-08-27 10:41:36,895 INFO L226 Difference]: Without dead ends: 38 [2021-08-27 10:41:36,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:41:36,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-27 10:41:36,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-08-27 10:41:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-08-27 10:41:36,898 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2021-08-27 10:41:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:36,899 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-08-27 10:41:36,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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 10:41:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-08-27 10:41:36,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 10:41:36,900 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:36,900 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2021-08-27 10:41:36,921 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 10:41:37,112 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,SelfDestructingSolverStorable13 [2021-08-27 10:41:37,113 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:37,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:37,119 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2021-08-27 10:41:37,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:37,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036702347] [2021-08-27 10:41:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:37,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:37,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:37,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036702347] [2021-08-27 10:41:37,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036702347] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:37,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412809971] [2021-08-27 10:41:37,211 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:41:37,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:37,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:37,217 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 10:41:37,236 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 10:41:37,349 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-27 10:41:37,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:37,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 10:41:37,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:37,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412809971] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:37,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:37,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-08-27 10:41:37,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502788559] [2021-08-27 10:41:37,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 10:41:37,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:37,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 10:41:37,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-08-27 10:41:37,495 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:37,536 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-08-27 10:41:37,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 10:41:37,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-27 10:41:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:37,540 INFO L225 Difference]: With dead ends: 42 [2021-08-27 10:41:37,541 INFO L226 Difference]: Without dead ends: 41 [2021-08-27 10:41:37,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 61.8ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-08-27 10:41:37,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-27 10:41:37,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-08-27 10:41:37,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 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 10:41:37,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-08-27 10:41:37,544 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2021-08-27 10:41:37,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:37,544 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-08-27 10:41:37,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:37,545 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-08-27 10:41:37,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-27 10:41:37,545 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:37,546 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2021-08-27 10:41:37,575 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 10:41:37,769 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,SelfDestructingSolverStorable14 [2021-08-27 10:41:37,769 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:37,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2021-08-27 10:41:37,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:37,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177493195] [2021-08-27 10:41:37,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:37,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:37,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:37,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177493195] [2021-08-27 10:41:37,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177493195] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:37,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144044941] [2021-08-27 10:41:37,829 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:41:37,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:37,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:37,830 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 10:41:37,831 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 10:41:37,981 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-27 10:41:37,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:37,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 10:41:37,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:38,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144044941] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:38,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:38,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-08-27 10:41:38,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553476256] [2021-08-27 10:41:38,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 10:41:38,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:38,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 10:41:38,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-08-27 10:41:38,145 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 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 10:41:38,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:38,177 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-08-27 10:41:38,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 10:41:38,183 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-08-27 10:41:38,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:38,183 INFO L225 Difference]: With dead ends: 44 [2021-08-27 10:41:38,183 INFO L226 Difference]: Without dead ends: 43 [2021-08-27 10:41:38,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-08-27 10:41:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-27 10:41:38,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-08-27 10:41:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:38,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-08-27 10:41:38,187 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2021-08-27 10:41:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:38,187 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-08-27 10:41:38,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 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 10:41:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-08-27 10:41:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-27 10:41:38,188 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:38,188 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2021-08-27 10:41:38,214 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 10:41:38,404 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,SelfDestructingSolverStorable15 [2021-08-27 10:41:38,405 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:38,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:38,405 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2021-08-27 10:41:38,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:38,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101412907] [2021-08-27 10:41:38,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:38,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:38,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:38,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101412907] [2021-08-27 10:41:38,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101412907] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:38,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704635957] [2021-08-27 10:41:38,486 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:41:38,487 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:38,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:38,488 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 10:41:38,489 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 10:41:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:38,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 10:41:38,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:38,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704635957] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:38,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:38,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-08-27 10:41:38,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82444110] [2021-08-27 10:41:38,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 10:41:38,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:38,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 10:41:38,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:41:38,826 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:38,878 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-08-27 10:41:38,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 10:41:38,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-08-27 10:41:38,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:38,879 INFO L225 Difference]: With dead ends: 47 [2021-08-27 10:41:38,879 INFO L226 Difference]: Without dead ends: 46 [2021-08-27 10:41:38,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:41:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-27 10:41:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-08-27 10:41:38,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-08-27 10:41:38,883 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2021-08-27 10:41:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:38,883 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-08-27 10:41:38,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-08-27 10:41:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-27 10:41:38,884 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:38,884 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2021-08-27 10:41:38,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-08-27 10:41:39,104 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,SelfDestructingSolverStorable16 [2021-08-27 10:41:39,105 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:39,105 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2021-08-27 10:41:39,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:39,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011378894] [2021-08-27 10:41:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:39,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:39,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:39,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011378894] [2021-08-27 10:41:39,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011378894] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:39,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412693520] [2021-08-27 10:41:39,182 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:41:39,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:39,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:39,183 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 10:41:39,184 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 10:41:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:39,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 10:41:39,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:39,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412693520] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:39,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:39,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-08-27 10:41:39,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914413137] [2021-08-27 10:41:39,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 10:41:39,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 10:41:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:41:39,522 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 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 10:41:39,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:39,549 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-08-27 10:41:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 10:41:39,550 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 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 10:41:39,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:39,550 INFO L225 Difference]: With dead ends: 49 [2021-08-27 10:41:39,550 INFO L226 Difference]: Without dead ends: 48 [2021-08-27 10:41:39,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:41:39,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-27 10:41:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-08-27 10:41:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-08-27 10:41:39,554 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2021-08-27 10:41:39,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:39,555 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-08-27 10:41:39,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 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 10:41:39,555 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-08-27 10:41:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-27 10:41:39,556 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:39,556 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2021-08-27 10:41:39,583 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 10:41:39,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:39,777 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:39,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:39,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2021-08-27 10:41:39,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:39,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884404624] [2021-08-27 10:41:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:39,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:39,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:39,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884404624] [2021-08-27 10:41:39,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884404624] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:39,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978936123] [2021-08-27 10:41:39,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:41:39,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:39,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:39,878 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 10:41:39,879 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 10:41:40,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:41:40,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:40,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 10:41:40,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:40,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978936123] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:40,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:40,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-08-27 10:41:40,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457541002] [2021-08-27 10:41:40,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 10:41:40,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:40,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 10:41:40,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:41:40,242 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:40,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:40,287 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-08-27 10:41:40,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 10:41:40,287 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-08-27 10:41:40,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:40,289 INFO L225 Difference]: With dead ends: 52 [2021-08-27 10:41:40,289 INFO L226 Difference]: Without dead ends: 51 [2021-08-27 10:41:40,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 97.2ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:41:40,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-08-27 10:41:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-08-27 10:41:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-08-27 10:41:40,309 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2021-08-27 10:41:40,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:40,310 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-08-27 10:41:40,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:40,310 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-08-27 10:41:40,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-27 10:41:40,311 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:40,311 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2021-08-27 10:41:40,332 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 10:41:40,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:40,525 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:40,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:40,525 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2021-08-27 10:41:40,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:40,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831706414] [2021-08-27 10:41:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:40,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:40,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:40,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831706414] [2021-08-27 10:41:40,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831706414] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:40,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346562891] [2021-08-27 10:41:40,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:41:40,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:40,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:40,610 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 10:41:40,620 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 10:41:40,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:41:40,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:40,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 10:41:40,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:41,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346562891] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:41,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:41,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-08-27 10:41:41,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896063235] [2021-08-27 10:41:41,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 10:41:41,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:41,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 10:41:41,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:41:41,004 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:41,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:41,030 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-08-27 10:41:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 10:41:41,031 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-27 10:41:41,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:41,031 INFO L225 Difference]: With dead ends: 54 [2021-08-27 10:41:41,031 INFO L226 Difference]: Without dead ends: 53 [2021-08-27 10:41:41,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:41:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-08-27 10:41:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-08-27 10:41:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.04) internal successors, (52), 51 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 10:41:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-08-27 10:41:41,033 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2021-08-27 10:41:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:41,034 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-08-27 10:41:41,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-08-27 10:41:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-27 10:41:41,034 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:41,034 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2021-08-27 10:41:41,054 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 10:41:41,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:41,241 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:41,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:41,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2021-08-27 10:41:41,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:41,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852944854] [2021-08-27 10:41:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:41,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:41,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:41,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852944854] [2021-08-27 10:41:41,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852944854] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:41,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287987784] [2021-08-27 10:41:41,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:41:41,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:41,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:41,333 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 10:41:41,355 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 10:41:41,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-08-27 10:41:41,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:41,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 10:41:41,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:41,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287987784] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:41,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:41,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-08-27 10:41:41,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207623534] [2021-08-27 10:41:41,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 10:41:41,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:41,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 10:41:41,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-08-27 10:41:41,772 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:41,815 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-08-27 10:41:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 10:41:41,816 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-27 10:41:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:41,817 INFO L225 Difference]: With dead ends: 57 [2021-08-27 10:41:41,817 INFO L226 Difference]: Without dead ends: 56 [2021-08-27 10:41:41,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-08-27 10:41:41,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-27 10:41:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2021-08-27 10:41:41,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:41,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2021-08-27 10:41:41,820 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2021-08-27 10:41:41,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:41,820 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2021-08-27 10:41:41,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:41,821 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2021-08-27 10:41:41,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-27 10:41:41,821 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:41,821 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2021-08-27 10:41:41,842 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 10:41:42,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:42,033 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:42,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:42,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2021-08-27 10:41:42,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:42,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41959019] [2021-08-27 10:41:42,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:42,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:42,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:42,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41959019] [2021-08-27 10:41:42,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41959019] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:42,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021405728] [2021-08-27 10:41:42,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:41:42,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:42,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:42,146 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 10:41:42,169 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 10:41:42,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-08-27 10:41:42,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:42,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 10:41:42,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:42,637 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:42,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021405728] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:42,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:42,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-08-27 10:41:42,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052422511] [2021-08-27 10:41:42,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 10:41:42,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:42,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 10:41:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-08-27 10:41:42,638 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:42,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:42,674 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-08-27 10:41:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 10:41:42,676 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-08-27 10:41:42,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:42,676 INFO L225 Difference]: With dead ends: 59 [2021-08-27 10:41:42,676 INFO L226 Difference]: Without dead ends: 58 [2021-08-27 10:41:42,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 111.8ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-08-27 10:41:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-27 10:41:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2021-08-27 10:41:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2021-08-27 10:41:42,679 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2021-08-27 10:41:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:42,680 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2021-08-27 10:41:42,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2021-08-27 10:41:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-27 10:41:42,681 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:42,681 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2021-08-27 10:41:42,698 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 10:41:42,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:42,885 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:42,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:42,885 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2021-08-27 10:41:42,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:42,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984332629] [2021-08-27 10:41:42,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:42,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:42,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:42,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984332629] [2021-08-27 10:41:42,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984332629] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:42,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924954726] [2021-08-27 10:41:42,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:41:42,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:42,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:42,993 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 10:41:43,002 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 10:41:43,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:41:43,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:43,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 10:41:43,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:43,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924954726] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:43,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:43,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-08-27 10:41:43,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666208327] [2021-08-27 10:41:43,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 10:41:43,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:43,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 10:41:43,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-27 10:41:43,494 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 13 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:43,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:43,540 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-08-27 10:41:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 10:41:43,541 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-08-27 10:41:43,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:43,541 INFO L225 Difference]: With dead ends: 62 [2021-08-27 10:41:43,541 INFO L226 Difference]: Without dead ends: 61 [2021-08-27 10:41:43,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 147.3ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-27 10:41:43,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-08-27 10:41:43,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2021-08-27 10:41:43,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:43,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-08-27 10:41:43,544 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2021-08-27 10:41:43,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:43,544 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-08-27 10:41:43,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:43,544 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-08-27 10:41:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-27 10:41:43,545 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:43,545 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2021-08-27 10:41:43,575 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 10:41:43,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:43,773 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:43,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2021-08-27 10:41:43,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:43,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558189285] [2021-08-27 10:41:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:43,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:43,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:43,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558189285] [2021-08-27 10:41:43,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558189285] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:43,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604301862] [2021-08-27 10:41:43,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:41:43,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:43,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:43,889 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 10:41:43,890 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 10:41:44,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:41:44,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:44,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 10:41:44,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:44,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604301862] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:44,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:44,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-08-27 10:41:44,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39482479] [2021-08-27 10:41:44,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 10:41:44,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:44,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 10:41:44,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-27 10:41:44,374 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:44,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:44,410 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-08-27 10:41:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 10:41:44,411 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-08-27 10:41:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:44,411 INFO L225 Difference]: With dead ends: 64 [2021-08-27 10:41:44,411 INFO L226 Difference]: Without dead ends: 63 [2021-08-27 10:41:44,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-27 10:41:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-08-27 10:41:44,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-08-27 10:41:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:44,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-08-27 10:41:44,414 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2021-08-27 10:41:44,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:44,414 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-08-27 10:41:44,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:44,414 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-08-27 10:41:44,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-27 10:41:44,415 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:44,415 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2021-08-27 10:41:44,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-08-27 10:41:44,620 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,SelfDestructingSolverStorable23 [2021-08-27 10:41:44,621 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:44,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:44,621 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2021-08-27 10:41:44,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:44,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253049065] [2021-08-27 10:41:44,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:44,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:44,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:44,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253049065] [2021-08-27 10:41:44,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253049065] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:44,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583987756] [2021-08-27 10:41:44,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:41:44,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:44,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:44,740 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 10:41:44,742 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 10:41:45,008 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-08-27 10:41:45,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:45,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 10:41:45,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:45,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583987756] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:45,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:45,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-08-27 10:41:45,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650475707] [2021-08-27 10:41:45,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 10:41:45,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:45,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 10:41:45,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-08-27 10:41:45,307 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 14 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 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 10:41:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:45,360 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-08-27 10:41:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 10:41:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 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 10:41:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:45,361 INFO L225 Difference]: With dead ends: 67 [2021-08-27 10:41:45,361 INFO L226 Difference]: Without dead ends: 66 [2021-08-27 10:41:45,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 166.7ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-08-27 10:41:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-27 10:41:45,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-08-27 10:41:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2021-08-27 10:41:45,364 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2021-08-27 10:41:45,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:45,364 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2021-08-27 10:41:45,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 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 10:41:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2021-08-27 10:41:45,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-27 10:41:45,365 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:45,365 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2021-08-27 10:41:45,394 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 10:41:45,580 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,SelfDestructingSolverStorable24 [2021-08-27 10:41:45,581 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2021-08-27 10:41:45,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:45,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337839203] [2021-08-27 10:41:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:45,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:45,714 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:45,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:45,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337839203] [2021-08-27 10:41:45,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337839203] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:45,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665091420] [2021-08-27 10:41:45,715 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:41:45,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:45,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:45,716 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 10:41:45,716 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 10:41:45,999 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-08-27 10:41:45,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:46,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 10:41:46,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:46,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665091420] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:46,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:46,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-08-27 10:41:46,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701827751] [2021-08-27 10:41:46,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 10:41:46,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:46,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 10:41:46,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-08-27 10:41:46,286 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:46,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:46,314 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2021-08-27 10:41:46,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 10:41:46,314 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-08-27 10:41:46,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:46,316 INFO L225 Difference]: With dead ends: 69 [2021-08-27 10:41:46,317 INFO L226 Difference]: Without dead ends: 68 [2021-08-27 10:41:46,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 153.5ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-08-27 10:41:46,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-08-27 10:41:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2021-08-27 10:41:46,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:46,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2021-08-27 10:41:46,318 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2021-08-27 10:41:46,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:46,319 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2021-08-27 10:41:46,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:46,319 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2021-08-27 10:41:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-27 10:41:46,319 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:46,319 INFO L512 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2021-08-27 10:41:46,339 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 10:41:46,520 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,SelfDestructingSolverStorable25 [2021-08-27 10:41:46,520 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:46,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:46,521 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2021-08-27 10:41:46,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:46,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021129572] [2021-08-27 10:41:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:46,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:46,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:46,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021129572] [2021-08-27 10:41:46,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021129572] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:46,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334470951] [2021-08-27 10:41:46,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:41:46,658 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:46,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:46,661 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 10:41:46,686 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 10:41:47,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-08-27 10:41:47,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:47,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 10:41:47,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:47,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334470951] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:47,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:47,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-08-27 10:41:47,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409573491] [2021-08-27 10:41:47,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 10:41:47,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 10:41:47,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-08-27 10:41:47,313 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 15 states, 14 states have (on average 4.5) internal successors, (63), 14 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 10:41:47,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:47,373 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-08-27 10:41:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 10:41:47,374 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 14 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 63 [2021-08-27 10:41:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:47,374 INFO L225 Difference]: With dead ends: 72 [2021-08-27 10:41:47,375 INFO L226 Difference]: Without dead ends: 71 [2021-08-27 10:41:47,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 173.9ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-08-27 10:41:47,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-27 10:41:47,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-08-27 10:41:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 69 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 10:41:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-08-27 10:41:47,377 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2021-08-27 10:41:47,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:47,378 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-08-27 10:41:47,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 14 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 10:41:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-08-27 10:41:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-27 10:41:47,378 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:47,379 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2021-08-27 10:41:47,406 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 10:41:47,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:47,603 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:47,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:47,603 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2021-08-27 10:41:47,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:47,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621091122] [2021-08-27 10:41:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:47,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:47,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:47,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621091122] [2021-08-27 10:41:47,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621091122] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:47,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400784019] [2021-08-27 10:41:47,731 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:41:47,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:47,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:47,732 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 10:41:47,733 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 10:41:48,064 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-08-27 10:41:48,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:48,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 10:41:48,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:48,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400784019] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:48,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:48,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-08-27 10:41:48,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912517632] [2021-08-27 10:41:48,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 10:41:48,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:48,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 10:41:48,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-08-27 10:41:48,367 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:48,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:48,402 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2021-08-27 10:41:48,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 10:41:48,403 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-08-27 10:41:48,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:48,403 INFO L225 Difference]: With dead ends: 74 [2021-08-27 10:41:48,403 INFO L226 Difference]: Without dead ends: 73 [2021-08-27 10:41:48,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 181.6ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-08-27 10:41:48,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-27 10:41:48,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2021-08-27 10:41:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-08-27 10:41:48,406 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2021-08-27 10:41:48,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:48,406 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-08-27 10:41:48,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-08-27 10:41:48,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-27 10:41:48,407 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:48,407 INFO L512 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2021-08-27 10:41:48,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-08-27 10:41:48,621 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,SelfDestructingSolverStorable27 [2021-08-27 10:41:48,622 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:48,622 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2021-08-27 10:41:48,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:48,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964578807] [2021-08-27 10:41:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:48,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:48,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:48,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964578807] [2021-08-27 10:41:48,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964578807] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:48,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912251304] [2021-08-27 10:41:48,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:41:48,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:48,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:48,774 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 10:41:48,775 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 10:41:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:49,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 10:41:49,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:49,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912251304] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:49,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:49,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-08-27 10:41:49,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589759145] [2021-08-27 10:41:49,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 10:41:49,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:49,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 10:41:49,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-08-27 10:41:49,502 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:49,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:49,549 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2021-08-27 10:41:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 10:41:49,549 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-08-27 10:41:49,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:49,550 INFO L225 Difference]: With dead ends: 77 [2021-08-27 10:41:49,550 INFO L226 Difference]: Without dead ends: 76 [2021-08-27 10:41:49,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 205.3ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-08-27 10:41:49,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-08-27 10:41:49,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2021-08-27 10:41:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2021-08-27 10:41:49,552 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2021-08-27 10:41:49,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:49,552 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2021-08-27 10:41:49,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2021-08-27 10:41:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-08-27 10:41:49,553 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:49,553 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2021-08-27 10:41:49,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-08-27 10:41:49,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-27 10:41:49,753 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:49,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:49,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2021-08-27 10:41:49,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:49,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831725618] [2021-08-27 10:41:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:49,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:49,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:49,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831725618] [2021-08-27 10:41:49,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831725618] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:49,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735452895] [2021-08-27 10:41:49,888 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:41:49,889 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:49,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:49,890 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 10:41:49,900 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 10:41:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:50,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 10:41:50,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:50,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735452895] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:50,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:50,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-08-27 10:41:50,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919437213] [2021-08-27 10:41:50,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 10:41:50,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:50,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 10:41:50,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-08-27 10:41:50,607 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 16 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 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 10:41:50,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:50,663 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-08-27 10:41:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 10:41:50,664 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 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 10:41:50,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:50,665 INFO L225 Difference]: With dead ends: 79 [2021-08-27 10:41:50,665 INFO L226 Difference]: Without dead ends: 78 [2021-08-27 10:41:50,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 197.6ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-08-27 10:41:50,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-27 10:41:50,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-08-27 10:41:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2021-08-27 10:41:50,668 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2021-08-27 10:41:50,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:50,668 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2021-08-27 10:41:50,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 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 10:41:50,669 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2021-08-27 10:41:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-08-27 10:41:50,669 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:50,670 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2021-08-27 10:41:50,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-08-27 10:41:50,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:50,882 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:50,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:50,882 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2021-08-27 10:41:50,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:50,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229788535] [2021-08-27 10:41:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:50,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:51,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:51,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229788535] [2021-08-27 10:41:51,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229788535] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:51,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429433382] [2021-08-27 10:41:51,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:41:51,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:51,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:51,042 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 10:41:51,043 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 10:41:51,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:41:51,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:51,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-27 10:41:51,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:51,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429433382] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:51,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:51,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-08-27 10:41:51,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524699504] [2021-08-27 10:41:51,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 10:41:51,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 10:41:51,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-08-27 10:41:51,819 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 17 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:51,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:51,884 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2021-08-27 10:41:51,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-27 10:41:51,884 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-08-27 10:41:51,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:51,885 INFO L225 Difference]: With dead ends: 82 [2021-08-27 10:41:51,885 INFO L226 Difference]: Without dead ends: 81 [2021-08-27 10:41:51,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 218.9ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-08-27 10:41:51,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-08-27 10:41:51,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-08-27 10:41:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 79 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-08-27 10:41:51,890 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2021-08-27 10:41:51,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:51,890 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-08-27 10:41:51,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:51,890 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-08-27 10:41:51,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-27 10:41:51,891 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:51,891 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2021-08-27 10:41:51,919 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 10:41:52,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:52,116 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:52,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:52,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2021-08-27 10:41:52,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:52,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592646683] [2021-08-27 10:41:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:52,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:52,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:52,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592646683] [2021-08-27 10:41:52,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592646683] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:52,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142115580] [2021-08-27 10:41:52,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:41:52,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:52,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:52,285 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 10:41:52,306 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 10:41:52,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:41:52,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:52,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-27 10:41:52,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:53,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142115580] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:53,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:53,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-08-27 10:41:53,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074716057] [2021-08-27 10:41:53,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 10:41:53,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:53,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 10:41:53,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-08-27 10:41:53,184 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand has 17 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:53,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:53,219 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-08-27 10:41:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-27 10:41:53,219 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-27 10:41:53,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:53,220 INFO L225 Difference]: With dead ends: 84 [2021-08-27 10:41:53,220 INFO L226 Difference]: Without dead ends: 83 [2021-08-27 10:41:53,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 230.4ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-08-27 10:41:53,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-08-27 10:41:53,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-08-27 10:41:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 1.025) internal successors, (82), 81 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 10:41:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2021-08-27 10:41:53,223 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2021-08-27 10:41:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:53,223 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2021-08-27 10:41:53,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:53,224 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2021-08-27 10:41:53,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-08-27 10:41:53,224 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:53,224 INFO L512 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2021-08-27 10:41:53,244 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 10:41:53,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:53,433 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:53,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:53,433 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2021-08-27 10:41:53,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:53,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051785862] [2021-08-27 10:41:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:53,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:53,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:53,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051785862] [2021-08-27 10:41:53,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051785862] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:53,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287784130] [2021-08-27 10:41:53,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:41:53,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:53,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:53,612 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 10:41:53,628 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 10:41:54,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-08-27 10:41:54,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:54,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 10:41:54,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:54,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287784130] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:54,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:54,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-08-27 10:41:54,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862601739] [2021-08-27 10:41:54,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 10:41:54,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:54,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 10:41:54,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-08-27 10:41:54,530 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 18 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:54,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:54,602 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2021-08-27 10:41:54,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 10:41:54,603 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-08-27 10:41:54,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:54,603 INFO L225 Difference]: With dead ends: 87 [2021-08-27 10:41:54,603 INFO L226 Difference]: Without dead ends: 86 [2021-08-27 10:41:54,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 252.0ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-08-27 10:41:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-08-27 10:41:54,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2021-08-27 10:41:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2021-08-27 10:41:54,606 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2021-08-27 10:41:54,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:54,607 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2021-08-27 10:41:54,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:54,607 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2021-08-27 10:41:54,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-08-27 10:41:54,607 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:54,607 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2021-08-27 10:41:54,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-08-27 10:41:54,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:54,808 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:54,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:54,809 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2021-08-27 10:41:54,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:54,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567826141] [2021-08-27 10:41:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:54,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:54,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:54,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567826141] [2021-08-27 10:41:54,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567826141] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:54,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146676065] [2021-08-27 10:41:54,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:41:54,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:54,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:54,980 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 10:41:54,981 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 10:41:55,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-08-27 10:41:55,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:55,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 10:41:55,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:55,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146676065] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:55,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:55,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-08-27 10:41:55,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819534203] [2021-08-27 10:41:55,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 10:41:55,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:55,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 10:41:55,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-08-27 10:41:55,841 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:55,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:55,877 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2021-08-27 10:41:55,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 10:41:55,877 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-08-27 10:41:55,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:55,878 INFO L225 Difference]: With dead ends: 89 [2021-08-27 10:41:55,878 INFO L226 Difference]: Without dead ends: 88 [2021-08-27 10:41:55,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 239.3ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-08-27 10:41:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-08-27 10:41:55,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2021-08-27 10:41:55,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:55,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2021-08-27 10:41:55,880 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2021-08-27 10:41:55,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:55,881 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2021-08-27 10:41:55,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:55,881 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2021-08-27 10:41:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-08-27 10:41:55,881 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:55,882 INFO L512 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2021-08-27 10:41:55,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-08-27 10:41:56,085 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,SelfDestructingSolverStorable33 [2021-08-27 10:41:56,085 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:56,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2021-08-27 10:41:56,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:56,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004806708] [2021-08-27 10:41:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:56,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:56,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:56,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004806708] [2021-08-27 10:41:56,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004806708] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:56,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436696688] [2021-08-27 10:41:56,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:41:56,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:56,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:56,277 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 10:41:56,278 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 10:41:56,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:41:56,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:56,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 10:41:56,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:57,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436696688] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:57,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:57,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-08-27 10:41:57,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776765590] [2021-08-27 10:41:57,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-27 10:41:57,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:57,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-27 10:41:57,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-08-27 10:41:57,240 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 19 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:57,307 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2021-08-27 10:41:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 10:41:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-08-27 10:41:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:57,308 INFO L225 Difference]: With dead ends: 92 [2021-08-27 10:41:57,309 INFO L226 Difference]: Without dead ends: 91 [2021-08-27 10:41:57,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 287.7ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-08-27 10:41:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-08-27 10:41:57,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2021-08-27 10:41:57,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2021-08-27 10:41:57,311 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2021-08-27 10:41:57,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:57,311 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2021-08-27 10:41:57,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:57,311 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2021-08-27 10:41:57,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-08-27 10:41:57,312 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:57,312 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2021-08-27 10:41:57,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-08-27 10:41:57,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:57,521 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:57,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:57,521 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2021-08-27 10:41:57,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:57,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407626430] [2021-08-27 10:41:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:57,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:57,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:57,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407626430] [2021-08-27 10:41:57,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407626430] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:57,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482602659] [2021-08-27 10:41:57,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:41:57,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:57,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:57,725 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 10:41:57,726 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 10:41:58,314 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:41:58,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:58,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 10:41:58,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:58,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482602659] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:58,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:58,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-08-27 10:41:58,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341102485] [2021-08-27 10:41:58,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-27 10:41:58,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:58,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-27 10:41:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-08-27 10:41:58,757 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand has 19 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:58,809 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2021-08-27 10:41:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 10:41:58,810 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-08-27 10:41:58,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:58,811 INFO L225 Difference]: With dead ends: 94 [2021-08-27 10:41:58,811 INFO L226 Difference]: Without dead ends: 93 [2021-08-27 10:41:58,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 309.3ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-08-27 10:41:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-27 10:41:58,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2021-08-27 10:41:58,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 91 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-08-27 10:41:58,814 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2021-08-27 10:41:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:58,814 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-08-27 10:41:58,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:58,814 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-08-27 10:41:58,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-27 10:41:58,815 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:58,815 INFO L512 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2021-08-27 10:41:58,838 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 10:41:59,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:59,029 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:59,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:59,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2021-08-27 10:41:59,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:59,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270123223] [2021-08-27 10:41:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:59,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:59,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:59,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270123223] [2021-08-27 10:41:59,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270123223] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:59,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266726527] [2021-08-27 10:41:59,230 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:41:59,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:59,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:59,233 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 10:41:59,234 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 10:41:59,829 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-08-27 10:41:59,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:59,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-27 10:41:59,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:42:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:42:00,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266726527] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:42:00,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:42:00,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-08-27 10:42:00,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490713849] [2021-08-27 10:42:00,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-27 10:42:00,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:42:00,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-27 10:42:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-08-27 10:42:00,252 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 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 10:42:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:42:00,309 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2021-08-27 10:42:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 10:42:00,310 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 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 10:42:00,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:42:00,310 INFO L225 Difference]: With dead ends: 97 [2021-08-27 10:42:00,311 INFO L226 Difference]: Without dead ends: 96 [2021-08-27 10:42:00,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 301.4ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-08-27 10:42:00,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-08-27 10:42:00,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2021-08-27 10:42:00,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:00,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2021-08-27 10:42:00,314 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2021-08-27 10:42:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:42:00,314 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2021-08-27 10:42:00,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 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 10:42:00,315 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2021-08-27 10:42:00,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-08-27 10:42:00,315 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:42:00,315 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2021-08-27 10:42:00,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-08-27 10:42:00,528 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,SelfDestructingSolverStorable36 [2021-08-27 10:42:00,529 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:42:00,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:42:00,529 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2021-08-27 10:42:00,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:42:00,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938805252] [2021-08-27 10:42:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:42:00,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:42:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:42:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:42:00,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:42:00,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938805252] [2021-08-27 10:42:00,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938805252] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:42:00,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662387774] [2021-08-27 10:42:00,733 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:42:00,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:42:00,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:42:00,737 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 10:42:00,760 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 10:42:01,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-08-27 10:42:01,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:42:01,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-27 10:42:01,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:42:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:42:01,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662387774] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:42:01,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:42:01,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-08-27 10:42:01,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032272171] [2021-08-27 10:42:01,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-27 10:42:01,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:42:01,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-27 10:42:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-08-27 10:42:01,827 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:01,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:42:01,886 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2021-08-27 10:42:01,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 10:42:01,886 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-08-27 10:42:01,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:42:01,887 INFO L225 Difference]: With dead ends: 99 [2021-08-27 10:42:01,887 INFO L226 Difference]: Without dead ends: 98 [2021-08-27 10:42:01,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 307.9ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-08-27 10:42:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-27 10:42:01,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2021-08-27 10:42:01,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 96 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2021-08-27 10:42:01,889 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2021-08-27 10:42:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:42:01,890 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2021-08-27 10:42:01,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2021-08-27 10:42:01,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-08-27 10:42:01,891 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:42:01,891 INFO L512 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2021-08-27 10:42:01,915 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 10:42:02,091 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,SelfDestructingSolverStorable37 [2021-08-27 10:42:02,092 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:42:02,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:42:02,092 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2021-08-27 10:42:02,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:42:02,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827322485] [2021-08-27 10:42:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:42:02,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:42:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:42:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:42:02,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:42:02,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827322485] [2021-08-27 10:42:02,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827322485] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:42:02,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125491575] [2021-08-27 10:42:02,320 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:42:02,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:42:02,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:42:02,325 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 10:42:02,326 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 10:42:03,115 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-08-27 10:42:03,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:42:03,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-27 10:42:03,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:42:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:42:03,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125491575] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:42:03,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:42:03,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-08-27 10:42:03,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642519482] [2021-08-27 10:42:03,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-27 10:42:03,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:42:03,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-27 10:42:03,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-08-27 10:42:03,630 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand has 21 states, 20 states have (on average 4.65) internal successors, (93), 20 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 10:42:03,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:42:03,690 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2021-08-27 10:42:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-27 10:42:03,691 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.65) internal successors, (93), 20 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 93 [2021-08-27 10:42:03,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:42:03,691 INFO L225 Difference]: With dead ends: 102 [2021-08-27 10:42:03,691 INFO L226 Difference]: Without dead ends: 101 [2021-08-27 10:42:03,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 362.3ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-08-27 10:42:03,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-08-27 10:42:03,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2021-08-27 10:42:03,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 99 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 10:42:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2021-08-27 10:42:03,693 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2021-08-27 10:42:03,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:42:03,693 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2021-08-27 10:42:03,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.65) internal successors, (93), 20 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 10:42:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2021-08-27 10:42:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-08-27 10:42:03,694 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:42:03,694 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2021-08-27 10:42:03,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-08-27 10:42:03,894 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,SelfDestructingSolverStorable38 [2021-08-27 10:42:03,895 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:42:03,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:42:03,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2021-08-27 10:42:03,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:42:03,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833418526] [2021-08-27 10:42:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:42:03,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:42:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:42:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:42:04,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:42:04,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833418526] [2021-08-27 10:42:04,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833418526] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:42:04,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068582146] [2021-08-27 10:42:04,123 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:42:04,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:42:04,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:42:04,126 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 10:42:04,127 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 10:42:04,839 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-08-27 10:42:04,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:42:04,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-27 10:42:04,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:42:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:42:05,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068582146] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:42:05,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:42:05,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-08-27 10:42:05,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659803225] [2021-08-27 10:42:05,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-27 10:42:05,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:42:05,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-27 10:42:05,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-08-27 10:42:05,332 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand has 21 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:05,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:42:05,382 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2021-08-27 10:42:05,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-27 10:42:05,383 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-08-27 10:42:05,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:42:05,384 INFO L225 Difference]: With dead ends: 104 [2021-08-27 10:42:05,384 INFO L226 Difference]: Without dead ends: 103 [2021-08-27 10:42:05,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 352.3ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-08-27 10:42:05,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-27 10:42:05,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-08-27 10:42:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2021-08-27 10:42:05,387 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2021-08-27 10:42:05,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:42:05,387 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2021-08-27 10:42:05,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2021-08-27 10:42:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-08-27 10:42:05,388 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:42:05,388 INFO L512 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2021-08-27 10:42:05,419 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 10:42:05,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-08-27 10:42:05,613 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:42:05,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:42:05,613 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2021-08-27 10:42:05,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:42:05,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296602780] [2021-08-27 10:42:05,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:42:05,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:42:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:42:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:42:05,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:42:05,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296602780] [2021-08-27 10:42:05,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296602780] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:42:05,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891915428] [2021-08-27 10:42:05,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:42:05,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:42:05,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:42:05,854 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 10:42:05,855 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 10:42:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:42:06,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-27 10:42:06,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:42:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:42:07,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891915428] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:42:07,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:42:07,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-08-27 10:42:07,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607734012] [2021-08-27 10:42:07,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 10:42:07,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:42:07,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 10:42:07,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-08-27 10:42:07,047 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:07,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:42:07,124 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2021-08-27 10:42:07,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-27 10:42:07,125 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-08-27 10:42:07,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:42:07,126 INFO L225 Difference]: With dead ends: 107 [2021-08-27 10:42:07,126 INFO L226 Difference]: Without dead ends: 106 [2021-08-27 10:42:07,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 377.4ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-08-27 10:42:07,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-08-27 10:42:07,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2021-08-27 10:42:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 104 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2021-08-27 10:42:07,129 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2021-08-27 10:42:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:42:07,129 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2021-08-27 10:42:07,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2021-08-27 10:42:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-08-27 10:42:07,130 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:42:07,130 INFO L512 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2021-08-27 10:42:07,163 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 10:42:07,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:42:07,345 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:42:07,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:42:07,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2021-08-27 10:42:07,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:42:07,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323415967] [2021-08-27 10:42:07,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:42:07,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:42:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 10:42:07,362 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 10:42:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 10:42:07,389 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 10:42:07,390 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 10:42:07,390 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:42:07,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:42:07,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:42:07,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:42:07,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-27 10:42:07,399 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:42:07,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:42:07 BoogieIcfgContainer [2021-08-27 10:42:07,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:42:07,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:42:07,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:42:07,436 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:42:07,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:41:31" (3/4) ... [2021-08-27 10:42:07,438 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 10:42:07,487 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:42:07,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:42:07,489 INFO L168 Benchmark]: Toolchain (without parser) took 36187.02 ms. Allocated memory was 54.5 MB in the beginning and 302.0 MB in the end (delta: 247.5 MB). Free memory was 31.7 MB in the beginning and 181.4 MB in the end (delta: -149.7 MB). Peak memory consumption was 96.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:07,489 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.3 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:42:07,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.81 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 36.3 MB in the end (delta: -4.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:07,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.76 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 35.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:07,490 INFO L168 Benchmark]: Boogie Preprocessor took 19.08 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 35.1 MB in the beginning and 51.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:07,491 INFO L168 Benchmark]: RCFGBuilder took 267.11 ms. Allocated memory is still 67.1 MB. Free memory was 51.1 MB in the beginning and 42.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:07,494 INFO L168 Benchmark]: TraceAbstraction took 35661.76 ms. Allocated memory was 67.1 MB in the beginning and 302.0 MB in the end (delta: 234.9 MB). Free memory was 41.5 MB in the beginning and 184.5 MB in the end (delta: -143.0 MB). Peak memory consumption was 95.0 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:07,495 INFO L168 Benchmark]: Witness Printer took 51.87 ms. Allocated memory is still 302.0 MB. Free memory was 184.5 MB in the beginning and 181.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:07,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.3 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 148.81 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 36.3 MB in the end (delta: -4.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.76 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 35.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.08 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 35.1 MB in the beginning and 51.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 267.11 ms. Allocated memory is still 67.1 MB. Free memory was 51.1 MB in the beginning and 42.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 35661.76 ms. Allocated memory was 67.1 MB in the beginning and 302.0 MB in the end (delta: 234.9 MB). Free memory was 41.5 MB in the beginning and 184.5 MB in the end (delta: -143.0 MB). Peak memory consumption was 95.0 MB. Max. memory is 16.1 GB. * Witness Printer took 51.87 ms. Allocated memory is still 302.0 MB. Free memory was 184.5 MB in the beginning and 181.4 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 - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] 3*y - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 35569.5ms, OverallIterations: 42, TraceHistogramMax: 20, EmptinessCheckTime: 29.2ms, AutomataDifference: 1852.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 228 SDtfs, 413 SDslu, 1100 SDs, 0 SdLazy, 1227 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1039.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 5670.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=41, InterpolantAutomatonStates: 484, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 168.7ms AutomataMinimizationTime, 41 MinimizatonAttempts, 39 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 125.5ms SsaConstructionTime, 756.7ms SatisfiabilityAnalysisTime, 13748.3ms InterpolantComputationTime, 4022 NumberOfCodeBlocks, 4022 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 3844 ConstructedInterpolants, 0 QuantifiedInterpolants, 11532 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3617 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 78 InterpolantComputations, 4 PerfectInterpolantSequences, 0/23218 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 RESULT: Ultimate proved your program to be incorrect! [2021-08-27 10:42:07,533 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...