./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.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 500cb8735f650eb0e7c33062ddc23c2166b17f19 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 10:53:14,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:53:14,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:53:14,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:53:14,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:53:14,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:53:14,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:53:14,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:53:14,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:53:14,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:53:14,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:53:14,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:53:14,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:53:14,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:53:14,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:53:14,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:53:14,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:53:14,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:53:14,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:53:14,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:53:14,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:53:14,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:53:14,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:53:14,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:53:14,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:53:14,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:53:14,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:53:14,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:53:14,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:53:14,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:53:14,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:53:14,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:53:14,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:53:14,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:53:14,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:53:14,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:53:14,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:53:14,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:53:14,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:53:14,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:53:14,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:53:14,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:53:14,522 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:53:14,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:53:14,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:53:14,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:53:14,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:53:14,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:53:14,525 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:53:14,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:53:14,525 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:53:14,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:53:14,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:53:14,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:53:14,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:53:14,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:53:14,526 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:53:14,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:53:14,527 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:53:14,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:53:14,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:53:14,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:53:14,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:53:14,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:53:14,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:53:14,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:53:14,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:53:14,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:53:14,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:53:14,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:53:14,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:53:14,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 500cb8735f650eb0e7c33062ddc23c2166b17f19 [2021-08-27 10:53:14,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:53:14,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:53:14,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:53:14,794 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:53:14,795 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:53:14,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2021-08-27 10:53:14,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5de596d1/08b8dc79c56744a29d8b4969acf0af98/FLAG0e2548a9a [2021-08-27 10:53:15,168 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:53:15,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2021-08-27 10:53:15,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5de596d1/08b8dc79c56744a29d8b4969acf0af98/FLAG0e2548a9a [2021-08-27 10:53:15,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5de596d1/08b8dc79c56744a29d8b4969acf0af98 [2021-08-27 10:53:15,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:53:15,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:53:15,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:53:15,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:53:15,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:53:15,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:53:15" (1/1) ... [2021-08-27 10:53:15,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4062234b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15, skipping insertion in model container [2021-08-27 10:53:15,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:53:15" (1/1) ... [2021-08-27 10:53:15,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:53:15,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:53:15,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:53:15,304 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:53:15,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:53:15,321 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:53:15,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15 WrapperNode [2021-08-27 10:53:15,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:53:15,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:53:15,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:53:15,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:53:15,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15" (1/1) ... [2021-08-27 10:53:15,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15" (1/1) ... [2021-08-27 10:53:15,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:53:15,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:53:15,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:53:15,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:53:15,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15" (1/1) ... [2021-08-27 10:53:15,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15" (1/1) ... [2021-08-27 10:53:15,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15" (1/1) ... [2021-08-27 10:53:15,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15" (1/1) ... [2021-08-27 10:53:15,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15" (1/1) ... [2021-08-27 10:53:15,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15" (1/1) ... [2021-08-27 10:53:15,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15" (1/1) ... [2021-08-27 10:53:15,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:53:15,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:53:15,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:53:15,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:53:15,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15" (1/1) ... [2021-08-27 10:53:15,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:53:15,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:15,410 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 10:53:15,436 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 10:53:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:53:15,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:53:15,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:53:15,615 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 10:53:15,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:53:15 BoogieIcfgContainer [2021-08-27 10:53:15,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:53:15,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:53:15,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:53:15,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:53:15,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:53:15" (1/3) ... [2021-08-27 10:53:15,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e4070b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:53:15, skipping insertion in model container [2021-08-27 10:53:15,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:15" (2/3) ... [2021-08-27 10:53:15,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e4070b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:53:15, skipping insertion in model container [2021-08-27 10:53:15,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:53:15" (3/3) ... [2021-08-27 10:53:15,622 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2021-08-27 10:53:15,625 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:53:15,625 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-27 10:53:15,661 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:53:15,667 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 10:53:15,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-27 10:53:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:15,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:53:15,683 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:15,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:53:15,684 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 10:53:15,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:15,689 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2021-08-27 10:53:15,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:15,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934952767] [2021-08-27 10:53:15,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:15,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:15,843 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 10:53:15,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:15,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934952767] [2021-08-27 10:53:15,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934952767] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:15,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:15,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:53:15,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954771582] [2021-08-27 10:53:15,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:53:15,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:15,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:53:15,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:15,870 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:15,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:15,902 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-08-27 10:53:15,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:53:15,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-27 10:53:15,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:15,909 INFO L225 Difference]: With dead ends: 29 [2021-08-27 10:53:15,909 INFO L226 Difference]: Without dead ends: 16 [2021-08-27 10:53:15,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:15,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-27 10:53:15,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-08-27 10:53:15,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 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 10:53:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-08-27 10:53:15,931 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2021-08-27 10:53:15,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:15,932 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-08-27 10:53:15,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:15,932 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-08-27 10:53:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:53:15,933 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:15,933 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:53:15,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:53:15,934 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:15,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:15,936 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2021-08-27 10:53:15,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:15,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736869069] [2021-08-27 10:53:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:15,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:15,981 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 10:53:15,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:15,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736869069] [2021-08-27 10:53:15,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736869069] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:15,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:15,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 10:53:15,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988684884] [2021-08-27 10:53:15,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:53:15,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:15,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:53:15,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:15,985 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:16,011 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-08-27 10:53:16,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:53:16,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-27 10:53:16,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:16,013 INFO L225 Difference]: With dead ends: 30 [2021-08-27 10:53:16,013 INFO L226 Difference]: Without dead ends: 17 [2021-08-27 10:53:16,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:16,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-27 10:53:16,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-27 10:53:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-08-27 10:53:16,019 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 5 [2021-08-27 10:53:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:16,019 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-08-27 10:53:16,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-08-27 10:53:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 10:53:16,021 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:16,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 10:53:16,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:53:16,022 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:16,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2021-08-27 10:53:16,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:16,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176245661] [2021-08-27 10:53:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:16,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:16,062 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 10:53:16,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:16,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176245661] [2021-08-27 10:53:16,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176245661] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:16,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:16,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:53:16,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460530140] [2021-08-27 10:53:16,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:53:16,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:16,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:53:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:16,068 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:16,084 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-08-27 10:53:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:53:16,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-27 10:53:16,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:16,086 INFO L225 Difference]: With dead ends: 17 [2021-08-27 10:53:16,086 INFO L226 Difference]: Without dead ends: 16 [2021-08-27 10:53:16,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-27 10:53:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-27 10:53:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 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 10:53:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-08-27 10:53:16,095 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2021-08-27 10:53:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:16,095 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-08-27 10:53:16,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-08-27 10:53:16,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 10:53:16,096 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:16,096 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-08-27 10:53:16,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 10:53:16,097 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:16,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:16,098 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2021-08-27 10:53:16,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:16,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119764949] [2021-08-27 10:53:16,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:16,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:16,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:16,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119764949] [2021-08-27 10:53:16,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119764949] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:16,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848370808] [2021-08-27 10:53:16,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:16,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:16,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:16,148 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 10:53:16,149 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 10:53:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:16,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 10:53:16,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:16,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848370808] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:16,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:53:16,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-27 10:53:16,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380839903] [2021-08-27 10:53:16,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:53:16,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:16,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:53:16,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:53:16,260 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:16,285 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-08-27 10:53:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:53:16,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-27 10:53:16,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:16,286 INFO L225 Difference]: With dead ends: 22 [2021-08-27 10:53:16,287 INFO L226 Difference]: Without dead ends: 21 [2021-08-27 10:53:16,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:53:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-27 10:53:16,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-08-27 10:53:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-08-27 10:53:16,290 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2021-08-27 10:53:16,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:16,290 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-08-27 10:53:16,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-08-27 10:53:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 10:53:16,291 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:16,293 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:53:16,313 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 10:53:16,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:16,501 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:16,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:16,501 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2021-08-27 10:53:16,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:16,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706906693] [2021-08-27 10:53:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:16,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 10:53:16,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:16,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706906693] [2021-08-27 10:53:16,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706906693] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:16,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:16,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:53:16,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864495942] [2021-08-27 10:53:16,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:53:16,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:16,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:53:16,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:16,526 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:16,537 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-08-27 10:53:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:53:16,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-27 10:53:16,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:16,538 INFO L225 Difference]: With dead ends: 33 [2021-08-27 10:53:16,538 INFO L226 Difference]: Without dead ends: 32 [2021-08-27 10:53:16,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:16,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-27 10:53:16,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-08-27 10:53:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-08-27 10:53:16,557 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 9 [2021-08-27 10:53:16,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:16,558 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-08-27 10:53:16,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-08-27 10:53:16,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 10:53:16,559 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:16,559 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:53:16,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 10:53:16,559 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:16,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:16,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1897256205, now seen corresponding path program 1 times [2021-08-27 10:53:16,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:16,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143359271] [2021-08-27 10:53:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:16,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 10:53:16,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:16,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143359271] [2021-08-27 10:53:16,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143359271] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:16,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:16,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:53:16,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429571286] [2021-08-27 10:53:16,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:53:16,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:53:16,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:16,587 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:16,593 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-08-27 10:53:16,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:53:16,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-27 10:53:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:16,595 INFO L225 Difference]: With dead ends: 30 [2021-08-27 10:53:16,595 INFO L226 Difference]: Without dead ends: 29 [2021-08-27 10:53:16,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:16,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-27 10:53:16,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-27 10:53:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 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 10:53:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-08-27 10:53:16,598 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 10 [2021-08-27 10:53:16,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:16,598 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-08-27 10:53:16,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,598 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-08-27 10:53:16,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 10:53:16,599 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:16,599 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2021-08-27 10:53:16,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 10:53:16,599 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 10:53:16,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:16,599 INFO L82 PathProgramCache]: Analyzing trace with hash 432560224, now seen corresponding path program 2 times [2021-08-27 10:53:16,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:16,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113744520] [2021-08-27 10:53:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:16,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-27 10:53:16,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:16,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113744520] [2021-08-27 10:53:16,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113744520] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:16,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539912749] [2021-08-27 10:53:16,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:53:16,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:16,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:16,637 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 10:53:16,643 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 10:53:16,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 10:53:16,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:53:16,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:53:16,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-27 10:53:16,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539912749] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:16,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:53:16,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-27 10:53:16,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891868714] [2021-08-27 10:53:16,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 10:53:16,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:16,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 10:53:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:53:16,747 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:16,780 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-08-27 10:53:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 10:53:16,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-27 10:53:16,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:16,782 INFO L225 Difference]: With dead ends: 29 [2021-08-27 10:53:16,782 INFO L226 Difference]: Without dead ends: 28 [2021-08-27 10:53:16,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:53:16,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-27 10:53:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2021-08-27 10:53:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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 10:53:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-08-27 10:53:16,784 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2021-08-27 10:53:16,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:16,784 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-08-27 10:53:16,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-08-27 10:53:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 10:53:16,785 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:16,785 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:53:16,819 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 10:53:16,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-08-27 10:53:16,988 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 10:53:16,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:16,988 INFO L82 PathProgramCache]: Analyzing trace with hash 610055194, now seen corresponding path program 1 times [2021-08-27 10:53:16,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:16,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542512562] [2021-08-27 10:53:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:16,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 10:53:17,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:17,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542512562] [2021-08-27 10:53:17,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542512562] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:17,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113324591] [2021-08-27 10:53:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:17,018 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:17,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:17,021 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 10:53:17,021 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 10:53:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:17,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 10:53:17,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 10:53:17,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113324591] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:17,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:53:17,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-08-27 10:53:17,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029912361] [2021-08-27 10:53:17,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 10:53:17,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:17,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 10:53:17,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:53:17,105 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 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 10:53:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:17,166 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-08-27 10:53:17,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 10:53:17,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 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 13 [2021-08-27 10:53:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:17,166 INFO L225 Difference]: With dead ends: 34 [2021-08-27 10:53:17,166 INFO L226 Difference]: Without dead ends: 27 [2021-08-27 10:53:17,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:53:17,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-27 10:53:17,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-08-27 10:53:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-08-27 10:53:17,170 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2021-08-27 10:53:17,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:17,170 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-08-27 10:53:17,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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 10:53:17,170 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-08-27 10:53:17,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-27 10:53:17,171 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:17,171 INFO L512 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-08-27 10:53:17,190 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 10:53:17,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:17,388 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:17,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:17,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1201123269, now seen corresponding path program 2 times [2021-08-27 10:53:17,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:17,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334711474] [2021-08-27 10:53:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:17,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-27 10:53:17,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:17,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334711474] [2021-08-27 10:53:17,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334711474] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:17,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622192902] [2021-08-27 10:53:17,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:53:17,416 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:17,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:17,417 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 10:53:17,425 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 10:53:17,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 10:53:17,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:53:17,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 10:53:17,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-08-27 10:53:17,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622192902] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:17,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:53:17,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-08-27 10:53:17,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033542978] [2021-08-27 10:53:17,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:53:17,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:17,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:53:17,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:53:17,585 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:17,600 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-08-27 10:53:17,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:53:17,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-27 10:53:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:17,603 INFO L225 Difference]: With dead ends: 26 [2021-08-27 10:53:17,603 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 10:53:17,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:53:17,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 10:53:17,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 10:53:17,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 10:53:17,603 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-08-27 10:53:17,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:17,604 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 10:53:17,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 10:53:17,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 10:53:17,606 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:17,606 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:17,606 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:17,606 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:17,623 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 10:53:17,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:17,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 10:53:17,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:53:17,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:53:17,900 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-08-27 10:53:17,900 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 10:53:17,900 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-08-27 10:53:17,900 INFO L860 garLoopResultBuilder]: At program point L29(lines 13 30) the Hoare annotation is: true [2021-08-27 10:53:17,900 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-08-27 10:53:17,900 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-08-27 10:53:17,901 INFO L857 garLoopResultBuilder]: For program point L21(lines 21 26) no Hoare annotation was computed. [2021-08-27 10:53:17,901 INFO L853 garLoopResultBuilder]: At program point L21-2(lines 20 27) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse2 (<= 0 ULTIMATE.start_main_~j~0)) (.cse3 (<= ULTIMATE.start_main_~m~0 2147483646))) (or (and .cse0 .cse1 (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~m~0) .cse2 .cse3) (and (<= ULTIMATE.start_main_~i~0 2147483646) .cse0 .cse1 (<= 1 ULTIMATE.start_main_~m~0) .cse2 .cse3))) [2021-08-27 10:53:17,901 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 28) no Hoare annotation was computed. [2021-08-27 10:53:17,901 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 28) no Hoare annotation was computed. [2021-08-27 10:53:17,901 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-08-27 10:53:17,901 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-08-27 10:53:17,901 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 10:53:17,901 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 10:53:17,901 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-08-27 10:53:17,901 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-08-27 10:53:17,904 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:53:17,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:53:17 BoogieIcfgContainer [2021-08-27 10:53:17,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:53:17,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:53:17,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:53:17,913 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:53:17,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:53:15" (3/4) ... [2021-08-27 10:53:17,916 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 10:53:17,921 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-27 10:53:17,921 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 10:53:17,939 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:53:17,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:53:17,940 INFO L168 Benchmark]: Toolchain (without parser) took 2745.86 ms. Allocated memory was 62.9 MB in the beginning and 96.5 MB in the end (delta: 33.6 MB). Free memory was 42.9 MB in the beginning and 57.5 MB in the end (delta: -14.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:17,940 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 62.9 MB. Free memory was 44.0 MB in the beginning and 44.0 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:53:17,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.32 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 34.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:17,941 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.15 ms. Allocated memory is still 62.9 MB. Free memory was 34.2 MB in the beginning and 46.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:17,941 INFO L168 Benchmark]: Boogie Preprocessor took 30.88 ms. Allocated memory is still 62.9 MB. Free memory was 46.3 MB in the beginning and 45.4 MB in the end (delta: 863.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:17,941 INFO L168 Benchmark]: RCFGBuilder took 234.86 ms. Allocated memory is still 62.9 MB. Free memory was 45.4 MB in the beginning and 35.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:17,941 INFO L168 Benchmark]: TraceAbstraction took 2295.76 ms. Allocated memory was 62.9 MB in the beginning and 96.5 MB in the end (delta: 33.6 MB). Free memory was 34.9 MB in the beginning and 60.0 MB in the end (delta: -25.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:17,942 INFO L168 Benchmark]: Witness Printer took 25.97 ms. Allocated memory is still 96.5 MB. Free memory was 60.0 MB in the beginning and 57.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:17,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 62.9 MB. Free memory was 44.0 MB in the beginning and 44.0 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 126.32 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 34.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.15 ms. Allocated memory is still 62.9 MB. Free memory was 34.2 MB in the beginning and 46.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.88 ms. Allocated memory is still 62.9 MB. Free memory was 46.3 MB in the beginning and 45.4 MB in the end (delta: 863.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 234.86 ms. Allocated memory is still 62.9 MB. Free memory was 45.4 MB in the beginning and 35.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2295.76 ms. Allocated memory was 62.9 MB in the beginning and 96.5 MB in the end (delta: 33.6 MB). Free memory was 34.9 MB in the beginning and 60.0 MB in the end (delta: -25.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Witness Printer took 25.97 ms. Allocated memory is still 96.5 MB. Free memory was 60.0 MB in the beginning and 57.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2243.8ms, OverallIterations: 9, TraceHistogramMax: 6, EmptinessCheckTime: 10.6ms, AutomataDifference: 281.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 76.2ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 66 SDtfs, 73 SDslu, 18 SDs, 0 SdLazy, 97 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 164.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 51.3ms AutomataMinimizationTime, 9 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 39 HoareAnnotationTreeSize, 2 FomulaSimplifications, 288 FormulaSimplificationTreeSizeReduction, 32.2ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 39.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 20.3ms SsaConstructionTime, 73.7ms SatisfiabilityAnalysisTime, 606.1ms InterpolantComputationTime, 155 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 416 SizeOfPredicates, 3 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 79/124 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((0 <= i && n <= 2147483647) && j + 1 <= m) && 0 <= j) && m <= 2147483646) || (((((i <= 2147483646 && 0 <= i) && n <= 2147483647) && 1 <= m) && 0 <= j) && m <= 2147483646) RESULT: Ultimate proved your program to be correct! [2021-08-27 10:53:17,967 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...