./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.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/LeeJonesBen-Amram-POPL2001-Ex4.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 554582d6fc3de8e87f5dd30e5019302b6e1b96be ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 10:55:59,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:55:59,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:55:59,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:55:59,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:55:59,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:55:59,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:55:59,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:55:59,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:55:59,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:55:59,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:55:59,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:55:59,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:55:59,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:55:59,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:55:59,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:55:59,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:55:59,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:55:59,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:55:59,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:55:59,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:55:59,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:55:59,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:55:59,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:55:59,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:55:59,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:55:59,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:55:59,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:55:59,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:55:59,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:55:59,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:55:59,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:55:59,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:55:59,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:55:59,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:55:59,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:55:59,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:55:59,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:55:59,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:55:59,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:55:59,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:55:59,392 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:55:59,427 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:55:59,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:55:59,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:55:59,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:55:59,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:55:59,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:55:59,430 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:55:59,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:55:59,431 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:55:59,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:55:59,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:55:59,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:55:59,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:55:59,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:55:59,432 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:55:59,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:55:59,433 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:55:59,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:55:59,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:55:59,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:55:59,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:55:59,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:55:59,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:55:59,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:55:59,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:55:59,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:55:59,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:55:59,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:55:59,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:55:59,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2021-08-27 10:55:59,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:55:59,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:55:59,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:55:59,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:55:59,802 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:55:59,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2021-08-27 10:55:59,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56c176868/f985eac267384671823caffa4a1175b9/FLAG60f41bdb2 [2021-08-27 10:56:00,268 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:56:00,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2021-08-27 10:56:00,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56c176868/f985eac267384671823caffa4a1175b9/FLAG60f41bdb2 [2021-08-27 10:56:00,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56c176868/f985eac267384671823caffa4a1175b9 [2021-08-27 10:56:00,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:56:00,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:56:00,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:56:00,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:56:00,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:56:00,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:56:00" (1/1) ... [2021-08-27 10:56:00,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be1e885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00, skipping insertion in model container [2021-08-27 10:56:00,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:56:00" (1/1) ... [2021-08-27 10:56:00,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:56:00,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:56:00,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:56:00,855 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:56:00,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:56:00,877 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:56:00,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00 WrapperNode [2021-08-27 10:56:00,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:56:00,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:56:00,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:56:00,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:56:00,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00" (1/1) ... [2021-08-27 10:56:00,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00" (1/1) ... [2021-08-27 10:56:00,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:56:00,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:56:00,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:56:00,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:56:00,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00" (1/1) ... [2021-08-27 10:56:00,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00" (1/1) ... [2021-08-27 10:56:00,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00" (1/1) ... [2021-08-27 10:56:00,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00" (1/1) ... [2021-08-27 10:56:00,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00" (1/1) ... [2021-08-27 10:56:00,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00" (1/1) ... [2021-08-27 10:56:00,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00" (1/1) ... [2021-08-27 10:56:00,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:56:00,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:56:00,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:56:00,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:56:00,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00" (1/1) ... [2021-08-27 10:56:00,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:56:00,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:00,982 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 10:56:01,012 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 10:56:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure p [2021-08-27 10:56:01,029 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2021-08-27 10:56:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:56:01,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:56:01,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:56:01,264 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 10:56:01,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:01 BoogieIcfgContainer [2021-08-27 10:56:01,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:56:01,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:56:01,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:56:01,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:56:01,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:56:00" (1/3) ... [2021-08-27 10:56:01,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6944fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:56:01, skipping insertion in model container [2021-08-27 10:56:01,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:00" (2/3) ... [2021-08-27 10:56:01,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6944fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:56:01, skipping insertion in model container [2021-08-27 10:56:01,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:01" (3/3) ... [2021-08-27 10:56:01,272 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2021-08-27 10:56:01,282 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:56:01,282 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-27 10:56:01,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:56:01,344 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 10:56:01,345 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-27 10:56:01,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 10:56:01,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 10:56:01,359 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:01,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 10:56:01,360 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:56:01,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:01,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1571177437, now seen corresponding path program 1 times [2021-08-27 10:56:01,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:01,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144334830] [2021-08-27 10:56:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:01,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:01,565 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 10:56:01,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:01,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144334830] [2021-08-27 10:56:01,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144334830] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:01,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:56:01,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 10:56:01,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059764952] [2021-08-27 10:56:01,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 10:56:01,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:01,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 10:56:01,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:56:01,585 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:01,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:01,705 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2021-08-27 10:56:01,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:56:01,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 10:56:01,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:01,712 INFO L225 Difference]: With dead ends: 44 [2021-08-27 10:56:01,712 INFO L226 Difference]: Without dead ends: 28 [2021-08-27 10:56:01,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:56:01,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-27 10:56:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2021-08-27 10:56:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.5) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-08-27 10:56:01,739 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2021-08-27 10:56:01,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:01,740 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-08-27 10:56:01,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:01,740 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-08-27 10:56:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 10:56:01,741 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:01,741 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:56:01,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:56:01,742 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:56:01,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:01,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1461860328, now seen corresponding path program 1 times [2021-08-27 10:56:01,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:01,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720802606] [2021-08-27 10:56:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:01,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:01,776 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 10:56:01,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:01,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720802606] [2021-08-27 10:56:01,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720802606] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:01,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:56:01,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:56:01,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853700790] [2021-08-27 10:56:01,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:56:01,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:01,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:56:01,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:01,780 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:01,792 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-08-27 10:56:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:56:01,793 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-27 10:56:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:01,794 INFO L225 Difference]: With dead ends: 19 [2021-08-27 10:56:01,794 INFO L226 Difference]: Without dead ends: 18 [2021-08-27 10:56:01,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-27 10:56:01,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-08-27 10:56:01,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:01,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-08-27 10:56:01,798 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7 [2021-08-27 10:56:01,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:01,798 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-08-27 10:56:01,799 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:01,799 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-08-27 10:56:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 10:56:01,799 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:01,799 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:56:01,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:56:01,800 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:56:01,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:01,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1461867311, now seen corresponding path program 1 times [2021-08-27 10:56:01,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:01,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081982341] [2021-08-27 10:56:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:01,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:01,852 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 10:56:01,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:01,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081982341] [2021-08-27 10:56:01,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081982341] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:01,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:56:01,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 10:56:01,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524659320] [2021-08-27 10:56:01,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 10:56:01,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:01,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 10:56:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:56:01,856 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:01,912 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-08-27 10:56:01,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:56:01,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-27 10:56:01,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:01,914 INFO L225 Difference]: With dead ends: 30 [2021-08-27 10:56:01,914 INFO L226 Difference]: Without dead ends: 29 [2021-08-27 10:56:01,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:56:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-27 10:56:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-08-27 10:56:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-08-27 10:56:01,919 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2021-08-27 10:56:01,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:01,919 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-08-27 10:56:01,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-08-27 10:56:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 10:56:01,920 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:01,920 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:56:01,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 10:56:01,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:56:01,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:01,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1926753568, now seen corresponding path program 1 times [2021-08-27 10:56:01,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:01,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056610278] [2021-08-27 10:56:01,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:01,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:01,946 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 10:56:01,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:01,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056610278] [2021-08-27 10:56:01,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056610278] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:01,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:56:01,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:56:01,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443535483] [2021-08-27 10:56:01,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:56:01,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:01,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:56:01,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:01,949 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:01,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:01,959 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-08-27 10:56:01,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:56:01,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-27 10:56:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:01,960 INFO L225 Difference]: With dead ends: 24 [2021-08-27 10:56:01,961 INFO L226 Difference]: Without dead ends: 23 [2021-08-27 10:56:01,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:01,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-27 10:56:01,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-27 10:56:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-08-27 10:56:01,965 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2021-08-27 10:56:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:01,966 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-08-27 10:56:01,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:01,966 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-08-27 10:56:01,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 10:56:01,966 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:01,967 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:56:01,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 10:56:01,967 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:56:01,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:01,968 INFO L82 PathProgramCache]: Analyzing trace with hash 168982822, now seen corresponding path program 1 times [2021-08-27 10:56:01,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:01,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759863379] [2021-08-27 10:56:01,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:01,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:02,069 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 10:56:02,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:02,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759863379] [2021-08-27 10:56:02,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759863379] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:02,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49961601] [2021-08-27 10:56:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:02,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:02,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:02,084 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 10:56:02,111 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 10:56:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:02,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 10:56:02,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:02,335 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 10:56:02,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49961601] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:02,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:02,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-27 10:56:02,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037503804] [2021-08-27 10:56:02,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 10:56:02,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:02,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 10:56:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:56:02,338 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:02,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:02,495 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-08-27 10:56:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 10:56:02,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-27 10:56:02,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:02,496 INFO L225 Difference]: With dead ends: 45 [2021-08-27 10:56:02,496 INFO L226 Difference]: Without dead ends: 43 [2021-08-27 10:56:02,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:56:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-27 10:56:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2021-08-27 10:56:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 26 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-08-27 10:56:02,507 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2021-08-27 10:56:02,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:02,507 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-08-27 10:56:02,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-08-27 10:56:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 10:56:02,508 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:02,508 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:56:02,534 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 10:56:02,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:02,729 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:56:02,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:02,730 INFO L82 PathProgramCache]: Analyzing trace with hash 943507206, now seen corresponding path program 1 times [2021-08-27 10:56:02,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:02,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44115371] [2021-08-27 10:56:02,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:02,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:02,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:02,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44115371] [2021-08-27 10:56:02,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44115371] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:02,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560546678] [2021-08-27 10:56:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:02,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:02,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:02,816 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 10:56:02,846 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 10:56:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:02,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 10:56:02,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:02,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560546678] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:02,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:02,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-27 10:56:02,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081853331] [2021-08-27 10:56:02,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 10:56:02,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:02,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 10:56:02,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:56:02,972 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:03,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:03,111 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2021-08-27 10:56:03,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 10:56:03,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-27 10:56:03,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:03,112 INFO L225 Difference]: With dead ends: 67 [2021-08-27 10:56:03,112 INFO L226 Difference]: Without dead ends: 65 [2021-08-27 10:56:03,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 73.5ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:56:03,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-08-27 10:56:03,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 33. [2021-08-27 10:56:03,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 4 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-08-27 10:56:03,118 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2021-08-27 10:56:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:03,119 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-08-27 10:56:03,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-08-27 10:56:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 10:56:03,120 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:03,120 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:56:03,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-27 10:56:03,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-27 10:56:03,325 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:56:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:03,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1019019044, now seen corresponding path program 1 times [2021-08-27 10:56:03,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:03,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947717945] [2021-08-27 10:56:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:03,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:03,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:03,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947717945] [2021-08-27 10:56:03,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947717945] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:03,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607982136] [2021-08-27 10:56:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:03,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:03,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:03,398 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 10:56:03,399 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 10:56:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:03,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 10:56:03,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:03,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607982136] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:03,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:03,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-27 10:56:03,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810567903] [2021-08-27 10:56:03,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 10:56:03,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:03,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 10:56:03,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:56:03,499 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:03,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:03,573 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-08-27 10:56:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 10:56:03,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-27 10:56:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:03,574 INFO L225 Difference]: With dead ends: 53 [2021-08-27 10:56:03,574 INFO L226 Difference]: Without dead ends: 52 [2021-08-27 10:56:03,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 67.2ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:56:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-27 10:56:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2021-08-27 10:56:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.3) internal successors, (39), 32 states have internal predecessors, (39), 7 states have call successors, (7), 6 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-08-27 10:56:03,580 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 12 [2021-08-27 10:56:03,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:03,581 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-08-27 10:56:03,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-08-27 10:56:03,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 10:56:03,581 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:03,582 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:56:03,613 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 10:56:03,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:03,805 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:56:03,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:03,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1112438587, now seen corresponding path program 1 times [2021-08-27 10:56:03,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:03,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015075616] [2021-08-27 10:56:03,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:03,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:03,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:03,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015075616] [2021-08-27 10:56:03,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015075616] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:03,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096903037] [2021-08-27 10:56:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:03,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:03,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:03,925 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 10:56:03,926 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 10:56:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:03,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 10:56:03,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:04,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096903037] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:04,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:04,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-08-27 10:56:04,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684607001] [2021-08-27 10:56:04,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 10:56:04,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 10:56:04,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-27 10:56:04,081 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:04,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:04,273 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2021-08-27 10:56:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 10:56:04,274 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-27 10:56:04,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:04,274 INFO L225 Difference]: With dead ends: 47 [2021-08-27 10:56:04,274 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 10:56:04,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 145.8ms TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-08-27 10:56:04,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 10:56:04,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 10:56:04,275 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 10:56:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 10:56:04,276 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-08-27 10:56:04,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:04,276 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 10:56:04,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:04,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 10:56:04,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 10:56:04,279 INFO L764 garLoopResultBuilder]: Registering result SAFE for location pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:04,279 INFO L764 garLoopResultBuilder]: Registering result SAFE for location pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:04,279 INFO L764 garLoopResultBuilder]: Registering result SAFE for location pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:04,279 INFO L764 garLoopResultBuilder]: Registering result SAFE for location pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:04,308 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 10:56:04,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:04,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 10:56:04,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:04,847 INFO L857 garLoopResultBuilder]: For program point pEXIT(lines 12 22) no Hoare annotation was computed. [2021-08-27 10:56:04,848 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-08-27 10:56:04,848 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 20) no Hoare annotation was computed. [2021-08-27 10:56:04,848 INFO L857 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-08-27 10:56:04,848 INFO L860 garLoopResultBuilder]: At program point pENTRY(lines 12 22) the Hoare annotation is: true [2021-08-27 10:56:04,848 INFO L853 garLoopResultBuilder]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or .cse0 (<= p_~n 2147483646) .cse1 (not (<= |p_#in~n| 2147483646))) (or .cse0 (not (<= |p_#in~n| 2147483647)) .cse1 (and (<= 1 p_~n) (<= p_~r 2147483647) (<= p_~n 2147483647) (<= p_~m 2147483647))))) [2021-08-27 10:56:04,848 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-08-27 10:56:04,848 INFO L857 garLoopResultBuilder]: For program point L17-3(line 17) no Hoare annotation was computed. [2021-08-27 10:56:04,849 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 21) no Hoare annotation was computed. [2021-08-27 10:56:04,849 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-08-27 10:56:04,849 INFO L857 garLoopResultBuilder]: For program point pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-08-27 10:56:04,849 INFO L853 garLoopResultBuilder]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or .cse0 (<= p_~n 2147483646) .cse1 (not (<= |p_#in~n| 2147483646))) (or (and (<= 1 p_~r) (<= p_~r 2147483647) (<= p_~n 2147483647) (<= p_~m 2147483647)) .cse0 (not (<= |p_#in~n| 2147483647)) .cse1))) [2021-08-27 10:56:04,849 INFO L857 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2021-08-27 10:56:04,849 INFO L857 garLoopResultBuilder]: For program point pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-08-27 10:56:04,850 INFO L857 garLoopResultBuilder]: For program point pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-08-27 10:56:04,850 INFO L857 garLoopResultBuilder]: For program point pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-08-27 10:56:04,850 INFO L857 garLoopResultBuilder]: For program point pFINAL(lines 12 22) no Hoare annotation was computed. [2021-08-27 10:56:04,850 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 10:56:04,850 INFO L853 garLoopResultBuilder]: At program point L31(lines 24 32) the Hoare annotation is: (<= ULTIMATE.start_main_~r~0 2147483647) [2021-08-27 10:56:04,850 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 10:56:04,850 INFO L853 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647) (<= ULTIMATE.start_main_~r~0 2147483647)) [2021-08-27 10:56:04,851 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 10:56:04,851 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2021-08-27 10:56:04,851 INFO L857 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-08-27 10:56:04,851 INFO L857 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2021-08-27 10:56:04,854 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:56:04,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:56:04 BoogieIcfgContainer [2021-08-27 10:56:04,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:56:04,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:56:04,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:56:04,865 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:56:04,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:01" (3/4) ... [2021-08-27 10:56:04,867 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 10:56:04,871 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure p [2021-08-27 10:56:04,874 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-08-27 10:56:04,874 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-27 10:56:04,898 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:56:04,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:56:04,899 INFO L168 Benchmark]: Toolchain (without parser) took 4223.64 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 52.1 MB in the beginning and 36.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:04,900 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 69.2 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:56:04,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.93 ms. Allocated memory is still 69.2 MB. Free memory was 51.9 MB in the beginning and 43.1 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:04,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.59 ms. Allocated memory is still 69.2 MB. Free memory was 42.9 MB in the beginning and 41.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:04,901 INFO L168 Benchmark]: Boogie Preprocessor took 29.74 ms. Allocated memory is still 69.2 MB. Free memory was 41.6 MB in the beginning and 52.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:04,901 INFO L168 Benchmark]: RCFGBuilder took 318.95 ms. Allocated memory is still 69.2 MB. Free memory was 52.8 MB in the beginning and 41.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:04,901 INFO L168 Benchmark]: TraceAbstraction took 3596.94 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 41.3 MB in the beginning and 39.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:04,902 INFO L168 Benchmark]: Witness Printer took 33.75 ms. Allocated memory is still 83.9 MB. Free memory was 39.1 MB in the beginning and 36.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:04,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 69.2 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 201.93 ms. Allocated memory is still 69.2 MB. Free memory was 51.9 MB in the beginning and 43.1 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.59 ms. Allocated memory is still 69.2 MB. Free memory was 42.9 MB in the beginning and 41.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.74 ms. Allocated memory is still 69.2 MB. Free memory was 41.6 MB in the beginning and 52.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 318.95 ms. Allocated memory is still 69.2 MB. Free memory was 52.8 MB in the beginning and 41.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3596.94 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 41.3 MB in the beginning and 39.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 16.1 GB. * Witness Printer took 33.75 ms. Allocated memory is still 83.9 MB. Free memory was 39.1 MB in the beginning and 36.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 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: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: 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 2 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3517.0ms, OverallIterations: 8, TraceHistogramMax: 3, EmptinessCheckTime: 9.4ms, AutomataDifference: 802.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 344.0ms, InitialAbstractionConstructionTime: 8.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 133 SDtfs, 199 SDslu, 230 SDs, 0 SdLazy, 349 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 329.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 479.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 47.2ms AutomataMinimizationTime, 8 MinimizatonAttempts, 71 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 29 PreInvPairs, 29 NumberOfFragments, 100 HoareAnnotationTreeSize, 29 FomulaSimplifications, 2219 FormulaSimplificationTreeSizeReduction, 169.8ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 283 FormulaSimplificationTreeSizeReductionInter, 164.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 34.7ms SsaConstructionTime, 120.7ms SatisfiabilityAnalysisTime, 926.4ms InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 348 SizeOfPredicates, 9 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 0/30 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: 24]: Loop Invariant Derived loop invariant: r <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-08-27 10:56:04,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...