./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/MutualRecursion_1b.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 9072a9376e1e28de1ef4dc11b7134f6f175023b7 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:22:05,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:22:05,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:22:05,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:22:05,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:22:05,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:22:05,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:22:05,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:22:05,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:22:05,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:22:05,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:22:05,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:22:05,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:22:05,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:22:05,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:22:05,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:22:05,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:22:05,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:22:05,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:22:05,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:22:05,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:22:05,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:22:05,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:22:05,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:22:05,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:22:05,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:22:05,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:22:05,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:22:05,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:22:05,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:22:05,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:22:05,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:22:05,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:22:05,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:22:05,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:22:05,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:22:05,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:22:05,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:22:05,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:22:05,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:22:05,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:22:05,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:22:05,446 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:22:05,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:22:05,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:22:05,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:22:05,449 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:22:05,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:22:05,450 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:22:05,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:22:05,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:22:05,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:22:05,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:22:05,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:22:05,452 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:22:05,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:22:05,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:22:05,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:22:05,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:22:05,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:22:05,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:22:05,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:22:05,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:22:05,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:22:05,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:22:05,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:22:05,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:22:05,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:22:05,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:22:05,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:22:05,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 9072a9376e1e28de1ef4dc11b7134f6f175023b7 [2020-10-20 06:22:05,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:22:05,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:22:05,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:22:05,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:22:05,697 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:22:05,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2020-10-20 06:22:05,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3210eea6c/a0498ce94b794919b38360f109ca3cb5/FLAG473949c81 [2020-10-20 06:22:06,244 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:22:06,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2020-10-20 06:22:06,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3210eea6c/a0498ce94b794919b38360f109ca3cb5/FLAG473949c81 [2020-10-20 06:22:06,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3210eea6c/a0498ce94b794919b38360f109ca3cb5 [2020-10-20 06:22:06,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:22:06,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:22:06,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:22:06,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:22:06,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:22:06,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:22:06" (1/1) ... [2020-10-20 06:22:06,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4451848f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06, skipping insertion in model container [2020-10-20 06:22:06,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:22:06" (1/1) ... [2020-10-20 06:22:06,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:22:06,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:22:06,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:22:06,931 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:22:06,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:22:06,964 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:22:06,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06 WrapperNode [2020-10-20 06:22:06,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:22:06,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:22:06,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:22:06,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:22:06,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06" (1/1) ... [2020-10-20 06:22:06,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06" (1/1) ... [2020-10-20 06:22:06,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:22:06,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:22:06,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:22:06,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:22:07,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06" (1/1) ... [2020-10-20 06:22:07,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06" (1/1) ... [2020-10-20 06:22:07,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06" (1/1) ... [2020-10-20 06:22:07,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06" (1/1) ... [2020-10-20 06:22:07,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06" (1/1) ... [2020-10-20 06:22:07,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06" (1/1) ... [2020-10-20 06:22:07,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06" (1/1) ... [2020-10-20 06:22:07,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:22:07,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:22:07,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:22:07,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:22:07,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:22:07,075 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-20 06:22:07,075 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-20 06:22:07,075 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-10-20 06:22:07,075 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-10-20 06:22:07,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:22:07,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:22:07,302 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:22:07,302 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 06:22:07,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:07 BoogieIcfgContainer [2020-10-20 06:22:07,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:22:07,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:22:07,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:22:07,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:22:07,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:22:06" (1/3) ... [2020-10-20 06:22:07,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5d250e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:22:07, skipping insertion in model container [2020-10-20 06:22:07,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:06" (2/3) ... [2020-10-20 06:22:07,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5d250e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:22:07, skipping insertion in model container [2020-10-20 06:22:07,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:07" (3/3) ... [2020-10-20 06:22:07,312 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1b.c [2020-10-20 06:22:07,327 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:22:07,336 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-10-20 06:22:07,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-20 06:22:07,370 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:22:07,370 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:22:07,371 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:22:07,371 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:22:07,371 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:22:07,371 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:22:07,371 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:22:07,371 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:22:07,390 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-20 06:22:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:22:07,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:07,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:22:07,397 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:07,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:07,403 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2020-10-20 06:22:07,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:07,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572862043] [2020-10-20 06:22:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:07,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572862043] [2020-10-20 06:22:07,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:07,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:22:07,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897374937] [2020-10-20 06:22:07,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:22:07,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:07,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:22:07,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:22:07,646 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2020-10-20 06:22:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:07,779 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-10-20 06:22:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:22:07,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-10-20 06:22:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:07,802 INFO L225 Difference]: With dead ends: 64 [2020-10-20 06:22:07,803 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 06:22:07,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:07,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 06:22:07,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-10-20 06:22:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 06:22:07,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-10-20 06:22:07,858 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2020-10-20 06:22:07,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:07,858 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-10-20 06:22:07,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:22:07,859 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-10-20 06:22:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:22:07,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:07,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:22:07,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:22:07,860 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:07,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:07,861 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2020-10-20 06:22:07,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:07,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848843014] [2020-10-20 06:22:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:07,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848843014] [2020-10-20 06:22:07,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:07,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:22:07,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389700201] [2020-10-20 06:22:07,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:07,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:07,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:07,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:07,893 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2020-10-20 06:22:07,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:07,918 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-20 06:22:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:07,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 06:22:07,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:07,921 INFO L225 Difference]: With dead ends: 52 [2020-10-20 06:22:07,921 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 06:22:07,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:07,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 06:22:07,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-20 06:22:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-20 06:22:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-20 06:22:07,934 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2020-10-20 06:22:07,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:07,934 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-20 06:22:07,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:07,935 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-20 06:22:07,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 06:22:07,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:07,936 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:07,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:22:07,937 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:07,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:07,937 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2020-10-20 06:22:07,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:07,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958863596] [2020-10-20 06:22:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:08,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958863596] [2020-10-20 06:22:08,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:08,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:22:08,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438056011] [2020-10-20 06:22:08,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:22:08,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:08,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:22:08,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:22:08,053 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2020-10-20 06:22:08,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:08,290 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-10-20 06:22:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:22:08,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-20 06:22:08,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:08,292 INFO L225 Difference]: With dead ends: 66 [2020-10-20 06:22:08,292 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 06:22:08,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:22:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 06:22:08,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-10-20 06:22:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-20 06:22:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-20 06:22:08,306 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2020-10-20 06:22:08,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:08,307 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-20 06:22:08,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:22:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-20 06:22:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 06:22:08,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:08,308 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:08,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:22:08,309 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:08,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:08,309 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2020-10-20 06:22:08,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:08,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314514573] [2020-10-20 06:22:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-20 06:22:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:22:08,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314514573] [2020-10-20 06:22:08,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:08,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:22:08,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689350838] [2020-10-20 06:22:08,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:08,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:08,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:08,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:08,358 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2020-10-20 06:22:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:08,385 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-20 06:22:08,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:08,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 06:22:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:08,387 INFO L225 Difference]: With dead ends: 61 [2020-10-20 06:22:08,388 INFO L226 Difference]: Without dead ends: 60 [2020-10-20 06:22:08,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-20 06:22:08,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-20 06:22:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-20 06:22:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-20 06:22:08,406 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2020-10-20 06:22:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:08,407 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-20 06:22:08,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-20 06:22:08,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:22:08,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:08,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:08,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:22:08,410 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:08,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:08,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2020-10-20 06:22:08,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:08,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109160493] [2020-10-20 06:22:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:22:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:22:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 06:22:08,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109160493] [2020-10-20 06:22:08,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:08,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:22:08,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884106240] [2020-10-20 06:22:08,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:22:08,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:08,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:22:08,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:22:08,486 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-10-20 06:22:08,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:08,546 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2020-10-20 06:22:08,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:22:08,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-20 06:22:08,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:08,550 INFO L225 Difference]: With dead ends: 93 [2020-10-20 06:22:08,551 INFO L226 Difference]: Without dead ends: 92 [2020-10-20 06:22:08,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-20 06:22:08,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2020-10-20 06:22:08,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-20 06:22:08,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-10-20 06:22:08,567 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2020-10-20 06:22:08,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:08,568 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-10-20 06:22:08,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:22:08,568 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-10-20 06:22:08,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 06:22:08,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:08,570 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:08,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:22:08,571 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:08,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:08,572 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2020-10-20 06:22:08,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:08,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128822634] [2020-10-20 06:22:08,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:22:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:22:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 06:22:08,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128822634] [2020-10-20 06:22:08,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:08,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:22:08,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176076811] [2020-10-20 06:22:08,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:22:08,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:08,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:22:08,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:22:08,636 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2020-10-20 06:22:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:08,699 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-10-20 06:22:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:22:08,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-20 06:22:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:08,702 INFO L225 Difference]: With dead ends: 93 [2020-10-20 06:22:08,702 INFO L226 Difference]: Without dead ends: 89 [2020-10-20 06:22:08,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-20 06:22:08,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2020-10-20 06:22:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-20 06:22:08,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2020-10-20 06:22:08,715 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2020-10-20 06:22:08,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:08,716 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2020-10-20 06:22:08,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:22:08,716 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2020-10-20 06:22:08,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 06:22:08,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:08,718 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:08,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:22:08,719 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:08,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:08,719 INFO L82 PathProgramCache]: Analyzing trace with hash -2082036524, now seen corresponding path program 1 times [2020-10-20 06:22:08,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:08,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179632833] [2020-10-20 06:22:08,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:22:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-20 06:22:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-20 06:22:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 06:22:08,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179632833] [2020-10-20 06:22:08,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166175230] [2020-10-20 06:22:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:22:08,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 06:22:09,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:09,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2020-10-20 06:22:09,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532407843] [2020-10-20 06:22:09,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:22:09,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:09,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:22:09,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:22:09,004 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 10 states. [2020-10-20 06:22:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:09,209 INFO L93 Difference]: Finished difference Result 157 states and 204 transitions. [2020-10-20 06:22:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:22:09,210 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-20 06:22:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:09,212 INFO L225 Difference]: With dead ends: 157 [2020-10-20 06:22:09,212 INFO L226 Difference]: Without dead ends: 82 [2020-10-20 06:22:09,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:22:09,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-20 06:22:09,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-10-20 06:22:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-20 06:22:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2020-10-20 06:22:09,226 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 32 [2020-10-20 06:22:09,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:09,226 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2020-10-20 06:22:09,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:22:09,227 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2020-10-20 06:22:09,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-20 06:22:09,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:09,231 INFO L422 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-20 06:22:09,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-20 06:22:09,446 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:09,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:09,446 INFO L82 PathProgramCache]: Analyzing trace with hash 564914831, now seen corresponding path program 1 times [2020-10-20 06:22:09,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:09,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149632942] [2020-10-20 06:22:09,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-20 06:22:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-20 06:22:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-20 06:22:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-10-20 06:22:09,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149632942] [2020-10-20 06:22:09,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:09,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:22:09,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930345509] [2020-10-20 06:22:09,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:22:09,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:09,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:22:09,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:22:09,681 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 8 states. [2020-10-20 06:22:09,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:09,752 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-10-20 06:22:09,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:22:09,752 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2020-10-20 06:22:09,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:09,757 INFO L225 Difference]: With dead ends: 78 [2020-10-20 06:22:09,757 INFO L226 Difference]: Without dead ends: 76 [2020-10-20 06:22:09,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:22:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-20 06:22:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-20 06:22:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 06:22:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2020-10-20 06:22:09,778 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 102 [2020-10-20 06:22:09,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:09,779 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2020-10-20 06:22:09,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:22:09,780 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2020-10-20 06:22:09,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-20 06:22:09,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:09,785 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:09,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:22:09,786 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:09,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:09,788 INFO L82 PathProgramCache]: Analyzing trace with hash -319407487, now seen corresponding path program 1 times [2020-10-20 06:22:09,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:09,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261762378] [2020-10-20 06:22:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-20 06:22:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-20 06:22:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-20 06:22:09,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261762378] [2020-10-20 06:22:09,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:09,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:22:09,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447414833] [2020-10-20 06:22:09,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:22:09,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:09,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:22:09,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:22:09,968 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand 8 states. [2020-10-20 06:22:10,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:10,027 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2020-10-20 06:22:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:22:10,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-20 06:22:10,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:10,028 INFO L225 Difference]: With dead ends: 76 [2020-10-20 06:22:10,029 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:22:10,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:22:10,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:22:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:22:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:22:10,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:22:10,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2020-10-20 06:22:10,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:10,031 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:22:10,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:22:10,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:22:10,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:22:10,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:22:10,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:22:10,226 INFO L274 CegarLoopResult]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2020-10-20 06:22:10,226 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (or (not (<= |f_#in~x| 2147483645)) (and (<= f_~x 2147483645) (<= 1 f_~x) (<= |f_#in~x| f_~x))) (not (<= (+ |f_#in~x| 1) 0))) [2020-10-20 06:22:10,226 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-10-20 06:22:10,226 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-10-20 06:22:10,227 INFO L274 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-10-20 06:22:10,227 INFO L274 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-10-20 06:22:10,227 INFO L270 CegarLoopResult]: At program point L14-4(line 14) the Hoare annotation is: (and (not (<= (+ |f_#in~x| 1) 0)) (or (and (<= f_~x 2147483645) (<= |f_#t~ret0| 0) (<= 1 f_~x) (<= 0 |f_#t~ret0|) (<= |f_#in~x| f_~x)) (not (<= |f_#in~x| 2147483645)))) [2020-10-20 06:22:10,227 INFO L274 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-10-20 06:22:10,227 INFO L274 CegarLoopResult]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-20 06:22:10,227 INFO L274 CegarLoopResult]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-20 06:22:10,227 INFO L274 CegarLoopResult]: For program point L14-6(line 14) no Hoare annotation was computed. [2020-10-20 06:22:10,228 INFO L274 CegarLoopResult]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2020-10-20 06:22:10,228 INFO L274 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2020-10-20 06:22:10,228 INFO L277 CegarLoopResult]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2020-10-20 06:22:10,228 INFO L274 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-20 06:22:10,229 INFO L274 CegarLoopResult]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-20 06:22:10,229 INFO L274 CegarLoopResult]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2020-10-20 06:22:10,229 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,229 INFO L274 CegarLoopResult]: For program point L19(lines 19 20) no Hoare annotation was computed. [2020-10-20 06:22:10,229 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,230 INFO L270 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (or (not (<= |g_#in~x| 2147483645)) (<= 1 g_~x)) (or (= |g_#in~x| g_~x) (not (<= |g_#in~x| 2147483647)))) [2020-10-20 06:22:10,230 INFO L274 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,230 INFO L274 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,230 INFO L274 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,231 INFO L270 CegarLoopResult]: At program point L20-6(line 20) the Hoare annotation is: (or (and (<= 1 g_~x) (<= 0 |g_#t~ret2|) (= |g_#in~x| g_~x) (<= |g_#t~ret2| 0)) (not (<= |g_#in~x| 2147483647))) [2020-10-20 06:22:10,231 INFO L274 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,231 INFO L274 CegarLoopResult]: For program point L20-8(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,231 INFO L274 CegarLoopResult]: For program point L20-9(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,232 INFO L274 CegarLoopResult]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,232 INFO L274 CegarLoopResult]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2020-10-20 06:22:10,232 INFO L274 CegarLoopResult]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,232 INFO L277 CegarLoopResult]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2020-10-20 06:22:10,232 INFO L274 CegarLoopResult]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,233 INFO L274 CegarLoopResult]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,233 INFO L274 CegarLoopResult]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,233 INFO L274 CegarLoopResult]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:22:10,233 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:22:10,233 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:22:10,234 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:22:10,234 INFO L270 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-10-20 06:22:10,234 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-10-20 06:22:10,234 INFO L274 CegarLoopResult]: For program point L24(lines 24 27) no Hoare annotation was computed. [2020-10-20 06:22:10,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:22:10 BoogieIcfgContainer [2020-10-20 06:22:10,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:22:10,240 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:22:10,240 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:22:10,240 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:22:10,241 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:07" (3/4) ... [2020-10-20 06:22:10,245 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:22:10,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2020-10-20 06:22:10,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2020-10-20 06:22:10,256 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 06:22:10,257 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:22:10,306 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:22:10,306 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:22:10,309 INFO L168 Benchmark]: Toolchain (without parser) took 3660.45 ms. Allocated memory was 34.6 MB in the beginning and 54.5 MB in the end (delta: 19.9 MB). Free memory was 11.3 MB in the beginning and 13.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 17.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:10,310 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 33.0 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 39.9 kB). Peak memory consumption was 39.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:22:10,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.30 ms. Allocated memory was 34.6 MB in the beginning and 44.0 MB in the end (delta: 9.4 MB). Free memory was 10.4 MB in the beginning and 28.3 MB in the end (delta: -17.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:10,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.08 ms. Allocated memory is still 44.0 MB. Free memory was 28.3 MB in the beginning and 26.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:10,312 INFO L168 Benchmark]: Boogie Preprocessor took 18.14 ms. Allocated memory is still 44.0 MB. Free memory was 26.8 MB in the beginning and 25.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:10,313 INFO L168 Benchmark]: RCFGBuilder took 292.49 ms. Allocated memory was 44.0 MB in the beginning and 43.5 MB in the end (delta: -524.3 kB). Free memory was 25.7 MB in the beginning and 22.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:10,314 INFO L168 Benchmark]: TraceAbstraction took 2934.45 ms. Allocated memory was 43.5 MB in the beginning and 54.5 MB in the end (delta: 11.0 MB). Free memory was 22.1 MB in the beginning and 16.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 21.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:10,314 INFO L168 Benchmark]: Witness Printer took 66.46 ms. Allocated memory is still 54.5 MB. Free memory was 16.9 MB in the beginning and 13.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:10,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 33.0 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 39.9 kB). Peak memory consumption was 39.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 310.30 ms. Allocated memory was 34.6 MB in the beginning and 44.0 MB in the end (delta: 9.4 MB). Free memory was 10.4 MB in the beginning and 28.3 MB in the end (delta: -17.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 27.08 ms. Allocated memory is still 44.0 MB. Free memory was 28.3 MB in the beginning and 26.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 18.14 ms. Allocated memory is still 44.0 MB. Free memory was 26.8 MB in the beginning and 25.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 292.49 ms. Allocated memory was 44.0 MB in the beginning and 43.5 MB in the end (delta: -524.3 kB). Free memory was 25.7 MB in the beginning and 22.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2934.45 ms. Allocated memory was 43.5 MB in the beginning and 54.5 MB in the end (delta: 11.0 MB). Free memory was 22.1 MB in the beginning and 16.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 21.1 MB. Max. memory is 14.3 GB. * Witness Printer took 66.46 ms. Allocated memory is still 54.5 MB. Free memory was 16.9 MB in the beginning and 13.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 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: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 9, TraceHistogramMax: 9, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 279 SDtfs, 216 SDslu, 818 SDs, 0 SdLazy, 458 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 43 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 64 PreInvPairs, 76 NumberOfFragments, 90 HoareAnnotationTreeSize, 64 FomulaSimplifications, 69 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 67 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 34287 SizeOfPredicates, 3 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 322/326 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...