./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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-lit/Urban-WST2013-Fig2.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 31d0c4253184c01eb9f9573658b07bed7aa94585 .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:24:48,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:24:48,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:24:49,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:24:49,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:24:49,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:24:49,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:24:49,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:24:49,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:24:49,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:24:49,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:24:49,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:24:49,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:24:49,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:24:49,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:24:49,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:24:49,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:24:49,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:24:49,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:24:49,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:24:49,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:24:49,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:24:49,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:24:49,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:24:49,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:24:49,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:24:49,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:24:49,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:24:49,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:24:49,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:24:49,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:24:49,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:24:49,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:24:49,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:24:49,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:24:49,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:24:49,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:24:49,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:24:49,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:24:49,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:24:49,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:24:49,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:24:49,079 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:24:49,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:24:49,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:24:49,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:24:49,081 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:24:49,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:24:49,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:24:49,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:24:49,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:24:49,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:24:49,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:24:49,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:24:49,085 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:24:49,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:24:49,086 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:24:49,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:24:49,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:24:49,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:24:49,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:24:49,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:24:49,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:24:49,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:24:49,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:24:49,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:24:49,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:24:49,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:24:49,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:24:49,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:24:49,090 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 -> 31d0c4253184c01eb9f9573658b07bed7aa94585 [2019-11-28 20:24:49,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:24:49,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:24:49,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:24:49,411 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:24:49,412 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:24:49,412 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2019-11-28 20:24:49,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b9a9fb68/d4660ed44feb403ab118700f7da8c597/FLAGc3305d190 [2019-11-28 20:24:49,939 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:24:49,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2019-11-28 20:24:49,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b9a9fb68/d4660ed44feb403ab118700f7da8c597/FLAGc3305d190 [2019-11-28 20:24:50,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b9a9fb68/d4660ed44feb403ab118700f7da8c597 [2019-11-28 20:24:50,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:24:50,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:24:50,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:50,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:24:50,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:24:50,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e4d6762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50, skipping insertion in model container [2019-11-28 20:24:50,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:24:50,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:24:50,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:50,644 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:24:50,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:50,685 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:24:50,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50 WrapperNode [2019-11-28 20:24:50,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:50,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:50,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:24:50,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:24:50,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:50,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:24:50,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:24:50,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:24:50,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:24:50,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:24:50,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:24:50,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:24:50,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (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 [2019-11-28 20:24:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:24:50,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:24:51,056 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:24:51,057 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 20:24:51,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:51 BoogieIcfgContainer [2019-11-28 20:24:51,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:24:51,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:24:51,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:24:51,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:24:51,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:24:50" (1/3) ... [2019-11-28 20:24:51,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd8b814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:51, skipping insertion in model container [2019-11-28 20:24:51,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (2/3) ... [2019-11-28 20:24:51,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd8b814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:51, skipping insertion in model container [2019-11-28 20:24:51,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:51" (3/3) ... [2019-11-28 20:24:51,067 INFO L109 eAbstractionObserver]: Analyzing ICFG Urban-WST2013-Fig2.c [2019-11-28 20:24:51,083 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:24:51,099 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 20:24:51,133 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 20:24:51,180 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:24:51,180 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:24:51,180 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:24:51,190 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:24:51,190 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:24:51,190 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:24:51,191 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:24:51,191 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:24:51,228 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-28 20:24:51,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:24:51,234 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:51,235 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:24:51,235 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:51,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:51,242 INFO L82 PathProgramCache]: Analyzing trace with hash 963476, now seen corresponding path program 1 times [2019-11-28 20:24:51,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:51,251 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606956175] [2019-11-28 20:24:51,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:51,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606956175] [2019-11-28 20:24:51,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:51,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:24:51,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225702509] [2019-11-28 20:24:51,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:51,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:51,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:51,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:51,426 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-28 20:24:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:51,490 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2019-11-28 20:24:51,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:51,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 20:24:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:51,501 INFO L225 Difference]: With dead ends: 32 [2019-11-28 20:24:51,501 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 20:24:51,504 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 20:24:51,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 20:24:51,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 20:24:51,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-28 20:24:51,537 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 4 [2019-11-28 20:24:51,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:51,537 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 20:24:51,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:51,537 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-28 20:24:51,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:24:51,538 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:51,538 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:24:51,539 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:51,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:51,539 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-11-28 20:24:51,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:51,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008614126] [2019-11-28 20:24:51,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:51,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008614126] [2019-11-28 20:24:51,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:51,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:24:51,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275177051] [2019-11-28 20:24:51,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:51,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:51,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:51,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:51,571 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2019-11-28 20:24:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:51,595 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-28 20:24:51,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:51,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 20:24:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:51,596 INFO L225 Difference]: With dead ends: 15 [2019-11-28 20:24:51,596 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 20:24:51,597 INFO L630 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 [2019-11-28 20:24:51,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 20:24:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-28 20:24:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 20:24:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-28 20:24:51,602 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 4 [2019-11-28 20:24:51,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:51,602 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-28 20:24:51,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:51,602 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-28 20:24:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 20:24:51,603 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:51,603 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:51,604 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:51,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:51,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166603, now seen corresponding path program 1 times [2019-11-28 20:24:51,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:51,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143833410] [2019-11-28 20:24:51,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:51,658 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143833410] [2019-11-28 20:24:51,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926283689] [2019-11-28 20:24:51,659 INFO L94 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 [2019-11-28 20:24:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:51,702 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:24:51,706 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:24:51,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:24:51,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2019-11-28 20:24:51,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619168815] [2019-11-28 20:24:51,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:51,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:51,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:51,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:51,722 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2019-11-28 20:24:51,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:51,733 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-11-28 20:24:51,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:51,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 20:24:51,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:51,735 INFO L225 Difference]: With dead ends: 13 [2019-11-28 20:24:51,735 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 20:24:51,735 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:51,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 20:24:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 20:24:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 20:24:51,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-11-28 20:24:51,739 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2019-11-28 20:24:51,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:51,740 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-28 20:24:51,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:51,740 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-11-28 20:24:51,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 20:24:51,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:51,740 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:51,941 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:51,942 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:51,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:51,943 INFO L82 PathProgramCache]: Analyzing trace with hash 784508327, now seen corresponding path program 1 times [2019-11-28 20:24:51,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:51,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248878642] [2019-11-28 20:24:51,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:51,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248878642] [2019-11-28 20:24:51,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805418225] [2019-11-28 20:24:51,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:52,020 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 20:24:52,021 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:24:52,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:24:52,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2019-11-28 20:24:52,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567713209] [2019-11-28 20:24:52,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:52,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:52,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:52,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:52,051 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 3 states. [2019-11-28 20:24:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:52,063 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-28 20:24:52,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:52,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-28 20:24:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:52,065 INFO L225 Difference]: With dead ends: 12 [2019-11-28 20:24:52,065 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 20:24:52,067 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:52,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 20:24:52,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 20:24:52,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 20:24:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-28 20:24:52,071 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2019-11-28 20:24:52,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:52,072 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-28 20:24:52,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:52,073 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-11-28 20:24:52,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 20:24:52,074 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:52,074 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2019-11-28 20:24:52,274 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:52,275 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:52,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:52,275 INFO L82 PathProgramCache]: Analyzing trace with hash 784510025, now seen corresponding path program 1 times [2019-11-28 20:24:52,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:52,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348595128] [2019-11-28 20:24:52,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:24:52,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348595128] [2019-11-28 20:24:52,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:52,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:24:52,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261874653] [2019-11-28 20:24:52,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:52,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:52,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:52,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:52,310 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 3 states. [2019-11-28 20:24:52,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:52,329 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-11-28 20:24:52,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:52,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-28 20:24:52,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:52,330 INFO L225 Difference]: With dead ends: 11 [2019-11-28 20:24:52,330 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 20:24:52,330 INFO L630 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 [2019-11-28 20:24:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 20:24:52,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 20:24:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 20:24:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:24:52,331 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-28 20:24:52,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:52,331 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:24:52,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:24:52,332 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 20:24:52,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 20:24:52,366 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-28 20:24:52,366 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 20:24:52,367 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-11-28 20:24:52,367 INFO L242 CegarLoopResult]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x1~0 10) (<= 0 (+ ULTIMATE.start_main_~x1~0 2147483648)) (<= ULTIMATE.start_main_~x2~0 10)) [2019-11-28 20:24:52,367 INFO L246 CegarLoopResult]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2019-11-28 20:24:52,367 INFO L242 CegarLoopResult]: At program point L19-2(lines 19 25) the Hoare annotation is: (<= 0 (+ ULTIMATE.start_main_~x1~0 2147483648)) [2019-11-28 20:24:52,368 INFO L246 CegarLoopResult]: For program point L19-3(lines 19 25) no Hoare annotation was computed. [2019-11-28 20:24:52,368 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-28 20:24:52,368 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-11-28 20:24:52,368 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 20:24:52,368 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 20:24:52,368 INFO L249 CegarLoopResult]: At program point L26(lines 14 27) the Hoare annotation is: true [2019-11-28 20:24:52,368 INFO L246 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2019-11-28 20:24:52,369 INFO L246 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-28 20:24:52,370 INFO L246 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-28 20:24:52,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:24:52 BoogieIcfgContainer [2019-11-28 20:24:52,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:24:52,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:24:52,388 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:24:52,389 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:24:52,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:51" (3/4) ... [2019-11-28 20:24:52,393 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 20:24:52,404 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 20:24:52,404 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 20:24:52,454 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:24:52,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:24:52,456 INFO L168 Benchmark]: Toolchain (without parser) took 2089.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 952.3 MB in the beginning and 1.0 GB in the end (delta: -70.9 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:52,457 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:24:52,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.47 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:52,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 113.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:52,460 INFO L168 Benchmark]: Boogie Preprocessor took 30.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:52,460 INFO L168 Benchmark]: RCFGBuilder took 226.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:52,461 INFO L168 Benchmark]: TraceAbstraction took 1327.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:52,462 INFO L168 Benchmark]: Witness Printer took 66.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:52,466 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 319.47 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 113.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 226.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1327.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 11.5 GB. * Witness Printer took 66.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 <= x1 + 2147483648 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (x1 <= 10 && 0 <= x1 + 2147483648) && x2 <= 10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 14 SDslu, 10 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 18 HoareAnnotationTreeSize, 3 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 643 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 5/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...