./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.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-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.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 3428809e66c8ffa9373e37ec3d02a46642c7f8bc .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:25:13,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:25:13,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:25:14,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:25:14,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:25:14,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:25:14,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:25:14,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:25:14,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:25:14,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:25:14,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:25:14,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:25:14,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:25:14,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:25:14,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:25:14,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:25:14,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:25:14,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:25:14,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:25:14,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:25:14,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:25:14,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:25:14,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:25:14,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:25:14,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:25:14,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:25:14,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:25:14,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:25:14,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:25:14,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:25:14,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:25:14,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:25:14,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:25:14,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:25:14,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:25:14,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:25:14,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:25:14,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:25:14,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:25:14,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:25:14,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:25:14,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:25:14,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:25:14,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:25:14,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:25:14,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:25:14,136 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:25:14,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:25:14,137 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:25:14,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:25:14,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:25:14,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:25:14,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:25:14,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:25:14,138 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:25:14,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:25:14,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:25:14,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:25:14,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:25:14,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:25:14,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:25:14,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:25:14,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:25:14,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:25:14,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:25:14,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:25:14,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:25:14,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:25:14,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:25:14,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:25:14,144 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 -> 3428809e66c8ffa9373e37ec3d02a46642c7f8bc [2020-10-20 06:25:14,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:25:14,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:25:14,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:25:14,422 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:25:14,423 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:25:14,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c [2020-10-20 06:25:14,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e578edda/2ec97ca5e75a4306bcc925619b116eba/FLAGd077ed188 [2020-10-20 06:25:14,984 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:25:14,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c [2020-10-20 06:25:14,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e578edda/2ec97ca5e75a4306bcc925619b116eba/FLAGd077ed188 [2020-10-20 06:25:15,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e578edda/2ec97ca5e75a4306bcc925619b116eba [2020-10-20 06:25:15,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:25:15,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:25:15,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:15,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:25:15,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:25:15,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:15" (1/1) ... [2020-10-20 06:25:15,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b17495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15, skipping insertion in model container [2020-10-20 06:25:15,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:15" (1/1) ... [2020-10-20 06:25:15,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:25:15,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:25:15,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:15,635 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:25:15,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:15,672 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:25:15,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15 WrapperNode [2020-10-20 06:25:15,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:15,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:15,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:25:15,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:25:15,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15" (1/1) ... [2020-10-20 06:25:15,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15" (1/1) ... [2020-10-20 06:25:15,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:15,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:25:15,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:25:15,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:25:15,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15" (1/1) ... [2020-10-20 06:25:15,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15" (1/1) ... [2020-10-20 06:25:15,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15" (1/1) ... [2020-10-20 06:25:15,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15" (1/1) ... [2020-10-20 06:25:15,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15" (1/1) ... [2020-10-20 06:25:15,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15" (1/1) ... [2020-10-20 06:25:15,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15" (1/1) ... [2020-10-20 06:25:15,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:25:15,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:25:15,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:25:15,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:25:15,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15" (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 06:25:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:25:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:25:15,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:25:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:25:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:25:15,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:25:16,021 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:25:16,022 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 06:25:16,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:16 BoogieIcfgContainer [2020-10-20 06:25:16,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:25:16,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:25:16,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:25:16,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:25:16,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:25:15" (1/3) ... [2020-10-20 06:25:16,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8c987c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:16, skipping insertion in model container [2020-10-20 06:25:16,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:15" (2/3) ... [2020-10-20 06:25:16,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8c987c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:16, skipping insertion in model container [2020-10-20 06:25:16,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:16" (3/3) ... [2020-10-20 06:25:16,034 INFO L111 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c [2020-10-20 06:25:16,046 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:25:16,054 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-20 06:25:16,070 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 06:25:16,104 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:25:16,105 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:25:16,105 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:25:16,106 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:25:16,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:25:16,106 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:25:16,107 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:25:16,107 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:25:16,130 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-20 06:25:16,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:25:16,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:16,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:25:16,139 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:16,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:16,147 INFO L82 PathProgramCache]: Analyzing trace with hash 889574220, now seen corresponding path program 1 times [2020-10-20 06:25:16,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:16,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253887202] [2020-10-20 06:25:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:16,363 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 06:25:16,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253887202] [2020-10-20 06:25:16,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:16,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:25:16,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522029372] [2020-10-20 06:25:16,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:25:16,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:16,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:25:16,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:25:16,390 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-10-20 06:25:16,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:16,475 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2020-10-20 06:25:16,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:25:16,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-20 06:25:16,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:16,486 INFO L225 Difference]: With dead ends: 60 [2020-10-20 06:25:16,486 INFO L226 Difference]: Without dead ends: 35 [2020-10-20 06:25:16,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:25:16,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-20 06:25:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2020-10-20 06:25:16,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 06:25:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-20 06:25:16,522 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 6 [2020-10-20 06:25:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:16,523 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-20 06:25:16,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:25:16,523 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-20 06:25:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:25:16,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:16,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:16,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:25:16,524 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:16,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:16,531 INFO L82 PathProgramCache]: Analyzing trace with hash 180741427, now seen corresponding path program 1 times [2020-10-20 06:25:16,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:16,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203799902] [2020-10-20 06:25:16,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:16,573 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 06:25:16,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203799902] [2020-10-20 06:25:16,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:16,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:25:16,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161066982] [2020-10-20 06:25:16,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:25:16,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:16,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:25:16,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:25:16,577 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 3 states. [2020-10-20 06:25:16,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:16,598 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-10-20 06:25:16,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:25:16,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 06:25:16,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:16,600 INFO L225 Difference]: With dead ends: 35 [2020-10-20 06:25:16,600 INFO L226 Difference]: Without dead ends: 24 [2020-10-20 06:25:16,601 INFO L677 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 [2020-10-20 06:25:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-20 06:25:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-20 06:25:16,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 06:25:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-20 06:25:16,607 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 8 [2020-10-20 06:25:16,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:16,607 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-20 06:25:16,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:25:16,608 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-20 06:25:16,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:25:16,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:16,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:16,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:25:16,609 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:16,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:16,609 INFO L82 PathProgramCache]: Analyzing trace with hash -869586168, now seen corresponding path program 1 times [2020-10-20 06:25:16,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:16,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738557010] [2020-10-20 06:25:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:16,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738557010] [2020-10-20 06:25:16,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195829224] [2020-10-20 06:25:16,684 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 06:25:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:16,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:25:16,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:16,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:16,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-20 06:25:16,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533164573] [2020-10-20 06:25:16,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:25:16,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:16,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:25:16,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:25:16,817 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-10-20 06:25:16,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:16,906 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-10-20 06:25:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:25:16,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-10-20 06:25:16,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:16,908 INFO L225 Difference]: With dead ends: 41 [2020-10-20 06:25:16,908 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 06:25:16,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:25:16,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 06:25:16,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-10-20 06:25:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:25:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-20 06:25:16,915 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2020-10-20 06:25:16,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:16,916 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-20 06:25:16,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:25:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-20 06:25:16,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:25:16,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:16,917 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2020-10-20 06:25:17,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 06:25:17,119 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:17,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:17,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1187367381, now seen corresponding path program 1 times [2020-10-20 06:25:17,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:17,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018485008] [2020-10-20 06:25:17,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:17,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018485008] [2020-10-20 06:25:17,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561422330] [2020-10-20 06:25:17,238 INFO L95 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 [2020-10-20 06:25:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:17,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:25:17,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:17,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:25:17,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-10-20 06:25:17,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560366182] [2020-10-20 06:25:17,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:25:17,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:17,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:25:17,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:25:17,314 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 6 states. [2020-10-20 06:25:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:17,377 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-10-20 06:25:17,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:25:17,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-20 06:25:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:17,379 INFO L225 Difference]: With dead ends: 27 [2020-10-20 06:25:17,379 INFO L226 Difference]: Without dead ends: 26 [2020-10-20 06:25:17,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:25:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-20 06:25:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-20 06:25:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-20 06:25:17,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-20 06:25:17,385 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 11 [2020-10-20 06:25:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:17,386 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-20 06:25:17,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:25:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-20 06:25:17,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 06:25:17,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:17,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:17,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:17,599 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:17,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:17,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1844723183, now seen corresponding path program 1 times [2020-10-20 06:25:17,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:17,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948226002] [2020-10-20 06:25:17,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:25:17,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948226002] [2020-10-20 06:25:17,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:17,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:25:17,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135755349] [2020-10-20 06:25:17,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:25:17,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:17,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:25:17,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:25:17,645 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 3 states. [2020-10-20 06:25:17,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:17,696 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-10-20 06:25:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:25:17,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-20 06:25:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:17,698 INFO L225 Difference]: With dead ends: 36 [2020-10-20 06:25:17,698 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 06:25:17,698 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 06:25:17,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 06:25:17,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-10-20 06:25:17,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 06:25:17,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-20 06:25:17,704 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 12 [2020-10-20 06:25:17,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:17,704 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-20 06:25:17,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:25:17,704 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-20 06:25:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:25:17,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:17,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:17,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:25:17,706 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:17,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:17,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1042512047, now seen corresponding path program 1 times [2020-10-20 06:25:17,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:17,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920135740] [2020-10-20 06:25:17,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:25:17,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:25:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:25:17,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:25:17,762 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:25:17,762 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:25:17,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:25:17,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:25:17 BoogieIcfgContainer [2020-10-20 06:25:17,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:25:17,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:25:17,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:25:17,796 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:25:17,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:16" (3/4) ... [2020-10-20 06:25:17,799 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:25:17,855 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:25:17,855 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:25:17,858 INFO L168 Benchmark]: Toolchain (without parser) took 2509.62 ms. Allocated memory was 34.6 MB in the beginning and 49.3 MB in the end (delta: 14.7 MB). Free memory was 12.3 MB in the beginning and 21.0 MB in the end (delta: -8.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:17,859 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.3 MB in the end (delta: 57.5 kB). Peak memory consumption was 57.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:25:17,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.97 ms. Allocated memory was 34.6 MB in the beginning and 41.9 MB in the end (delta: 7.3 MB). Free memory was 11.4 MB in the beginning and 25.8 MB in the end (delta: -14.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:17,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.83 ms. Allocated memory is still 41.9 MB. Free memory was 25.6 MB in the beginning and 24.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:17,862 INFO L168 Benchmark]: Boogie Preprocessor took 25.29 ms. Allocated memory is still 41.9 MB. Free memory was 24.0 MB in the beginning and 22.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:17,863 INFO L168 Benchmark]: RCFGBuilder took 282.99 ms. Allocated memory is still 41.9 MB. Free memory was 22.6 MB in the beginning and 19.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:17,863 INFO L168 Benchmark]: TraceAbstraction took 1769.73 ms. Allocated memory was 41.9 MB in the beginning and 49.3 MB in the end (delta: 7.3 MB). Free memory was 19.0 MB in the beginning and 23.5 MB in the end (delta: -4.5 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:17,864 INFO L168 Benchmark]: Witness Printer took 60.18 ms. Allocated memory is still 49.3 MB. Free memory was 23.5 MB in the beginning and 21.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:17,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.3 MB in the end (delta: 57.5 kB). Peak memory consumption was 57.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 317.97 ms. Allocated memory was 34.6 MB in the beginning and 41.9 MB in the end (delta: 7.3 MB). Free memory was 11.4 MB in the beginning and 25.8 MB in the end (delta: -14.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 41.83 ms. Allocated memory is still 41.9 MB. Free memory was 25.6 MB in the beginning and 24.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 25.29 ms. Allocated memory is still 41.9 MB. Free memory was 24.0 MB in the beginning and 22.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 282.99 ms. Allocated memory is still 41.9 MB. Free memory was 22.6 MB in the beginning and 19.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1769.73 ms. Allocated memory was 41.9 MB in the beginning and 49.3 MB in the end (delta: 7.3 MB). Free memory was 19.0 MB in the beginning and 23.5 MB in the end (delta: -4.5 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * Witness Printer took 60.18 ms. Allocated memory is still 49.3 MB. Free memory was 23.5 MB in the beginning and 21.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int a_length = __VERIFIER_nondet_int(); [L13] COND FALSE !(a_length < 1) [L16] int a[a_length]; [L17] int j = 0; [L17] COND TRUE j < a_length [L18] a[j] = __VERIFIER_nondet_int() [L17] j++ [L17] COND FALSE !(j < a_length) [L20] int offset = 1; [L21] int i = 0; [L22] COND TRUE i < a_length [L23] EXPR a[i] [L23] COND FALSE !(a[i] < 0) [L26] EXPR i + offset [L26] EXPR a[i] [L26] i + offset + a[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 81 SDslu, 146 SDs, 0 SdLazy, 107 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 1399 SizeOfPredicates, 4 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 5/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...