./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/signedintegeroverflow-regression/PostfixDecrement.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 906a4fb5 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/signedintegeroverflow-regression/PostfixDecrement.i -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 5098e3d431ffea128b6fb3ac04da30361a618d04 ................................................................................................................................................................................................................................................................ 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 0.1.25-906a4fb [2020-10-19 18:28:55,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:28:55,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:28:55,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:28:55,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:28:55,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:28:55,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:28:55,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:28:55,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:28:55,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:28:55,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:28:55,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:28:55,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:28:55,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:28:55,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:28:55,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:28:55,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:28:55,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:28:55,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:28:55,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:28:55,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:28:55,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:28:55,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:28:55,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:28:55,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:28:55,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:28:55,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:28:55,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:28:55,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:28:55,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:28:55,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:28:55,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:28:55,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:28:55,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:28:55,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:28:55,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:28:55,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:28:55,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:28:55,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:28:55,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:28:55,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:28:55,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:28:55,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:28:55,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:28:55,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:28:55,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:28:55,672 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:28:55,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:28:55,673 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:28:55,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:28:55,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:28:55,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:28:55,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:28:55,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:28:55,676 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:28:55,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:28:55,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:28:55,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:28:55,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:28:55,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:28:55,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:28:55,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:28:55,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:28:55,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:28:55,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:28:55,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:28:55,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:28:55,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:28:55,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:28:55,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:28:55,681 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 -> 5098e3d431ffea128b6fb3ac04da30361a618d04 [2020-10-19 18:28:56,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:28:56,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:28:56,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:28:56,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:28:56,060 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:28:56,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/signedintegeroverflow-regression/PostfixDecrement.i [2020-10-19 18:28:56,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4d9df94/d162e63497c84df4bb20ccfd91a8641d/FLAG231558a08 [2020-10-19 18:28:56,617 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:28:56,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/signedintegeroverflow-regression/PostfixDecrement.i [2020-10-19 18:28:56,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4d9df94/d162e63497c84df4bb20ccfd91a8641d/FLAG231558a08 [2020-10-19 18:28:56,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4d9df94/d162e63497c84df4bb20ccfd91a8641d [2020-10-19 18:28:56,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:28:56,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:28:56,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:28:56,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:28:56,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:28:56,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:28:56" (1/1) ... [2020-10-19 18:28:56,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3c05fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:56, skipping insertion in model container [2020-10-19 18:28:56,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:28:56" (1/1) ... [2020-10-19 18:28:56,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:28:56,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:28:57,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:28:57,267 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:28:57,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:28:57,438 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:28:57,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57 WrapperNode [2020-10-19 18:28:57,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:28:57,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:28:57,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:28:57,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:28:57,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:28:57,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:28:57,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:28:57,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:28:57,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (1/1) ... [2020-10-19 18:28:57,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:28:57,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:28:57,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:28:57,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:28:57,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (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 [2020-10-19 18:28:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:28:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:28:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:28:57,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:28:57,885 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:28:57,886 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 18:28:57,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:28:57 BoogieIcfgContainer [2020-10-19 18:28:57,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:28:57,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:28:57,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:28:57,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:28:57,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:28:56" (1/3) ... [2020-10-19 18:28:57,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d25bae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:28:57, skipping insertion in model container [2020-10-19 18:28:57,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:28:57" (2/3) ... [2020-10-19 18:28:57,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d25bae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:28:57, skipping insertion in model container [2020-10-19 18:28:57,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:28:57" (3/3) ... [2020-10-19 18:28:57,898 INFO L111 eAbstractionObserver]: Analyzing ICFG PostfixDecrement.i [2020-10-19 18:28:57,911 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:28:57,922 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-19 18:28:57,941 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-19 18:28:57,972 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:28:57,972 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:28:57,972 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:28:57,972 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:28:57,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:28:57,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:28:57,974 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:28:57,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:28:57,999 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-10-19 18:28:58,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-19 18:28:58,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:28:58,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-19 18:28:58,009 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:28:58,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:28:58,018 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2020-10-19 18:28:58,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:28:58,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47760436] [2020-10-19 18:28:58,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:28:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:28:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:28:58,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47760436] [2020-10-19 18:28:58,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:28:58,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:28:58,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519139139] [2020-10-19 18:28:58,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:28:58,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:28:58,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:28:58,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:28:58,251 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-10-19 18:28:58,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:28:58,277 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-10-19 18:28:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:28:58,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-19 18:28:58,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:28:58,290 INFO L225 Difference]: With dead ends: 9 [2020-10-19 18:28:58,291 INFO L226 Difference]: Without dead ends: 5 [2020-10-19 18:28:58,294 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 [2020-10-19 18:28:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2020-10-19 18:28:58,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2020-10-19 18:28:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 18:28:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4 transitions. [2020-10-19 18:28:58,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 4 transitions. Word has length 3 [2020-10-19 18:28:58,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:28:58,332 INFO L481 AbstractCegarLoop]: Abstraction has 5 states and 4 transitions. [2020-10-19 18:28:58,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:28:58,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-10-19 18:28:58,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:28:58,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:28:58,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:28:58,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:28:58,334 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:28:58,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:28:58,335 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2020-10-19 18:28:58,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:28:58,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211979180] [2020-10-19 18:28:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:28:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:28:58,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:28:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:28:58,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:28:58,386 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:28:58,386 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:28:58,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:28:58,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:28:58 BoogieIcfgContainer [2020-10-19 18:28:58,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:28:58,410 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:28:58,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:28:58,411 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:28:58,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:28:57" (3/4) ... [2020-10-19 18:28:58,414 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:28:58,455 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:28:58,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:28:58,458 INFO L168 Benchmark]: Toolchain (without parser) took 1547.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -105.2 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:58,459 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:28:58,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -162.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:58,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:28:58,461 INFO L168 Benchmark]: Boogie Preprocessor took 25.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:28:58,462 INFO L168 Benchmark]: RCFGBuilder took 374.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:58,463 INFO L168 Benchmark]: TraceAbstraction took 520.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:58,464 INFO L168 Benchmark]: Witness Printer took 45.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:58,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 522.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -162.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 374.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 520.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Witness Printer took 45.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 333]: integer overflow possible integer overflow possible We found a FailurePath: [L332] int x = -2147483647 - 1; [L333] x-- - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...