./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum_array-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab 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/loops/sum_array-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf04eabdc5b4c50cc28558a524d03f68fbf75e54 ....................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:59:49,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:59:49,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:59:49,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:59:49,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:59:49,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:59:49,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:59:49,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:59:49,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:59:49,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:59:49,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:59:49,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:59:49,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:59:49,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:59:49,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:59:49,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:59:49,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:59:49,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:59:49,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:59:49,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:59:49,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:59:49,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:59:49,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:59:49,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:59:49,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:59:49,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:59:49,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:59:49,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:59:49,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:59:49,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:59:49,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:59:49,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:59:49,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:59:49,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:59:49,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:59:49,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:59:49,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:59:49,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:59:49,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:59:49,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:59:49,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:59:49,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:59:49,637 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:59:49,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:59:49,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:59:49,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:59:49,639 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:59:49,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:59:49,640 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:59:49,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:59:49,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:59:49,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:59:49,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:59:49,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:59:49,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:59:49,641 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:59:49,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:59:49,642 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:59:49,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:59:49,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:59:49,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:59:49,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:59:49,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:59:49,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:59:49,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:59:49,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:59:49,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:59:49,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:59:49,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:59:49,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:59:49,645 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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf04eabdc5b4c50cc28558a524d03f68fbf75e54 [2019-11-27 23:59:49,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:59:49,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:59:49,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:59:49,959 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:59:49,959 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:59:49,960 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum_array-1.c [2019-11-27 23:59:50,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00106d77/58376a81a0aa49c9a4cc6e913078e05c/FLAGac4ac4d1c [2019-11-27 23:59:50,449 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:59:50,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-1.c [2019-11-27 23:59:50,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00106d77/58376a81a0aa49c9a4cc6e913078e05c/FLAGac4ac4d1c [2019-11-27 23:59:50,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00106d77/58376a81a0aa49c9a4cc6e913078e05c [2019-11-27 23:59:50,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:59:50,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:59:50,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:59:50,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:59:50,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:59:50,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:59:50" (1/1) ... [2019-11-27 23:59:50,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21695d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:50, skipping insertion in model container [2019-11-27 23:59:50,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:59:50" (1/1) ... [2019-11-27 23:59:50,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:59:50,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:59:51,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:59:51,090 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:59:51,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:59:51,136 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:59:51,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:51 WrapperNode [2019-11-27 23:59:51,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:59:51,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:59:51,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:59:51,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:59:51,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:51" (1/1) ... [2019-11-27 23:59:51,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:51" (1/1) ... [2019-11-27 23:59:51,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:59:51,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:59:51,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:59:51,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:59:51,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:51" (1/1) ... [2019-11-27 23:59:51,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:51" (1/1) ... [2019-11-27 23:59:51,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:51" (1/1) ... [2019-11-27 23:59:51,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:51" (1/1) ... [2019-11-27 23:59:51,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:51" (1/1) ... [2019-11-27 23:59:51,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:51" (1/1) ... [2019-11-27 23:59:51,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:51" (1/1) ... [2019-11-27 23:59:51,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:59:51,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:59:51,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:59:51,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:59:51,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:59:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:59:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:59:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:59:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:59:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:59:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:59:51,648 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:59:51,648 INFO L297 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-27 23:59:51,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:59:51 BoogieIcfgContainer [2019-11-27 23:59:51,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:59:51,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:59:51,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:59:51,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:59:51,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:59:50" (1/3) ... [2019-11-27 23:59:51,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b05c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:59:51, skipping insertion in model container [2019-11-27 23:59:51,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:51" (2/3) ... [2019-11-27 23:59:51,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b05c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:59:51, skipping insertion in model container [2019-11-27 23:59:51,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:59:51" (3/3) ... [2019-11-27 23:59:51,668 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2019-11-27 23:59:51,680 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:59:51,687 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:59:51,697 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:59:51,719 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:59:51,719 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:59:51,719 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:59:51,719 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:59:51,720 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:59:51,720 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:59:51,720 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:59:51,720 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:59:51,735 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-27 23:59:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:59:51,742 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:51,743 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:59:51,743 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:51,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:51,748 INFO L82 PathProgramCache]: Analyzing trace with hash -779788197, now seen corresponding path program 1 times [2019-11-27 23:59:51,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:51,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668841612] [2019-11-27 23:59:51,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:59:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:52,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668841612] [2019-11-27 23:59:52,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:59:52,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-27 23:59:52,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451261520] [2019-11-27 23:59:52,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-27 23:59:52,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:59:52,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-27 23:59:52,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:59:52,195 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2019-11-27 23:59:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:59:52,322 INFO L93 Difference]: Finished difference Result 60 states and 88 transitions. [2019-11-27 23:59:52,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:59:52,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-27 23:59:52,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:59:52,334 INFO L225 Difference]: With dead ends: 60 [2019-11-27 23:59:52,334 INFO L226 Difference]: Without dead ends: 29 [2019-11-27 23:59:52,337 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:59:52,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-27 23:59:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2019-11-27 23:59:52,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-27 23:59:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-27 23:59:52,372 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2019-11-27 23:59:52,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:59:52,372 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-27 23:59:52,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-27 23:59:52,373 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-27 23:59:52,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-27 23:59:52,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:52,374 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:59:52,374 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:52,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:52,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1602849365, now seen corresponding path program 1 times [2019-11-27 23:59:52,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:52,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575118388] [2019-11-27 23:59:52,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:59:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:59:52,754 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:59:52,754 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:59:52,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:59:52 BoogieIcfgContainer [2019-11-27 23:59:52,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:59:52,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:59:52,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:59:52,810 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:59:52,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:59:51" (3/4) ... [2019-11-27 23:59:52,813 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:59:52,908 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:59:52,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:59:52,912 INFO L168 Benchmark]: Toolchain (without parser) took 2054.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -76.9 MB). Peak memory consumption was 44.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:52,913 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:59:52,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.07 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:52,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:52,919 INFO L168 Benchmark]: Boogie Preprocessor took 34.62 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. [2019-11-27 23:59:52,920 INFO L168 Benchmark]: RCFGBuilder took 372.65 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:52,921 INFO L168 Benchmark]: TraceAbstraction took 1158.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:52,922 INFO L168 Benchmark]: Witness Printer took 98.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:59:52,933 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 281.07 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 104.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.62 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 372.65 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1158.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. * Witness Printer took 98.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 [L18] COND TRUE i