./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sina4f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 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/array-fpi/sina4f.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 02c74eb559f45619a2b38e357b8af6508fe311d8 .............................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-678e011 [2019-11-19 20:50:26,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 20:50:26,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 20:50:26,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 20:50:26,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 20:50:26,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 20:50:26,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 20:50:26,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 20:50:26,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 20:50:26,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 20:50:26,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 20:50:26,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 20:50:26,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 20:50:26,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 20:50:26,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 20:50:26,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 20:50:26,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 20:50:26,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 20:50:26,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 20:50:26,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 20:50:26,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 20:50:26,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 20:50:26,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 20:50:26,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 20:50:26,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 20:50:26,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 20:50:26,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 20:50:26,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 20:50:26,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 20:50:26,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 20:50:26,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 20:50:26,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 20:50:26,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 20:50:26,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 20:50:26,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 20:50:26,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 20:50:26,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 20:50:26,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 20:50:26,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 20:50:26,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 20:50:26,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 20:50:26,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 20:50:26,770 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 20:50:26,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 20:50:26,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 20:50:26,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 20:50:26,772 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 20:50:26,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 20:50:26,773 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 20:50:26,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 20:50:26,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 20:50:26,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 20:50:26,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 20:50:26,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 20:50:26,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 20:50:26,774 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 20:50:26,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 20:50:26,774 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 20:50:26,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 20:50:26,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 20:50:26,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 20:50:26,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 20:50:26,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 20:50:26,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 20:50:26,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 20:50:26,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 20:50:26,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 20:50:26,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 20:50:26,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 20:50:26,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 20:50:26,777 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 -> 02c74eb559f45619a2b38e357b8af6508fe311d8 [2019-11-19 20:50:27,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 20:50:27,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 20:50:27,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 20:50:27,106 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 20:50:27,107 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 20:50:27,107 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sina4f.c [2019-11-19 20:50:27,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20cf7261f/e9f4f2f10e0641d49507ea996e121c59/FLAGebfbe2b17 [2019-11-19 20:50:27,650 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 20:50:27,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina4f.c [2019-11-19 20:50:27,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20cf7261f/e9f4f2f10e0641d49507ea996e121c59/FLAGebfbe2b17 [2019-11-19 20:50:28,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20cf7261f/e9f4f2f10e0641d49507ea996e121c59 [2019-11-19 20:50:28,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 20:50:28,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 20:50:28,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 20:50:28,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 20:50:28,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 20:50:28,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:50:28" (1/1) ... [2019-11-19 20:50:28,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@429fe01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28, skipping insertion in model container [2019-11-19 20:50:28,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:50:28" (1/1) ... [2019-11-19 20:50:28,074 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 20:50:28,098 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 20:50:28,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:50:28,399 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 20:50:28,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:50:28,562 INFO L192 MainTranslator]: Completed translation [2019-11-19 20:50:28,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28 WrapperNode [2019-11-19 20:50:28,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 20:50:28,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 20:50:28,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 20:50:28,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 20:50:28,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28" (1/1) ... [2019-11-19 20:50:28,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28" (1/1) ... [2019-11-19 20:50:28,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 20:50:28,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 20:50:28,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 20:50:28,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 20:50:28,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28" (1/1) ... [2019-11-19 20:50:28,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28" (1/1) ... [2019-11-19 20:50:28,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28" (1/1) ... [2019-11-19 20:50:28,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28" (1/1) ... [2019-11-19 20:50:28,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28" (1/1) ... [2019-11-19 20:50:28,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28" (1/1) ... [2019-11-19 20:50:28,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28" (1/1) ... [2019-11-19 20:50:28,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 20:50:28,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 20:50:28,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 20:50:28,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 20:50:28,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28" (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 [2019-11-19 20:50:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 20:50:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 20:50:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 20:50:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 20:50:28,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 20:50:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 20:50:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 20:50:29,011 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 20:50:29,012 INFO L285 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-19 20:50:29,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:50:29 BoogieIcfgContainer [2019-11-19 20:50:29,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 20:50:29,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 20:50:29,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 20:50:29,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 20:50:29,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:50:28" (1/3) ... [2019-11-19 20:50:29,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e63f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:50:29, skipping insertion in model container [2019-11-19 20:50:29,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:28" (2/3) ... [2019-11-19 20:50:29,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e63f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:50:29, skipping insertion in model container [2019-11-19 20:50:29,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:50:29" (3/3) ... [2019-11-19 20:50:29,022 INFO L109 eAbstractionObserver]: Analyzing ICFG sina4f.c [2019-11-19 20:50:29,044 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 20:50:29,061 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 20:50:29,091 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 20:50:29,126 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 20:50:29,127 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 20:50:29,127 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 20:50:29,127 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 20:50:29,127 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 20:50:29,127 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 20:50:29,127 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 20:50:29,128 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 20:50:29,143 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-19 20:50:29,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-19 20:50:29,150 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:50:29,151 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:50:29,152 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:50:29,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:50:29,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1543917039, now seen corresponding path program 1 times [2019-11-19 20:50:29,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:50:29,168 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420971746] [2019-11-19 20:50:29,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:50:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:50:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:50:29,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420971746] [2019-11-19 20:50:29,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:50:29,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 20:50:29,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845423725] [2019-11-19 20:50:29,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 20:50:29,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:50:29,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 20:50:29,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 20:50:29,342 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-19 20:50:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:50:29,360 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2019-11-19 20:50:29,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 20:50:29,362 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-11-19 20:50:29,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:50:29,374 INFO L225 Difference]: With dead ends: 45 [2019-11-19 20:50:29,374 INFO L226 Difference]: Without dead ends: 21 [2019-11-19 20:50:29,378 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 20:50:29,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-19 20:50:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-19 20:50:29,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-19 20:50:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-19 20:50:29,417 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2019-11-19 20:50:29,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:50:29,417 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-19 20:50:29,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 20:50:29,418 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-19 20:50:29,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-19 20:50:29,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:50:29,419 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:50:29,419 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:50:29,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:50:29,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1392318587, now seen corresponding path program 1 times [2019-11-19 20:50:29,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:50:29,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994927488] [2019-11-19 20:50:29,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:50:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:50:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:50:29,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994927488] [2019-11-19 20:50:29,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:50:29,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 20:50:29,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858534077] [2019-11-19 20:50:29,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 20:50:29,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:50:29,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 20:50:29,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 20:50:29,520 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-11-19 20:50:29,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:50:29,575 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2019-11-19 20:50:29,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 20:50:29,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-11-19 20:50:29,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:50:29,577 INFO L225 Difference]: With dead ends: 39 [2019-11-19 20:50:29,577 INFO L226 Difference]: Without dead ends: 23 [2019-11-19 20:50:29,578 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 20:50:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-19 20:50:29,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-19 20:50:29,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-19 20:50:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-19 20:50:29,583 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2019-11-19 20:50:29,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:50:29,584 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-19 20:50:29,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 20:50:29,584 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-19 20:50:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-19 20:50:29,585 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:50:29,585 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:50:29,585 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:50:29,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:50:29,585 INFO L82 PathProgramCache]: Analyzing trace with hash -298812061, now seen corresponding path program 1 times [2019-11-19 20:50:29,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:50:29,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346004265] [2019-11-19 20:50:29,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:50:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:50:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 20:50:29,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346004265] [2019-11-19 20:50:29,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:50:29,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 20:50:29,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775370942] [2019-11-19 20:50:29,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 20:50:29,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:50:29,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 20:50:29,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 20:50:29,658 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2019-11-19 20:50:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:50:29,751 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2019-11-19 20:50:29,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 20:50:29,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-19 20:50:29,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:50:29,753 INFO L225 Difference]: With dead ends: 48 [2019-11-19 20:50:29,753 INFO L226 Difference]: Without dead ends: 35 [2019-11-19 20:50:29,754 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 20:50:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-19 20:50:29,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2019-11-19 20:50:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-19 20:50:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-11-19 20:50:29,760 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2019-11-19 20:50:29,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:50:29,760 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-11-19 20:50:29,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 20:50:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-11-19 20:50:29,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-19 20:50:29,762 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:50:29,762 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:50:29,763 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:50:29,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:50:29,764 INFO L82 PathProgramCache]: Analyzing trace with hash -312639363, now seen corresponding path program 1 times [2019-11-19 20:50:29,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:50:29,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165275897] [2019-11-19 20:50:29,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:50:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:50:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:50:29,980 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:50:29,981 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 20:50:30,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:50:30 BoogieIcfgContainer [2019-11-19 20:50:30,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 20:50:30,024 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 20:50:30,024 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 20:50:30,024 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 20:50:30,025 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:50:29" (3/4) ... [2019-11-19 20:50:30,028 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 20:50:30,087 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 20:50:30,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 20:50:30,091 INFO L168 Benchmark]: Toolchain (without parser) took 2032.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -115.7 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:30,091 INFO L168 Benchmark]: CDTParser took 0.19 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. [2019-11-19 20:50:30,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 506.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 961.7 MB in the beginning and 1.2 GB in the end (delta: -201.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:30,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:30,093 INFO L168 Benchmark]: Boogie Preprocessor took 29.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 20:50:30,094 INFO L168 Benchmark]: RCFGBuilder took 346.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 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. [2019-11-19 20:50:30,095 INFO L168 Benchmark]: TraceAbstraction took 1008.31 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: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:30,095 INFO L168 Benchmark]: Witness Printer took 64.13 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:30,099 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 506.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 961.7 MB in the beginning and 1.2 GB in the end (delta: -201.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 71.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 346.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 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. * TraceAbstraction took 1008.31 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: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. * Witness Printer took 64.13 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long sum[1]; [L24] long long *a = malloc(sizeof(long long)*N); [L25] long long *b = malloc(sizeof(long long)*N); [L27] sum[0] = 0 [L28] i=0 VAL [N=1] [L28] COND TRUE i