./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs5f.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/array-fpi/brs5f.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 3c634baad78572eed4cece62ab3fbed72feb7f15 ......................................................................................................................................................................................................................................................................................................................................................................... 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 22:28:40,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 22:28:40,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 22:28:40,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 22:28:40,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 22:28:40,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 22:28:40,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 22:28:40,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 22:28:40,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 22:28:40,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 22:28:40,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 22:28:40,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 22:28:40,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 22:28:40,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 22:28:40,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 22:28:40,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 22:28:40,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 22:28:40,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 22:28:40,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 22:28:40,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 22:28:40,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 22:28:40,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 22:28:40,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 22:28:40,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 22:28:40,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 22:28:40,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 22:28:40,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 22:28:40,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 22:28:40,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 22:28:40,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 22:28:40,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 22:28:40,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 22:28:40,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 22:28:40,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 22:28:40,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 22:28:40,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 22:28:40,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 22:28:40,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 22:28:40,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 22:28:40,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 22:28:40,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 22:28:40,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 22:28:40,811 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 22:28:40,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 22:28:40,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 22:28:40,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 22:28:40,818 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 22:28:40,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 22:28:40,818 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 22:28:40,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 22:28:40,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 22:28:40,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 22:28:40,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 22:28:40,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 22:28:40,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 22:28:40,822 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 22:28:40,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 22:28:40,822 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 22:28:40,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 22:28:40,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 22:28:40,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 22:28:40,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 22:28:40,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 22:28:40,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:28:40,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 22:28:40,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 22:28:40,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 22:28:40,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 22:28:40,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 22:28:40,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 22:28:40,829 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 -> 3c634baad78572eed4cece62ab3fbed72feb7f15 [2019-11-27 22:28:41,158 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 22:28:41,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 22:28:41,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 22:28:41,177 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 22:28:41,177 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 22:28:41,178 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs5f.c [2019-11-27 22:28:41,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4c6ec976/056a1213c27c4451a8b3b4d255474c0f/FLAGc6c6b1120 [2019-11-27 22:28:41,711 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 22:28:41,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs5f.c [2019-11-27 22:28:41,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4c6ec976/056a1213c27c4451a8b3b4d255474c0f/FLAGc6c6b1120 [2019-11-27 22:28:42,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4c6ec976/056a1213c27c4451a8b3b4d255474c0f [2019-11-27 22:28:42,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 22:28:42,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 22:28:42,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 22:28:42,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 22:28:42,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 22:28:42,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:28:42" (1/1) ... [2019-11-27 22:28:42,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1798a1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42, skipping insertion in model container [2019-11-27 22:28:42,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:28:42" (1/1) ... [2019-11-27 22:28:42,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 22:28:42,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 22:28:42,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:28:42,329 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 22:28:42,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:28:42,362 INFO L208 MainTranslator]: Completed translation [2019-11-27 22:28:42,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42 WrapperNode [2019-11-27 22:28:42,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 22:28:42,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 22:28:42,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 22:28:42,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 22:28:42,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42" (1/1) ... [2019-11-27 22:28:42,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42" (1/1) ... [2019-11-27 22:28:42,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 22:28:42,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 22:28:42,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 22:28:42,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 22:28:42,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42" (1/1) ... [2019-11-27 22:28:42,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42" (1/1) ... [2019-11-27 22:28:42,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42" (1/1) ... [2019-11-27 22:28:42,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42" (1/1) ... [2019-11-27 22:28:42,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42" (1/1) ... [2019-11-27 22:28:42,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42" (1/1) ... [2019-11-27 22:28:42,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42" (1/1) ... [2019-11-27 22:28:42,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 22:28:42,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 22:28:42,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 22:28:42,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 22:28:42,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42" (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 22:28:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 22:28:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 22:28:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 22:28:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 22:28:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 22:28:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 22:28:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 22:28:42,796 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 22:28:42,796 INFO L297 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-27 22:28:42,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:28:42 BoogieIcfgContainer [2019-11-27 22:28:42,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 22:28:42,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 22:28:42,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 22:28:42,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 22:28:42,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 10:28:42" (1/3) ... [2019-11-27 22:28:42,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0e84ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:28:42, skipping insertion in model container [2019-11-27 22:28:42,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:42" (2/3) ... [2019-11-27 22:28:42,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0e84ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:28:42, skipping insertion in model container [2019-11-27 22:28:42,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:28:42" (3/3) ... [2019-11-27 22:28:42,813 INFO L109 eAbstractionObserver]: Analyzing ICFG brs5f.c [2019-11-27 22:28:42,827 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 22:28:42,840 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 22:28:42,870 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 22:28:42,898 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 22:28:42,898 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 22:28:42,899 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 22:28:42,899 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 22:28:42,899 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 22:28:42,899 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 22:28:42,900 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 22:28:42,900 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 22:28:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-27 22:28:42,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 22:28:42,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:28:42,920 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:28:42,921 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:28:42,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:28:42,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1623807605, now seen corresponding path program 1 times [2019-11-27 22:28:42,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:28:42,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282425014] [2019-11-27 22:28:42,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:28:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:28:43,064 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 22:28:43,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282425014] [2019-11-27 22:28:43,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:28:43,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 22:28:43,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542621530] [2019-11-27 22:28:43,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 22:28:43,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:28:43,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 22:28:43,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:28:43,089 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-27 22:28:43,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:28:43,107 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2019-11-27 22:28:43,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 22:28:43,109 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-27 22:28:43,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:28:43,119 INFO L225 Difference]: With dead ends: 30 [2019-11-27 22:28:43,119 INFO L226 Difference]: Without dead ends: 14 [2019-11-27 22:28:43,123 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 [2019-11-27 22:28:43,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-27 22:28:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-27 22:28:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-27 22:28:43,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-27 22:28:43,153 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2019-11-27 22:28:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:28:43,154 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-27 22:28:43,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 22:28:43,154 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-27 22:28:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 22:28:43,155 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:28:43,155 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:28:43,156 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:28:43,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:28:43,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1308886944, now seen corresponding path program 1 times [2019-11-27 22:28:43,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:28:43,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799024476] [2019-11-27 22:28:43,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:28:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:28:43,243 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 22:28:43,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799024476] [2019-11-27 22:28:43,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:28:43,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 22:28:43,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300551188] [2019-11-27 22:28:43,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 22:28:43,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:28:43,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 22:28:43,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:28:43,247 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2019-11-27 22:28:43,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:28:43,323 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2019-11-27 22:28:43,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 22:28:43,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-27 22:28:43,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:28:43,325 INFO L225 Difference]: With dead ends: 28 [2019-11-27 22:28:43,325 INFO L226 Difference]: Without dead ends: 17 [2019-11-27 22:28:43,326 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 [2019-11-27 22:28:43,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-27 22:28:43,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-27 22:28:43,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-27 22:28:43,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-27 22:28:43,331 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2019-11-27 22:28:43,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:28:43,332 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-27 22:28:43,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 22:28:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-27 22:28:43,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-27 22:28:43,333 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:28:43,333 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:28:43,334 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:28:43,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:28:43,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1738269227, now seen corresponding path program 1 times [2019-11-27 22:28:43,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:28:43,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194540029] [2019-11-27 22:28:43,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:28:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:28:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-27 22:28:43,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194540029] [2019-11-27 22:28:43,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:28:43,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 22:28:43,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254014977] [2019-11-27 22:28:43,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 22:28:43,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:28:43,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 22:28:43,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 22:28:43,417 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-11-27 22:28:43,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:28:43,479 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-11-27 22:28:43,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 22:28:43,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-27 22:28:43,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:28:43,481 INFO L225 Difference]: With dead ends: 27 [2019-11-27 22:28:43,481 INFO L226 Difference]: Without dead ends: 20 [2019-11-27 22:28:43,482 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 [2019-11-27 22:28:43,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-27 22:28:43,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-27 22:28:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-27 22:28:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-27 22:28:43,487 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2019-11-27 22:28:43,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:28:43,487 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-27 22:28:43,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 22:28:43,488 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-27 22:28:43,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-27 22:28:43,488 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:28:43,488 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:28:43,489 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:28:43,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:28:43,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1896871737, now seen corresponding path program 1 times [2019-11-27 22:28:43,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:28:43,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353090135] [2019-11-27 22:28:43,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:28:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:28:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:28:43,571 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 22:28:43,571 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 22:28:43,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 10:28:43 BoogieIcfgContainer [2019-11-27 22:28:43,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 22:28:43,604 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 22:28:43,604 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 22:28:43,605 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 22:28:43,605 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:28:42" (3/4) ... [2019-11-27 22:28:43,608 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 22:28:43,661 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 22:28:43,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 22:28:43,667 INFO L168 Benchmark]: Toolchain (without parser) took 1591.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 959.0 MB in the beginning and 1.0 GB in the end (delta: -73.3 MB). Peak memory consumption was 48.9 MB. Max. memory is 11.5 GB. [2019-11-27 22:28:43,667 INFO L168 Benchmark]: CDTParser took 0.24 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 22:28:43,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.92 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 948.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:28:43,669 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -170.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:28:43,671 INFO L168 Benchmark]: Boogie Preprocessor took 29.78 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. [2019-11-27 22:28:43,673 INFO L168 Benchmark]: RCFGBuilder took 294.20 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2019-11-27 22:28:43,676 INFO L168 Benchmark]: TraceAbstraction took 801.37 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: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. [2019-11-27 22:28:43,677 INFO L168 Benchmark]: Witness Printer took 56.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:28:43,685 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 287.92 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 948.3 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 110.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -170.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.78 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. * RCFGBuilder took 294.20 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 801.37 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: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. * Witness Printer took 56.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 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: 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] int *a = malloc(sizeof(int)*N); [L26] i=0 VAL [N=1] [L26] COND TRUE i