./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs4f.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/brs4f.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 01fb7ad7b500b521dd80901666e1ae1def4f57f3 ......................................................................................................................................................................................................................................................................................................................................................................... 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 22:28:39,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 22:28:39,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 22:28:39,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 22:28:39,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 22:28:39,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 22:28:39,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 22:28:39,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 22:28:39,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 22:28:39,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 22:28:39,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 22:28:39,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 22:28:39,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 22:28:39,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 22:28:39,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 22:28:39,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 22:28:39,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 22:28:39,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 22:28:39,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 22:28:39,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 22:28:39,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 22:28:39,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 22:28:39,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 22:28:39,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 22:28:39,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 22:28:39,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 22:28:39,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 22:28:39,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 22:28:39,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 22:28:39,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 22:28:39,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 22:28:39,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 22:28:39,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 22:28:39,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 22:28:39,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 22:28:39,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 22:28:39,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 22:28:39,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 22:28:39,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 22:28:39,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 22:28:39,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 22:28:39,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 22:28:39,144 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 22:28:39,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 22:28:39,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 22:28:39,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 22:28:39,146 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 22:28:39,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 22:28:39,147 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 22:28:39,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 22:28:39,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 22:28:39,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 22:28:39,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 22:28:39,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 22:28:39,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 22:28:39,148 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 22:28:39,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 22:28:39,149 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 22:28:39,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 22:28:39,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 22:28:39,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 22:28:39,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 22:28:39,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 22:28:39,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:28:39,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 22:28:39,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 22:28:39,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 22:28:39,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 22:28:39,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 22:28:39,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 22:28:39,153 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 -> 01fb7ad7b500b521dd80901666e1ae1def4f57f3 [2019-11-27 22:28:39,483 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 22:28:39,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 22:28:39,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 22:28:39,501 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 22:28:39,502 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 22:28:39,502 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs4f.c [2019-11-27 22:28:39,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c855eaecb/1a7df34acbec443f9b13524b8a045988/FLAGd6f9c8b8c [2019-11-27 22:28:40,032 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 22:28:40,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs4f.c [2019-11-27 22:28:40,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c855eaecb/1a7df34acbec443f9b13524b8a045988/FLAGd6f9c8b8c [2019-11-27 22:28:40,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c855eaecb/1a7df34acbec443f9b13524b8a045988 [2019-11-27 22:28:40,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 22:28:40,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 22:28:40,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 22:28:40,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 22:28:40,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 22:28:40,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:28:40" (1/1) ... [2019-11-27 22:28:40,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b8413c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40, skipping insertion in model container [2019-11-27 22:28:40,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:28:40" (1/1) ... [2019-11-27 22:28:40,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 22:28:40,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 22:28:40,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:28:40,692 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 22:28:40,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:28:40,730 INFO L208 MainTranslator]: Completed translation [2019-11-27 22:28:40,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40 WrapperNode [2019-11-27 22:28:40,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 22:28:40,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 22:28:40,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 22:28:40,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 22:28:40,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40" (1/1) ... [2019-11-27 22:28:40,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40" (1/1) ... [2019-11-27 22:28:40,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 22:28:40,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 22:28:40,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 22:28:40,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 22:28:40,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40" (1/1) ... [2019-11-27 22:28:40,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40" (1/1) ... [2019-11-27 22:28:40,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40" (1/1) ... [2019-11-27 22:28:40,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40" (1/1) ... [2019-11-27 22:28:40,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40" (1/1) ... [2019-11-27 22:28:40,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40" (1/1) ... [2019-11-27 22:28:40,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40" (1/1) ... [2019-11-27 22:28:40,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 22:28:40,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 22:28:40,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 22:28:40,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 22:28:40,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40" (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 22:28:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 22:28:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 22:28:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 22:28:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 22:28:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 22:28:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 22:28:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 22:28:41,148 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 22:28:41,149 INFO L297 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-27 22:28:41,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:28:41 BoogieIcfgContainer [2019-11-27 22:28:41,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 22:28:41,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 22:28:41,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 22:28:41,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 22:28:41,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 10:28:40" (1/3) ... [2019-11-27 22:28:41,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef2f9f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:28:41, skipping insertion in model container [2019-11-27 22:28:41,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:28:40" (2/3) ... [2019-11-27 22:28:41,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef2f9f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:28:41, skipping insertion in model container [2019-11-27 22:28:41,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:28:41" (3/3) ... [2019-11-27 22:28:41,158 INFO L109 eAbstractionObserver]: Analyzing ICFG brs4f.c [2019-11-27 22:28:41,169 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 22:28:41,177 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 22:28:41,191 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 22:28:41,227 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 22:28:41,227 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 22:28:41,228 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 22:28:41,228 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 22:28:41,228 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 22:28:41,228 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 22:28:41,229 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 22:28:41,229 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 22:28:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-27 22:28:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 22:28:41,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:28:41,263 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:28:41,272 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:28:41,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:28:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1623807605, now seen corresponding path program 1 times [2019-11-27 22:28:41,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:28:41,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828832418] [2019-11-27 22:28:41,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:28:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:28:41,417 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 22:28:41,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828832418] [2019-11-27 22:28:41,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:28:41,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 22:28:41,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533111190] [2019-11-27 22:28:41,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 22:28:41,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:28:41,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 22:28:41,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:28:41,438 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-27 22:28:41,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:28:41,452 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2019-11-27 22:28:41,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 22:28:41,454 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-27 22:28:41,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:28:41,462 INFO L225 Difference]: With dead ends: 30 [2019-11-27 22:28:41,462 INFO L226 Difference]: Without dead ends: 14 [2019-11-27 22:28:41,465 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 22:28:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-27 22:28:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-27 22:28:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-27 22:28:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-27 22:28:41,493 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2019-11-27 22:28:41,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:28:41,494 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-27 22:28:41,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 22:28:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-27 22:28:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 22:28:41,495 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:28:41,495 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:28:41,495 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:28:41,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:28:41,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1308886944, now seen corresponding path program 1 times [2019-11-27 22:28:41,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:28:41,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144007280] [2019-11-27 22:28:41,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:28:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:28:41,573 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 22:28:41,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144007280] [2019-11-27 22:28:41,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:28:41,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 22:28:41,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106727733] [2019-11-27 22:28:41,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 22:28:41,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:28:41,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 22:28:41,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:28:41,579 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2019-11-27 22:28:41,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:28:41,648 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2019-11-27 22:28:41,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 22:28:41,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-27 22:28:41,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:28:41,650 INFO L225 Difference]: With dead ends: 28 [2019-11-27 22:28:41,650 INFO L226 Difference]: Without dead ends: 17 [2019-11-27 22:28:41,652 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 22:28:41,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-27 22:28:41,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-27 22:28:41,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-27 22:28:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-27 22:28:41,657 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2019-11-27 22:28:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:28:41,657 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-27 22:28:41,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 22:28:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-27 22:28:41,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-27 22:28:41,659 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:28:41,659 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:28:41,659 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:28:41,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:28:41,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1738269227, now seen corresponding path program 1 times [2019-11-27 22:28:41,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:28:41,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84864591] [2019-11-27 22:28:41,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:28:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:28:41,757 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 22:28:41,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84864591] [2019-11-27 22:28:41,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:28:41,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 22:28:41,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430275713] [2019-11-27 22:28:41,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 22:28:41,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:28:41,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 22:28:41,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 22:28:41,760 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-11-27 22:28:41,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:28:41,813 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-11-27 22:28:41,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 22:28:41,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-27 22:28:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:28:41,814 INFO L225 Difference]: With dead ends: 27 [2019-11-27 22:28:41,814 INFO L226 Difference]: Without dead ends: 20 [2019-11-27 22:28:41,815 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 22:28:41,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-27 22:28:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-27 22:28:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-27 22:28:41,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-27 22:28:41,821 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2019-11-27 22:28:41,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:28:41,821 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-27 22:28:41,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 22:28:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-27 22:28:41,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-27 22:28:41,822 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:28:41,823 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:28:41,823 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:28:41,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:28:41,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1896871737, now seen corresponding path program 1 times [2019-11-27 22:28:41,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:28:41,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385424282] [2019-11-27 22:28:41,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:28:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:28:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:28:41,922 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 22:28:41,922 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 22:28:41,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 10:28:41 BoogieIcfgContainer [2019-11-27 22:28:41,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 22:28:41,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 22:28:41,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 22:28:41,953 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 22:28:41,954 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:28:41" (3/4) ... [2019-11-27 22:28:41,956 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 22:28:42,005 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 22:28:42,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 22:28:42,008 INFO L168 Benchmark]: Toolchain (without parser) took 1555.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -112.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 11.5 GB. [2019-11-27 22:28:42,009 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 22:28:42,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.29 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:28:42,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:28:42,011 INFO L168 Benchmark]: Boogie Preprocessor took 28.80 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-27 22:28:42,012 INFO L168 Benchmark]: RCFGBuilder took 292.19 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-27 22:28:42,013 INFO L168 Benchmark]: TraceAbstraction took 801.09 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: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. [2019-11-27 22:28:42,014 INFO L168 Benchmark]: Witness Printer took 53.01 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 22:28:42,018 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 278.29 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 96.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.80 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 292.19 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 801.09 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: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. * Witness Printer took 53.01 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. * 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