./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/condgf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c 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/condgf.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 6d41f74949d7e15e9e2b5b7d1dc87eb4599a99e6 ....................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-11-28 15:33:20,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 15:33:20,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 15:33:20,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 15:33:20,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 15:33:20,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 15:33:20,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 15:33:20,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 15:33:20,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 15:33:20,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 15:33:20,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 15:33:20,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 15:33:20,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 15:33:20,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 15:33:20,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 15:33:20,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 15:33:20,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 15:33:20,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 15:33:20,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 15:33:20,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 15:33:20,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 15:33:20,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 15:33:20,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 15:33:20,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 15:33:20,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 15:33:20,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 15:33:20,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 15:33:20,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 15:33:20,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 15:33:20,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 15:33:20,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 15:33:20,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 15:33:20,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 15:33:20,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 15:33:20,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 15:33:20,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 15:33:20,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 15:33:20,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 15:33:20,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 15:33:20,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 15:33:20,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 15:33:20,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 15:33:20,159 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 15:33:20,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 15:33:20,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 15:33:20,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 15:33:20,161 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 15:33:20,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 15:33:20,162 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 15:33:20,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 15:33:20,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 15:33:20,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 15:33:20,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 15:33:20,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 15:33:20,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 15:33:20,164 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 15:33:20,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 15:33:20,165 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 15:33:20,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 15:33:20,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 15:33:20,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 15:33:20,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 15:33:20,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 15:33:20,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 15:33:20,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 15:33:20,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 15:33:20,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 15:33:20,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 15:33:20,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 15:33:20,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 15:33:20,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 15:33:20,169 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 -> 6d41f74949d7e15e9e2b5b7d1dc87eb4599a99e6 [2019-11-28 15:33:20,554 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 15:33:20,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 15:33:20,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 15:33:20,581 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 15:33:20,581 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 15:33:20,583 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condgf.c [2019-11-28 15:33:20,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3870b5619/c8f97541118040b3a60ab634e528445f/FLAG7bdba5fe7 [2019-11-28 15:33:21,146 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 15:33:21,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condgf.c [2019-11-28 15:33:21,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3870b5619/c8f97541118040b3a60ab634e528445f/FLAG7bdba5fe7 [2019-11-28 15:33:21,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3870b5619/c8f97541118040b3a60ab634e528445f [2019-11-28 15:33:21,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 15:33:21,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 15:33:21,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 15:33:21,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 15:33:21,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 15:33:21,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:33:21" (1/1) ... [2019-11-28 15:33:21,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33144cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21, skipping insertion in model container [2019-11-28 15:33:21,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:33:21" (1/1) ... [2019-11-28 15:33:21,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 15:33:21,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 15:33:21,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:33:21,757 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 15:33:21,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:33:21,857 INFO L208 MainTranslator]: Completed translation [2019-11-28 15:33:21,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21 WrapperNode [2019-11-28 15:33:21,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 15:33:21,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 15:33:21,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 15:33:21,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 15:33:21,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21" (1/1) ... [2019-11-28 15:33:21,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21" (1/1) ... [2019-11-28 15:33:21,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 15:33:21,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 15:33:21,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 15:33:21,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 15:33:21,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21" (1/1) ... [2019-11-28 15:33:21,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21" (1/1) ... [2019-11-28 15:33:21,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21" (1/1) ... [2019-11-28 15:33:21,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21" (1/1) ... [2019-11-28 15:33:21,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21" (1/1) ... [2019-11-28 15:33:21,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21" (1/1) ... [2019-11-28 15:33:21,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21" (1/1) ... [2019-11-28 15:33:21,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 15:33:21,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 15:33:21,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 15:33:21,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 15:33:21,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21" (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 [2019-11-28 15:33:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 15:33:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 15:33:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 15:33:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 15:33:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 15:33:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 15:33:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 15:33:22,265 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 15:33:22,266 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-28 15:33:22,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:33:22 BoogieIcfgContainer [2019-11-28 15:33:22,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 15:33:22,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 15:33:22,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 15:33:22,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 15:33:22,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:33:21" (1/3) ... [2019-11-28 15:33:22,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5d2095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:33:22, skipping insertion in model container [2019-11-28 15:33:22,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:33:21" (2/3) ... [2019-11-28 15:33:22,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5d2095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:33:22, skipping insertion in model container [2019-11-28 15:33:22,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:33:22" (3/3) ... [2019-11-28 15:33:22,280 INFO L109 eAbstractionObserver]: Analyzing ICFG condgf.c [2019-11-28 15:33:22,294 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 15:33:22,302 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 15:33:22,322 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 15:33:22,349 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 15:33:22,349 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 15:33:22,350 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 15:33:22,350 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 15:33:22,350 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 15:33:22,350 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 15:33:22,351 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 15:33:22,351 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 15:33:22,368 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-28 15:33:22,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 15:33:22,375 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:33:22,376 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:33:22,376 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:33:22,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:33:22,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1564013430, now seen corresponding path program 1 times [2019-11-28 15:33:22,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:33:22,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821997788] [2019-11-28 15:33:22,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:33:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:33:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:33:22,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821997788] [2019-11-28 15:33:22,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:33:22,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 15:33:22,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585580484] [2019-11-28 15:33:22,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 15:33:22,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:33:22,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 15:33:22,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 15:33:22,559 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-11-28 15:33:22,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:33:22,580 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2019-11-28 15:33:22,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 15:33:22,582 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-28 15:33:22,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:33:22,592 INFO L225 Difference]: With dead ends: 41 [2019-11-28 15:33:22,593 INFO L226 Difference]: Without dead ends: 19 [2019-11-28 15:33:22,596 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 [2019-11-28 15:33:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-28 15:33:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-28 15:33:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 15:33:22,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-11-28 15:33:22,639 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2019-11-28 15:33:22,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:33:22,640 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-11-28 15:33:22,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 15:33:22,640 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-11-28 15:33:22,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 15:33:22,641 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:33:22,642 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:33:22,642 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:33:22,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:33:22,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1516375201, now seen corresponding path program 1 times [2019-11-28 15:33:22,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:33:22,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719118650] [2019-11-28 15:33:22,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:33:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:33:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:33:22,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719118650] [2019-11-28 15:33:22,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:33:22,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 15:33:22,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792931584] [2019-11-28 15:33:22,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 15:33:22,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:33:22,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 15:33:22,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 15:33:22,807 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2019-11-28 15:33:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:33:22,903 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2019-11-28 15:33:22,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 15:33:22,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-28 15:33:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:33:22,905 INFO L225 Difference]: With dead ends: 35 [2019-11-28 15:33:22,905 INFO L226 Difference]: Without dead ends: 21 [2019-11-28 15:33:22,906 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 [2019-11-28 15:33:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-28 15:33:22,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-28 15:33:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 15:33:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-28 15:33:22,913 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2019-11-28 15:33:22,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:33:22,913 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-28 15:33:22,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 15:33:22,913 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-28 15:33:22,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 15:33:22,914 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:33:22,914 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:33:22,915 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:33:22,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:33:22,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1045653693, now seen corresponding path program 1 times [2019-11-28 15:33:22,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:33:22,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389252473] [2019-11-28 15:33:22,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:33:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:33:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 15:33:22,988 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389252473] [2019-11-28 15:33:22,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:33:22,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 15:33:22,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442778525] [2019-11-28 15:33:22,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 15:33:22,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:33:22,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 15:33:22,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 15:33:22,995 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 4 states. [2019-11-28 15:33:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:33:23,074 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-11-28 15:33:23,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 15:33:23,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 15:33:23,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:33:23,076 INFO L225 Difference]: With dead ends: 43 [2019-11-28 15:33:23,076 INFO L226 Difference]: Without dead ends: 32 [2019-11-28 15:33:23,077 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 [2019-11-28 15:33:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-28 15:33:23,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2019-11-28 15:33:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 15:33:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-28 15:33:23,083 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2019-11-28 15:33:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:33:23,084 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-28 15:33:23,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 15:33:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-28 15:33:23,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 15:33:23,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:33:23,085 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:33:23,086 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:33:23,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:33:23,087 INFO L82 PathProgramCache]: Analyzing trace with hash -2094910850, now seen corresponding path program 1 times [2019-11-28 15:33:23,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:33:23,087 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413442004] [2019-11-28 15:33:23,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:33:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:33:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:33:23,267 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 15:33:23,268 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 15:33:23,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:33:23 BoogieIcfgContainer [2019-11-28 15:33:23,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 15:33:23,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 15:33:23,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 15:33:23,309 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 15:33:23,310 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:33:22" (3/4) ... [2019-11-28 15:33:23,312 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 15:33:23,368 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 15:33:23,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 15:33:23,372 INFO L168 Benchmark]: Toolchain (without parser) took 1888.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -111.8 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:23,372 INFO L168 Benchmark]: CDTParser took 0.83 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. [2019-11-28 15:33:23,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 960.4 MB in the beginning and 1.2 GB in the end (delta: -192.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:23,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.57 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: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:23,375 INFO L168 Benchmark]: Boogie Preprocessor took 31.11 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. [2019-11-28 15:33:23,375 INFO L168 Benchmark]: RCFGBuilder took 332.59 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:23,376 INFO L168 Benchmark]: TraceAbstraction took 1038.80 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: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 11.5 GB. [2019-11-28 15:33:23,377 INFO L168 Benchmark]: Witness Printer took 60.21 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. [2019-11-28 15:33:23,381 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 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 375.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 960.4 MB in the beginning and 1.2 GB in the end (delta: -192.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.57 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: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 332.59 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1038.80 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: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 11.5 GB. * Witness Printer took 60.21 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] sum[0] = 0 [L27] i=0 VAL [N=1] [L27] COND TRUE i