./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-ext-properties/simple-ext.i --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/list-ext-properties/simple-ext.i -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 e1c4f57eca82444dbac59d6fae1e4e6e28bb6c95 ............................................................................................................................................................................................................................................................................... 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 16:59:39,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:59:39,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:59:39,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:59:39,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:59:39,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:59:39,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:59:39,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:59:39,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:59:39,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:59:39,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:59:39,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:59:39,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:59:39,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:59:39,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:59:39,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:59:39,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:59:39,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:59:39,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:59:39,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:59:39,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:59:39,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:59:39,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:59:39,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:59:39,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:59:39,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:59:39,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:59:39,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:59:39,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:59:39,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:59:39,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:59:39,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:59:39,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:59:39,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:59:39,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:59:39,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:59:39,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:59:39,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:59:39,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:59:39,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:59:39,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:59:39,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:59:39,892 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:59:39,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:59:39,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:59:39,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:59:39,896 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:59:39,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:59:39,897 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:59:39,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:59:39,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:59:39,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:59:39,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:59:39,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:59:39,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:59:39,899 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:59:39,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:59:39,900 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:59:39,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:59:39,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:59:39,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:59:39,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:59:39,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:59:39,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:59:39,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:59:39,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:59:39,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:59:39,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:59:39,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:59:39,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:59:39,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:59:39,905 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 -> e1c4f57eca82444dbac59d6fae1e4e6e28bb6c95 [2019-11-28 16:59:40,228 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:59:40,241 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:59:40,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:59:40,246 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:59:40,247 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:59:40,248 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/simple-ext.i [2019-11-28 16:59:40,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372df6193/aa61cb753c8d4a9294ced29e1f33e8d6/FLAG154442e5f [2019-11-28 16:59:40,835 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:59:40,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/simple-ext.i [2019-11-28 16:59:40,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372df6193/aa61cb753c8d4a9294ced29e1f33e8d6/FLAG154442e5f [2019-11-28 16:59:41,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372df6193/aa61cb753c8d4a9294ced29e1f33e8d6 [2019-11-28 16:59:41,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:59:41,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:59:41,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:59:41,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:59:41,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:59:41,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:59:41" (1/1) ... [2019-11-28 16:59:41,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6033d41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41, skipping insertion in model container [2019-11-28 16:59:41,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:59:41" (1/1) ... [2019-11-28 16:59:41,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:59:41,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:59:41,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:59:41,645 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:59:41,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:59:41,746 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:59:41,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41 WrapperNode [2019-11-28 16:59:41,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:59:41,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:59:41,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:59:41,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:59:41,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41" (1/1) ... [2019-11-28 16:59:41,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41" (1/1) ... [2019-11-28 16:59:41,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:59:41,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:59:41,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:59:41,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:59:41,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41" (1/1) ... [2019-11-28 16:59:41,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41" (1/1) ... [2019-11-28 16:59:41,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41" (1/1) ... [2019-11-28 16:59:41,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41" (1/1) ... [2019-11-28 16:59:41,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41" (1/1) ... [2019-11-28 16:59:41,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41" (1/1) ... [2019-11-28 16:59:41,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41" (1/1) ... [2019-11-28 16:59:41,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:59:41,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:59:41,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:59:41,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:59:41,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41" (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 16:59:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:59:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:59:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 16:59:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 16:59:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 16:59:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:59:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:59:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:59:42,258 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:59:42,258 INFO L287 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-28 16:59:42,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:59:42 BoogieIcfgContainer [2019-11-28 16:59:42,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:59:42,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:59:42,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:59:42,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:59:42,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:59:41" (1/3) ... [2019-11-28 16:59:42,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb21d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:59:42, skipping insertion in model container [2019-11-28 16:59:42,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:41" (2/3) ... [2019-11-28 16:59:42,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb21d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:59:42, skipping insertion in model container [2019-11-28 16:59:42,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:59:42" (3/3) ... [2019-11-28 16:59:42,268 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2019-11-28 16:59:42,278 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:59:42,285 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:59:42,297 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:59:42,322 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:59:42,323 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:59:42,323 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:59:42,323 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:59:42,324 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:59:42,324 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:59:42,324 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:59:42,325 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:59:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-28 16:59:42,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:59:42,347 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:59:42,348 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:59:42,348 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:59:42,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:59:42,355 INFO L82 PathProgramCache]: Analyzing trace with hash 2119919114, now seen corresponding path program 1 times [2019-11-28 16:59:42,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:59:42,364 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247109393] [2019-11-28 16:59:42,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:59:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:59:42,499 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 16:59:42,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247109393] [2019-11-28 16:59:42,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:59:42,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:59:42,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877349543] [2019-11-28 16:59:42,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:59:42,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:59:42,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:59:42,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:59:42,525 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-11-28 16:59:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:59:42,542 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2019-11-28 16:59:42,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:59:42,543 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-28 16:59:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:59:42,551 INFO L225 Difference]: With dead ends: 35 [2019-11-28 16:59:42,552 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 16:59:42,555 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 16:59:42,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 16:59:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 16:59:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 16:59:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-28 16:59:42,585 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2019-11-28 16:59:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:59:42,585 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-28 16:59:42,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:59:42,586 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-28 16:59:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:59:42,586 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:59:42,587 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:59:42,587 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:59:42,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:59:42,588 INFO L82 PathProgramCache]: Analyzing trace with hash -624122565, now seen corresponding path program 1 times [2019-11-28 16:59:42,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:59:42,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682607647] [2019-11-28 16:59:42,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:59:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:59:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:59:42,673 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:59:42,673 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:59:42,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:59:42 BoogieIcfgContainer [2019-11-28 16:59:42,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:59:42,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:59:42,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:59:42,701 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:59:42,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:59:42" (3/4) ... [2019-11-28 16:59:42,703 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:59:42,747 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:59:42,747 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:59:42,750 INFO L168 Benchmark]: Toolchain (without parser) took 1607.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -112.4 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:59:42,751 INFO L168 Benchmark]: CDTParser took 0.35 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 16:59:42,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:59:42,753 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:59:42,753 INFO L168 Benchmark]: Boogie Preprocessor took 31.87 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 16:59:42,754 INFO L168 Benchmark]: RCFGBuilder took 425.96 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: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:59:42,755 INFO L168 Benchmark]: TraceAbstraction took 439.12 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:59:42,756 INFO L168 Benchmark]: Witness Printer took 46.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:59:42,762 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 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 604.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.87 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 425.96 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: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 439.12 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * Witness Printer took 46.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] int i = 0; [L526] i < 30 && __VERIFIER_nondet_int() [L526] i < 30 && __VERIFIER_nondet_int() [L526] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L534] p->h = i [L535] p->n = 0 [L536] p = a [L537] i = 0 [L538] COND TRUE p!=0 [L539] EXPR p->h [L539] COND TRUE p->h != 1 [L540] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...