./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-properties/splice-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/list-properties/splice-1.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 336180afe1780bd2c4e24c39131e05a2fcb6ebf1 ...................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 21:13:54,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:13:54,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:13:54,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:13:54,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:13:54,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:13:54,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:13:54,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:13:54,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:13:54,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:13:54,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:13:54,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:13:54,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:13:54,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:13:54,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:13:54,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:13:54,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:13:54,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:13:54,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:13:54,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:13:54,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:13:54,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:13:54,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:13:54,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:13:54,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:13:54,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:13:54,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:13:54,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:13:54,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:13:54,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:13:54,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:13:54,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:13:54,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:13:54,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:13:54,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:13:54,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:13:54,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:13:54,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:13:54,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:13:54,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:13:54,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:13:54,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 21:13:54,345 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:13:54,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:13:54,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:13:54,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:13:54,347 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:13:54,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:13:54,348 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:13:54,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 21:13:54,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:13:54,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:13:54,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:13:54,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:13:54,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:13:54,350 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:13:54,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:13:54,351 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:13:54,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:13:54,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:13:54,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:13:54,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:13:54,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:13:54,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:13:54,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:13:54,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:13:54,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:13:54,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 21:13:54,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 21:13:54,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:13:54,354 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 -> 336180afe1780bd2c4e24c39131e05a2fcb6ebf1 [2019-11-19 21:13:54,750 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:13:54,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:13:54,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:13:54,768 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:13:54,769 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:13:54,769 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/splice-1.i [2019-11-19 21:13:54,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e993b3213/e2e63abbbafc444da489aaf04a7850fc/FLAG192550908 [2019-11-19 21:13:55,261 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:13:55,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i [2019-11-19 21:13:55,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e993b3213/e2e63abbbafc444da489aaf04a7850fc/FLAG192550908 [2019-11-19 21:13:55,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e993b3213/e2e63abbbafc444da489aaf04a7850fc [2019-11-19 21:13:55,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:13:55,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:13:55,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:13:55,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:13:55,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:13:55,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:55" (1/1) ... [2019-11-19 21:13:55,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76096d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:55, skipping insertion in model container [2019-11-19 21:13:55,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:55" (1/1) ... [2019-11-19 21:13:55,613 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:13:55,667 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:13:56,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:13:56,151 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:13:56,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:13:56,278 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:13:56,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56 WrapperNode [2019-11-19 21:13:56,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:13:56,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:13:56,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:13:56,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:13:56,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56" (1/1) ... [2019-11-19 21:13:56,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56" (1/1) ... [2019-11-19 21:13:56,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:13:56,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:13:56,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:13:56,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:13:56,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56" (1/1) ... [2019-11-19 21:13:56,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56" (1/1) ... [2019-11-19 21:13:56,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56" (1/1) ... [2019-11-19 21:13:56,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56" (1/1) ... [2019-11-19 21:13:56,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56" (1/1) ... [2019-11-19 21:13:56,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56" (1/1) ... [2019-11-19 21:13:56,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56" (1/1) ... [2019-11-19 21:13:56,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:13:56,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:13:56,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:13:56,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:13:56,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:13:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 21:13:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 21:13:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 21:13:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 21:13:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 21:13:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:13:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:13:56,786 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:13:56,786 INFO L285 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-19 21:13:56,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:56 BoogieIcfgContainer [2019-11-19 21:13:56,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:13:56,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:13:56,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:13:56,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:13:56,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:13:55" (1/3) ... [2019-11-19 21:13:56,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9c3048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:13:56, skipping insertion in model container [2019-11-19 21:13:56,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56" (2/3) ... [2019-11-19 21:13:56,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9c3048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:13:56, skipping insertion in model container [2019-11-19 21:13:56,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:56" (3/3) ... [2019-11-19 21:13:56,796 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2019-11-19 21:13:56,805 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:13:56,812 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 21:13:56,823 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 21:13:56,841 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:13:56,841 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:13:56,842 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:13:56,842 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:13:56,842 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:13:56,842 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:13:56,843 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:13:56,843 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:13:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-19 21:13:56,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 21:13:56,864 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:56,865 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:56,865 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:56,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:56,872 INFO L82 PathProgramCache]: Analyzing trace with hash -427823588, now seen corresponding path program 1 times [2019-11-19 21:13:56,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:13:56,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054201250] [2019-11-19 21:13:56,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:13:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:13:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:57,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054201250] [2019-11-19 21:13:57,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:13:57,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 21:13:57,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199560747] [2019-11-19 21:13:57,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 21:13:57,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:13:57,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 21:13:57,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:13:57,030 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-11-19 21:13:57,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:13:57,045 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2019-11-19 21:13:57,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 21:13:57,047 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-19 21:13:57,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:13:57,055 INFO L225 Difference]: With dead ends: 46 [2019-11-19 21:13:57,056 INFO L226 Difference]: Without dead ends: 23 [2019-11-19 21:13:57,059 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:13:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-19 21:13:57,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-19 21:13:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-19 21:13:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2019-11-19 21:13:57,089 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12 [2019-11-19 21:13:57,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:13:57,089 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2019-11-19 21:13:57,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 21:13:57,090 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2019-11-19 21:13:57,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-19 21:13:57,090 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:57,090 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:57,091 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:57,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:57,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1140031955, now seen corresponding path program 1 times [2019-11-19 21:13:57,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:13:57,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516355903] [2019-11-19 21:13:57,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:13:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:13:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:57,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516355903] [2019-11-19 21:13:57,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:13:57,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 21:13:57,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191678657] [2019-11-19 21:13:57,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 21:13:57,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:13:57,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 21:13:57,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 21:13:57,215 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand 4 states. [2019-11-19 21:13:57,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:13:57,299 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-11-19 21:13:57,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 21:13:57,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-19 21:13:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:13:57,301 INFO L225 Difference]: With dead ends: 40 [2019-11-19 21:13:57,301 INFO L226 Difference]: Without dead ends: 33 [2019-11-19 21:13:57,302 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 21:13:57,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-19 21:13:57,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-19 21:13:57,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-19 21:13:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-19 21:13:57,309 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2019-11-19 21:13:57,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:13:57,309 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-19 21:13:57,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 21:13:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-19 21:13:57,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-19 21:13:57,310 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:57,311 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:57,311 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:57,311 INFO L82 PathProgramCache]: Analyzing trace with hash 352372424, now seen corresponding path program 1 times [2019-11-19 21:13:57,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:13:57,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135794088] [2019-11-19 21:13:57,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:13:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:13:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:57,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135794088] [2019-11-19 21:13:57,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:13:57,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 21:13:57,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325961782] [2019-11-19 21:13:57,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 21:13:57,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:13:57,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 21:13:57,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 21:13:57,374 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 4 states. [2019-11-19 21:13:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:13:57,495 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2019-11-19 21:13:57,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 21:13:57,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-19 21:13:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:13:57,498 INFO L225 Difference]: With dead ends: 47 [2019-11-19 21:13:57,499 INFO L226 Difference]: Without dead ends: 39 [2019-11-19 21:13:57,499 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 21:13:57,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-19 21:13:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-11-19 21:13:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 21:13:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-11-19 21:13:57,507 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 16 [2019-11-19 21:13:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:13:57,507 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-11-19 21:13:57,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 21:13:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2019-11-19 21:13:57,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 21:13:57,508 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:57,508 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:57,509 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:57,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:57,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1051666739, now seen corresponding path program 1 times [2019-11-19 21:13:57,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:13:57,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478446678] [2019-11-19 21:13:57,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:13:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:13:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:57,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478446678] [2019-11-19 21:13:57,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:13:57,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-19 21:13:57,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754579479] [2019-11-19 21:13:57,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 21:13:57,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:13:57,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 21:13:57,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-19 21:13:57,613 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 6 states. [2019-11-19 21:13:57,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:13:57,746 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2019-11-19 21:13:57,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 21:13:57,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-19 21:13:57,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:13:57,748 INFO L225 Difference]: With dead ends: 70 [2019-11-19 21:13:57,748 INFO L226 Difference]: Without dead ends: 43 [2019-11-19 21:13:57,749 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-19 21:13:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-19 21:13:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-11-19 21:13:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-19 21:13:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2019-11-19 21:13:57,756 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 17 [2019-11-19 21:13:57,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:13:57,757 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2019-11-19 21:13:57,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 21:13:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2019-11-19 21:13:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-19 21:13:57,758 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:57,759 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:57,759 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:57,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:57,760 INFO L82 PathProgramCache]: Analyzing trace with hash -86042878, now seen corresponding path program 1 times [2019-11-19 21:13:57,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:13:57,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452935954] [2019-11-19 21:13:57,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:13:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:13:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:13:57,930 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 21:13:57,931 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 21:13:57,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:13:57 BoogieIcfgContainer [2019-11-19 21:13:57,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:13:57,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:13:57,974 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:13:57,975 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:13:57,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:56" (3/4) ... [2019-11-19 21:13:57,980 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 21:13:58,052 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 21:13:58,053 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:13:58,055 INFO L168 Benchmark]: Toolchain (without parser) took 2459.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 957.7 MB in the beginning and 980.3 MB in the end (delta: -22.6 MB). Peak memory consumption was 86.4 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:58,056 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. [2019-11-19 21:13:58,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -138.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:58,058 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:58,058 INFO L168 Benchmark]: Boogie Preprocessor took 33.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:13:58,059 INFO L168 Benchmark]: RCFGBuilder took 416.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:58,060 INFO L168 Benchmark]: TraceAbstraction took 1185.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 980.3 MB in the end (delta: 79.4 MB). Peak memory consumption was 79.4 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:58,061 INFO L168 Benchmark]: Witness Printer took 78.66 ms. Allocated memory is still 1.1 GB. Free memory is still 980.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:13:58,064 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 682.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -138.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.00 ms. Allocated memory is still 1.1 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 33.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 416.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1185.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 980.3 MB in the end (delta: 79.4 MB). Peak memory consumption was 79.4 MB. Max. memory is 11.5 GB. * Witness Printer took 78.66 ms. Allocated memory is still 1.1 GB. Free memory is still 980.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); [L523] COND FALSE !(a == 0) [L524] List t; [L525] List l1; [L526] List l2; [L527] List b; [L528] List u; [L529] List p = a; [L530] COND TRUE __VERIFIER_nondet_int() [L531] COND TRUE \read(flag) [L532] p->h = 1 [L533] flag = 0 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L530] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 3 [L544] EXPR a->h [L544] COND FALSE !(a->h == 3) [L545] flag = 1 [L546] l1 = 0 [L547] l2 = 0 [L548] p = a [L549] EXPR p->h [L549] COND TRUE p->h != 3 [L550] t = p [L551] EXPR p->n [L551] p = p->n [L552] COND TRUE \read(flag) [L553] t->n = l1 [L554] l1 = t [L555] flag = 0 [L549] EXPR p->h [L549] COND FALSE !(p->h != 3) [L562] p = l1 [L563] COND TRUE p != 0 [L564] EXPR p->h [L564] COND TRUE p->h != 2 [L573] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 26 SDslu, 130 SDs, 0 SdLazy, 107 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, 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, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 2135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 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...