./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/1_3.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/ldv-regression/1_3.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 4dd574cd450f66ad0a509d55de13eff19153a3c0 .......................................................................................................................................................................................................................................................................... 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 16:56:59,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:56:59,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:56:59,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:56:59,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:56:59,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:56:59,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:56:59,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:56:59,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:56:59,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:56:59,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:56:59,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:56:59,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:56:59,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:56:59,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:56:59,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:56:59,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:56:59,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:56:59,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:56:59,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:56:59,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:56:59,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:56:59,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:56:59,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:56:59,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:57:00,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:57:00,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:57:00,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:57:00,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:57:00,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:57:00,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:57:00,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:57:00,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:57:00,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:57:00,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:57:00,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:57:00,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:57:00,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:57:00,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:57:00,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:57:00,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:57:00,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:57:00,051 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:57:00,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:57:00,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:57:00,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:57:00,058 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:57:00,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:57:00,059 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:57:00,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:57:00,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:57:00,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:57:00,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:57:00,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:57:00,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:57:00,062 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:57:00,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:57:00,063 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:57:00,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:57:00,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:57:00,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:57:00,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:57:00,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:57:00,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:57:00,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:57:00,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:57:00,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:57:00,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:57:00,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:57:00,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:57:00,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:57:00,070 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 -> 4dd574cd450f66ad0a509d55de13eff19153a3c0 [2019-11-28 16:57:00,374 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:57:00,388 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:57:00,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:57:00,393 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:57:00,394 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:57:00,395 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/1_3.i [2019-11-28 16:57:00,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b6856878/08290d55b25c4f06ad6ad064f4f9e7f5/FLAG7d32d5773 [2019-11-28 16:57:00,977 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:57:00,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/1_3.i [2019-11-28 16:57:00,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b6856878/08290d55b25c4f06ad6ad064f4f9e7f5/FLAG7d32d5773 [2019-11-28 16:57:01,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b6856878/08290d55b25c4f06ad6ad064f4f9e7f5 [2019-11-28 16:57:01,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:57:01,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:57:01,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:01,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:57:01,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:57:01,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:01" (1/1) ... [2019-11-28 16:57:01,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d22b55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01, skipping insertion in model container [2019-11-28 16:57:01,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:01" (1/1) ... [2019-11-28 16:57:01,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:57:01,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:57:01,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:01,561 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:57:01,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:01,594 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:57:01,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01 WrapperNode [2019-11-28 16:57:01,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:01,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:01,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:57:01,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:57:01,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01" (1/1) ... [2019-11-28 16:57:01,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01" (1/1) ... [2019-11-28 16:57:01,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:01,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:57:01,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:57:01,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:57:01,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01" (1/1) ... [2019-11-28 16:57:01,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01" (1/1) ... [2019-11-28 16:57:01,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01" (1/1) ... [2019-11-28 16:57:01,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01" (1/1) ... [2019-11-28 16:57:01,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01" (1/1) ... [2019-11-28 16:57:01,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01" (1/1) ... [2019-11-28 16:57:01,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01" (1/1) ... [2019-11-28 16:57:01,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:57:01,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:57:01,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:57:01,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:57:01,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01" (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 16:57:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:57:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 16:57:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:57:01,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:57:01,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:57:01,989 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:57:01,990 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:57:01,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:01 BoogieIcfgContainer [2019-11-28 16:57:01,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:57:01,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:57:01,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:57:01,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:57:01,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:57:01" (1/3) ... [2019-11-28 16:57:01,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42340e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:01, skipping insertion in model container [2019-11-28 16:57:01,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:01" (2/3) ... [2019-11-28 16:57:01,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42340e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:01, skipping insertion in model container [2019-11-28 16:57:01,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:01" (3/3) ... [2019-11-28 16:57:02,001 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2019-11-28 16:57:02,013 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:57:02,022 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 16:57:02,038 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-28 16:57:02,076 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:57:02,076 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:57:02,077 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:57:02,077 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:57:02,077 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:57:02,077 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:57:02,078 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:57:02,078 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:57:02,099 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-28 16:57:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 16:57:02,107 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:02,109 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 16:57:02,110 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:02,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:02,117 INFO L82 PathProgramCache]: Analyzing trace with hash 889476007, now seen corresponding path program 1 times [2019-11-28 16:57:02,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:02,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278879251] [2019-11-28 16:57:02,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:57:02,329 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 16:57:02,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278879251] [2019-11-28 16:57:02,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:57:02,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:57:02,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886046160] [2019-11-28 16:57:02,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:57:02,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:57:02,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:57:02,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:57:02,352 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2019-11-28 16:57:02,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:57:02,425 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-11-28 16:57:02,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 16:57:02,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-28 16:57:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:57:02,437 INFO L225 Difference]: With dead ends: 27 [2019-11-28 16:57:02,437 INFO L226 Difference]: Without dead ends: 10 [2019-11-28 16:57:02,441 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 [2019-11-28 16:57:02,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-28 16:57:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 16:57:02,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 16:57:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2019-11-28 16:57:02,476 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 6 [2019-11-28 16:57:02,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:57:02,476 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2019-11-28 16:57:02,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:57:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2019-11-28 16:57:02,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:57:02,477 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:02,478 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:02,478 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:02,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:02,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1570200632, now seen corresponding path program 1 times [2019-11-28 16:57:02,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:02,479 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687371687] [2019-11-28 16:57:02,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:02,544 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:57:02,545 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:57:02,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:57:02 BoogieIcfgContainer [2019-11-28 16:57:02,577 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:57:02,577 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:57:02,577 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:57:02,578 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:57:02,578 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:01" (3/4) ... [2019-11-28 16:57:02,580 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:57:02,630 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:57:02,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:57:02,633 INFO L168 Benchmark]: Toolchain (without parser) took 1322.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -132.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:02,634 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:57:02,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.55 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:02,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:02,643 INFO L168 Benchmark]: Boogie Preprocessor took 23.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:02,645 INFO L168 Benchmark]: RCFGBuilder took 272.42 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:02,648 INFO L168 Benchmark]: TraceAbstraction took 584.01 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: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:02,648 INFO L168 Benchmark]: Witness Printer took 53.16 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 16:57:02,656 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 281.55 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 98.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 272.42 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 584.01 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: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Witness Printer took 53.16 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: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L50] rr * ptr1 = 0; [L30] rr * r = (rr *)malloc(sizeof *r); [L31] r -> state = 0 [L32] return r; [L37] rr * r = getrr(); [L38] r -> state = 1 [L39] return r; [L51] ptr1 = getPtr() [L44] EXPR ptr -> state [L44] (ptr -> state == 1) ? (0) : __blast_assert () [L45] ptr -> state = 2 [L44] EXPR ptr -> state [L44] (ptr -> state == 1) ? (0) : __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 3 SDslu, 14 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 65 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...