./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 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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 0.1.24-30f4e4a [2019-11-27 23:52:44,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:52:44,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:52:44,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:52:44,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:52:44,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:52:44,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:52:44,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:52:44,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:52:44,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:52:44,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:52:44,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:52:44,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:52:44,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:52:44,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:52:44,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:52:44,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:52:44,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:52:44,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:52:44,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:52:44,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:52:44,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:52:44,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:52:44,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:52:44,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:52:44,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:52:44,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:52:44,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:52:44,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:52:44,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:52:44,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:52:44,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:52:44,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:52:44,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:52:44,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:52:44,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:52:44,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:52:44,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:52:44,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:52:44,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:52:44,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:52:44,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:52:44,727 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:52:44,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:52:44,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:52:44,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:52:44,729 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:52:44,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:52:44,730 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:52:44,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:52:44,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:52:44,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:52:44,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:52:44,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:52:44,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:52:44,731 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:52:44,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:52:44,732 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:52:44,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:52:44,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:52:44,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:52:44,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:52:44,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:52:44,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:52:44,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:52:44,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:52:44,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:52:44,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:52:44,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:52:44,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:52:44,735 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 [2019-11-27 23:52:45,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:52:45,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:52:45,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:52:45,037 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:52:45,037 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:52:45,039 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/1_3.i [2019-11-27 23:52:45,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/561a196bd/332d1c4639c74a6fb564f553171ef82a/FLAGe20e0b245 [2019-11-27 23:52:45,539 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:52:45,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/1_3.i [2019-11-27 23:52:45,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/561a196bd/332d1c4639c74a6fb564f553171ef82a/FLAGe20e0b245 [2019-11-27 23:52:45,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/561a196bd/332d1c4639c74a6fb564f553171ef82a [2019-11-27 23:52:45,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:52:45,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:52:45,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:52:45,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:52:45,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:52:45,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:52:45" (1/1) ... [2019-11-27 23:52:45,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9a5782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:45, skipping insertion in model container [2019-11-27 23:52:45,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:52:45" (1/1) ... [2019-11-27 23:52:45,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:52:45,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:52:46,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:52:46,156 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:52:46,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:52:46,186 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:52:46,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:46 WrapperNode [2019-11-27 23:52:46,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:52:46,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:52:46,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:52:46,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:52:46,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:46" (1/1) ... [2019-11-27 23:52:46,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:46" (1/1) ... [2019-11-27 23:52:46,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:52:46,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:52:46,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:52:46,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:52:46,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:46" (1/1) ... [2019-11-27 23:52:46,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:46" (1/1) ... [2019-11-27 23:52:46,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:46" (1/1) ... [2019-11-27 23:52:46,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:46" (1/1) ... [2019-11-27 23:52:46,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:46" (1/1) ... [2019-11-27 23:52:46,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:46" (1/1) ... [2019-11-27 23:52:46,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:46" (1/1) ... [2019-11-27 23:52:46,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:52:46,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:52:46,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:52:46,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:52:46,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:52:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:52:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 23:52:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:52:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:52:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:52:46,563 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:52:46,564 INFO L297 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-27 23:52:46,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:52:46 BoogieIcfgContainer [2019-11-27 23:52:46,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:52:46,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:52:46,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:52:46,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:52:46,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:52:45" (1/3) ... [2019-11-27 23:52:46,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f3cce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:52:46, skipping insertion in model container [2019-11-27 23:52:46,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:46" (2/3) ... [2019-11-27 23:52:46,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f3cce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:52:46, skipping insertion in model container [2019-11-27 23:52:46,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:52:46" (3/3) ... [2019-11-27 23:52:46,574 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2019-11-27 23:52:46,584 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:52:46,591 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-27 23:52:46,605 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-27 23:52:46,639 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:52:46,639 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:52:46,640 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:52:46,640 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:52:46,640 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:52:46,641 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:52:46,641 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:52:46,641 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:52:46,659 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-27 23:52:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-27 23:52:46,667 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:52:46,668 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-27 23:52:46,669 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:52:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:52:46,677 INFO L82 PathProgramCache]: Analyzing trace with hash 889476007, now seen corresponding path program 1 times [2019-11-27 23:52:46,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:52:46,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757826344] [2019-11-27 23:52:46,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:52:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:52:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:52:46,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757826344] [2019-11-27 23:52:46,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:52:46,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:52:46,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440280291] [2019-11-27 23:52:46,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:52:46,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:52:46,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:52:46,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:52:46,912 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2019-11-27 23:52:46,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:52:46,989 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-11-27 23:52:46,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 23:52:46,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-27 23:52:46,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:52:46,999 INFO L225 Difference]: With dead ends: 27 [2019-11-27 23:52:47,000 INFO L226 Difference]: Without dead ends: 10 [2019-11-27 23:52:47,003 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 [2019-11-27 23:52:47,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-27 23:52:47,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-27 23:52:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-27 23:52:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2019-11-27 23:52:47,037 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 6 [2019-11-27 23:52:47,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:52:47,037 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2019-11-27 23:52:47,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:52:47,037 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2019-11-27 23:52:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 23:52:47,038 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:52:47,038 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:52:47,039 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:52:47,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:52:47,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1570200632, now seen corresponding path program 1 times [2019-11-27 23:52:47,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:52:47,040 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439354407] [2019-11-27 23:52:47,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:52:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:52:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:52:47,097 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:52:47,098 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:52:47,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:52:47 BoogieIcfgContainer [2019-11-27 23:52:47,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:52:47,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:52:47,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:52:47,131 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:52:47,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:52:46" (3/4) ... [2019-11-27 23:52:47,134 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:52:47,193 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:52:47,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:52:47,195 INFO L168 Benchmark]: Toolchain (without parser) took 1268.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 963.1 MB in the beginning and 1.1 GB in the end (delta: -127.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:52:47,196 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:52:47,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.76 ms. Allocated memory is still 1.0 GB. Free memory was 963.1 MB in the beginning and 952.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:52:47,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -195.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:52:47,199 INFO L168 Benchmark]: Boogie Preprocessor took 23.99 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:52:47,199 INFO L168 Benchmark]: RCFGBuilder took 259.57 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:52:47,200 INFO L168 Benchmark]: TraceAbstraction took 563.68 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: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:52:47,201 INFO L168 Benchmark]: Witness Printer took 62.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:52:47,205 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 259.76 ms. Allocated memory is still 1.0 GB. Free memory was 963.1 MB in the beginning and 952.3 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 93.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -195.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.99 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 259.57 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 563.68 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: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Witness Printer took 62.45 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...