./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test22-2.c --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/test22-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54c9c3f123e280a35d761deadfd537de0a28f053 .................................................................................................................................................................................................................................................................................................................................... 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 23:53:22,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:53:22,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:53:22,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:53:22,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:53:22,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:53:22,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:53:22,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:53:22,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:53:22,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:53:22,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:53:22,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:53:22,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:53:22,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:53:22,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:53:22,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:53:22,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:53:22,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:53:22,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:53:22,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:53:22,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:53:22,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:53:22,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:53:22,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:53:22,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:53:22,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:53:22,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:53:22,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:53:22,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:53:22,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:53:22,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:53:22,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:53:22,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:53:22,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:53:22,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:53:22,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:53:22,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:53:22,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:53:22,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:53:22,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:53:22,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:53:22,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:53:22,649 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:53:22,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:53:22,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:53:22,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:53:22,659 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:53:22,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:53:22,659 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:53:22,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:53:22,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:53:22,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:53:22,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:53:22,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:53:22,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:53:22,661 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:53:22,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:53:22,661 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:53:22,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:53:22,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:53:22,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:53:22,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:53:22,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:53:22,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:53:22,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:53:22,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:53:22,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:53:22,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:53:22,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:53:22,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:53:22,664 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 -> 54c9c3f123e280a35d761deadfd537de0a28f053 [2019-11-27 23:53:23,037 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:53:23,057 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:53:23,061 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:53:23,063 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:53:23,063 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:53:23,065 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test22-2.c [2019-11-27 23:53:23,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb08e5aa4/a880e853a934409d94c8d9602a36960e/FLAGc28b2f641 [2019-11-27 23:53:23,574 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:53:23,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test22-2.c [2019-11-27 23:53:23,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb08e5aa4/a880e853a934409d94c8d9602a36960e/FLAGc28b2f641 [2019-11-27 23:53:23,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb08e5aa4/a880e853a934409d94c8d9602a36960e [2019-11-27 23:53:23,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:53:23,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:53:23,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:23,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:53:23,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:53:23,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:23" (1/1) ... [2019-11-27 23:53:23,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cff6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:23, skipping insertion in model container [2019-11-27 23:53:23,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:23" (1/1) ... [2019-11-27 23:53:23,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:53:24,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:53:24,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:24,231 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:53:24,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:24,329 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:53:24,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24 WrapperNode [2019-11-27 23:53:24,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:24,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:24,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:53:24,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:53:24,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:24,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:24,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:24,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:53:24,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:53:24,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:53:24,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:24,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:24,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:24,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:24,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:24,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:24,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:24,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:53:24,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:53:24,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:53:24,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:53:24,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (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 23:53:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-27 23:53:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:53:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:53:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:53:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:53:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:53:24,890 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:53:24,890 INFO L297 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-27 23:53:24,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:24 BoogieIcfgContainer [2019-11-27 23:53:24,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:53:24,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:53:24,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:53:24,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:53:24,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:53:23" (1/3) ... [2019-11-27 23:53:24,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e31ec0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:24, skipping insertion in model container [2019-11-27 23:53:24,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (2/3) ... [2019-11-27 23:53:24,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e31ec0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:24, skipping insertion in model container [2019-11-27 23:53:24,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:24" (3/3) ... [2019-11-27 23:53:24,899 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2019-11-27 23:53:24,907 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:53:24,915 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:53:24,928 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:53:24,954 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:53:24,954 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:53:24,954 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:53:24,954 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:53:24,954 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:53:24,954 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:53:24,954 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:53:24,955 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:53:24,969 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-27 23:53:24,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-27 23:53:24,976 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:24,977 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:24,977 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash 164664103, now seen corresponding path program 1 times [2019-11-27 23:53:24,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:24,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522329894] [2019-11-27 23:53:24,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:25,175 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 23:53:25,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522329894] [2019-11-27 23:53:25,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:53:25,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:53:25,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915862865] [2019-11-27 23:53:25,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:53:25,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:25,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:53:25,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:53:25,200 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-27 23:53:25,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:25,216 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-11-27 23:53:25,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:53:25,218 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-11-27 23:53:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:25,226 INFO L225 Difference]: With dead ends: 34 [2019-11-27 23:53:25,226 INFO L226 Difference]: Without dead ends: 21 [2019-11-27 23:53:25,229 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 [2019-11-27 23:53:25,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-27 23:53:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-27 23:53:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-27 23:53:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-27 23:53:25,266 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 19 [2019-11-27 23:53:25,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:25,267 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-27 23:53:25,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:53:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-27 23:53:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-27 23:53:25,268 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:25,268 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:25,269 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:25,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:25,269 INFO L82 PathProgramCache]: Analyzing trace with hash 603612068, now seen corresponding path program 1 times [2019-11-27 23:53:25,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:25,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207342171] [2019-11-27 23:53:25,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:25,528 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 23:53:25,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207342171] [2019-11-27 23:53:25,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:53:25,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-27 23:53:25,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566772514] [2019-11-27 23:53:25,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 23:53:25,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:25,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 23:53:25,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:53:25,533 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 10 states. [2019-11-27 23:53:25,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:25,969 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2019-11-27 23:53:25,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-27 23:53:25,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-11-27 23:53:25,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:25,973 INFO L225 Difference]: With dead ends: 71 [2019-11-27 23:53:25,973 INFO L226 Difference]: Without dead ends: 66 [2019-11-27 23:53:25,975 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2019-11-27 23:53:25,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-27 23:53:25,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 33. [2019-11-27 23:53:25,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-27 23:53:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-11-27 23:53:25,993 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 20 [2019-11-27 23:53:25,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:25,995 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-11-27 23:53:25,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 23:53:25,996 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-11-27 23:53:25,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-27 23:53:25,998 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:25,998 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:25,998 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:26,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:26,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1304676646, now seen corresponding path program 1 times [2019-11-27 23:53:26,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:26,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439449462] [2019-11-27 23:53:26,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:53:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:53:26,162 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:53:26,163 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:53:26,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:53:26 BoogieIcfgContainer [2019-11-27 23:53:26,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:53:26,221 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:53:26,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:53:26,221 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:53:26,222 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:24" (3/4) ... [2019-11-27 23:53:26,224 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:53:26,288 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:53:26,288 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:53:26,291 INFO L168 Benchmark]: Toolchain (without parser) took 2310.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -48.4 MB). Peak memory consumption was 91.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:26,292 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 23:53:26,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -178.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:26,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.25 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 23:53:26,294 INFO L168 Benchmark]: Boogie Preprocessor took 31.11 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. [2019-11-27 23:53:26,295 INFO L168 Benchmark]: RCFGBuilder took 481.04 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: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:26,296 INFO L168 Benchmark]: TraceAbstraction took 1327.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 85.8 MB). Peak memory consumption was 85.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:26,297 INFO L168 Benchmark]: Witness Printer took 67.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:26,301 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 349.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -178.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.25 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. * Boogie Preprocessor took 31.11 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 481.04 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: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1327.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 85.8 MB). Peak memory consumption was 85.8 MB. Max. memory is 11.5 GB. * Witness Printer took 67.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [d1={2:0}, d2={3:0}] [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={3:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={3:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={3:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [d1={2:0}, d2={3:0}] [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L38] COND FALSE !(i < *pa) [L27] EXPR s1->a [L27] return s1->a == i; [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() VAL [d1={2:0}, d2={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 59 SDslu, 139 SDs, 0 SdLazy, 138 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, 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, 2 MinimizatonAttempts, 33 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 2053 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...