./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test28-1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/test28-1.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 4ab8dcad35597bc77a09246c20c802a7c0b3d86b ............................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-8bd4bc6 [2020-07-28 17:58:56,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:58:56,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:58:56,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:58:56,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:58:56,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:58:56,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:58:56,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:58:56,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:58:56,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:58:56,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:58:56,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:58:56,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:58:56,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:58:56,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:58:56,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:58:56,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:58:56,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:58:56,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:58:56,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:58:56,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:58:56,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:58:56,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:58:56,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:58:56,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:58:56,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:58:56,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:58:56,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:58:56,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:58:56,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:58:56,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:58:56,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:58:56,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:58:56,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:58:56,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:58:56,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:58:56,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:58:56,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:58:56,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:58:56,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:58:56,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:58:56,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:58:56,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:58:56,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:58:56,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:58:56,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:58:56,947 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:58:56,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:58:56,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:58:56,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:58:56,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:58:56,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:58:56,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:58:56,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:58:56,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:58:56,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:58:56,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:58:56,954 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:58:56,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:58:56,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:58:56,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:58:56,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:58:56,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:58:56,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:58:56,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:58:56,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:58:56,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:58:56,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:58:56,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:58:56,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:58:56,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:58:56,959 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 -> 4ab8dcad35597bc77a09246c20c802a7c0b3d86b [2020-07-28 17:58:57,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:58:57,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:58:57,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:58:57,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:58:57,282 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:58:57,283 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test28-1.c [2020-07-28 17:58:57,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a693b560/a3d628efdf24485f884adfcec08883ac/FLAG7f2d3bfe5 [2020-07-28 17:58:57,793 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:58:57,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test28-1.c [2020-07-28 17:58:57,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a693b560/a3d628efdf24485f884adfcec08883ac/FLAG7f2d3bfe5 [2020-07-28 17:58:58,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a693b560/a3d628efdf24485f884adfcec08883ac [2020-07-28 17:58:58,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:58:58,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:58:58,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:58,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:58:58,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:58:58,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:58" (1/1) ... [2020-07-28 17:58:58,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ec5438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58, skipping insertion in model container [2020-07-28 17:58:58,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:58" (1/1) ... [2020-07-28 17:58:58,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:58:58,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:58:58,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:58,506 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:58:58,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:58,541 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:58:58,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58 WrapperNode [2020-07-28 17:58:58,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:58,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:58,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:58:58,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:58:58,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58" (1/1) ... [2020-07-28 17:58:58,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58" (1/1) ... [2020-07-28 17:58:58,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:58,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:58:58,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:58:58,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:58:58,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58" (1/1) ... [2020-07-28 17:58:58,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58" (1/1) ... [2020-07-28 17:58:58,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58" (1/1) ... [2020-07-28 17:58:58,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58" (1/1) ... [2020-07-28 17:58:58,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58" (1/1) ... [2020-07-28 17:58:58,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58" (1/1) ... [2020-07-28 17:58:58,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58" (1/1) ... [2020-07-28 17:58:58,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:58:58,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:58:58,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:58:58,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:58:58,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58" (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 [2020-07-28 17:58:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 17:58:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:58:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:58:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:58:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:58:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:58:59,056 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:58:59,056 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 17:58:59,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:59 BoogieIcfgContainer [2020-07-28 17:58:59,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:58:59,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:58:59,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:58:59,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:58:59,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:58:58" (1/3) ... [2020-07-28 17:58:59,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287839b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:59, skipping insertion in model container [2020-07-28 17:58:59,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:58" (2/3) ... [2020-07-28 17:58:59,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287839b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:59, skipping insertion in model container [2020-07-28 17:58:59,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:59" (3/3) ... [2020-07-28 17:58:59,069 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-1.c [2020-07-28 17:58:59,078 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:58:59,085 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:58:59,096 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:58:59,114 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:58:59,114 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:58:59,114 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:58:59,114 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:58:59,114 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:58:59,114 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:58:59,115 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:58:59,115 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:58:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-07-28 17:58:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 17:58:59,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:59,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:58:59,138 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:59,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:59,144 INFO L82 PathProgramCache]: Analyzing trace with hash -594068692, now seen corresponding path program 1 times [2020-07-28 17:58:59,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:58:59,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593092860] [2020-07-28 17:58:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:58:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:58:59,418 INFO L280 TraceCheckUtils]: 0: Hoare triple {16#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {16#true} is VALID [2020-07-28 17:58:59,420 INFO L280 TraceCheckUtils]: 1: Hoare triple {16#true} havoc main_#res;havoc main_#t~nondet0, main_#t~ite1.base, main_#t~ite1.offset, main_#t~mem2, main_#t~short3, main_~#d1~0.base, main_~#d1~0.offset, main_~#d2~0.base, main_~#d2~0.offset, main_~n~0, main_~pd~0.base, main_~pd~0.offset;call main_~#d1~0.base, main_~#d1~0.offset := #Ultimate.allocOnStack(8);call main_~#d2~0.base, main_~#d2~0.offset := #Ultimate.allocOnStack(8);assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; {18#(not (= |ULTIMATE.start_main_~#d2~0.base| |ULTIMATE.start_main_~#d1~0.base|))} is VALID [2020-07-28 17:58:59,421 INFO L280 TraceCheckUtils]: 2: Hoare triple {18#(not (= |ULTIMATE.start_main_~#d2~0.base| |ULTIMATE.start_main_~#d1~0.base|))} assume 0 != main_~n~0;main_#t~ite1.base, main_#t~ite1.offset := main_~#d1~0.base, main_~#d1~0.offset; {19#(not (= |ULTIMATE.start_main_~#d2~0.base| |ULTIMATE.start_main_#t~ite1.base|))} is VALID [2020-07-28 17:58:59,422 INFO L280 TraceCheckUtils]: 3: Hoare triple {19#(not (= |ULTIMATE.start_main_~#d2~0.base| |ULTIMATE.start_main_#t~ite1.base|))} main_~pd~0.base, main_~pd~0.offset := main_#t~ite1.base, main_#t~ite1.offset;havoc main_#t~ite1.base, main_#t~ite1.offset; {20#(not (= |ULTIMATE.start_main_~#d2~0.base| ULTIMATE.start_main_~pd~0.base))} is VALID [2020-07-28 17:58:59,423 INFO L280 TraceCheckUtils]: 4: Hoare triple {20#(not (= |ULTIMATE.start_main_~#d2~0.base| ULTIMATE.start_main_~pd~0.base))} assume main_~pd~0.base == main_~#d2~0.base && main_~pd~0.offset == main_~#d2~0.offset;call write~int(0, main_~pd~0.base, main_~pd~0.offset, 4); {17#false} is VALID [2020-07-28 17:58:59,424 INFO L280 TraceCheckUtils]: 5: Hoare triple {17#false} main_#t~short3 := main_~pd~0.base == main_~#d2~0.base && main_~pd~0.offset == main_~#d2~0.offset; {17#false} is VALID [2020-07-28 17:58:59,424 INFO L280 TraceCheckUtils]: 6: Hoare triple {17#false} assume main_#t~short3;call main_#t~mem2 := read~int(main_~#d2~0.base, 4 + main_~#d2~0.offset, 4);main_#t~short3 := 0 != main_#t~mem2; {17#false} is VALID [2020-07-28 17:58:59,425 INFO L280 TraceCheckUtils]: 7: Hoare triple {17#false} assume main_#t~short3;havoc main_#t~mem2;havoc main_#t~short3; {17#false} is VALID [2020-07-28 17:58:59,426 INFO L280 TraceCheckUtils]: 8: Hoare triple {17#false} assume !false; {17#false} is VALID [2020-07-28 17:58:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:58:59,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593092860] [2020-07-28 17:58:59,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:58:59,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-28 17:58:59,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871872474] [2020-07-28 17:58:59,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-07-28 17:58:59,438 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:58:59,441 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-28 17:58:59,469 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:59,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-28 17:58:59,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:58:59,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-28 17:58:59,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-28 17:58:59,482 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 5 states. [2020-07-28 17:58:59,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:59,659 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2020-07-28 17:58:59,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-28 17:58:59,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-07-28 17:58:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:58:59,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 17:58:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2020-07-28 17:58:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 17:58:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2020-07-28 17:58:59,671 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 35 transitions. [2020-07-28 17:58:59,725 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:59,736 INFO L225 Difference]: With dead ends: 28 [2020-07-28 17:58:59,737 INFO L226 Difference]: Without dead ends: 17 [2020-07-28 17:58:59,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-28 17:58:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-28 17:58:59,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2020-07-28 17:58:59,778 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:58:59,779 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand 12 states. [2020-07-28 17:58:59,779 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand 12 states. [2020-07-28 17:58:59,779 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 12 states. [2020-07-28 17:58:59,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:59,782 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-07-28 17:58:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-07-28 17:58:59,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:59,783 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:59,783 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 17 states. [2020-07-28 17:58:59,783 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 17 states. [2020-07-28 17:58:59,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:59,786 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-07-28 17:58:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-07-28 17:58:59,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:59,787 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:59,787 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:58:59,788 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:58:59,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-28 17:58:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-07-28 17:58:59,791 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2020-07-28 17:58:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:58:59,792 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-07-28 17:58:59,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-28 17:58:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-07-28 17:58:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 17:58:59,793 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:59,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:58:59,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:58:59,794 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:59,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:59,795 INFO L82 PathProgramCache]: Analyzing trace with hash -592221650, now seen corresponding path program 1 times [2020-07-28 17:58:59,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:58:59,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281432843] [2020-07-28 17:58:59,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:58:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:58:59,891 INFO L280 TraceCheckUtils]: 0: Hoare triple {107#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {107#true} is VALID [2020-07-28 17:58:59,893 INFO L280 TraceCheckUtils]: 1: Hoare triple {107#true} havoc main_#res;havoc main_#t~nondet0, main_#t~ite1.base, main_#t~ite1.offset, main_#t~mem2, main_#t~short3, main_~#d1~0.base, main_~#d1~0.offset, main_~#d2~0.base, main_~#d2~0.offset, main_~n~0, main_~pd~0.base, main_~pd~0.offset;call main_~#d1~0.base, main_~#d1~0.offset := #Ultimate.allocOnStack(8);call main_~#d2~0.base, main_~#d2~0.offset := #Ultimate.allocOnStack(8);assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; {109#(= |ULTIMATE.start_main_~#d2~0.offset| |ULTIMATE.start_main_~#d1~0.offset|)} is VALID [2020-07-28 17:58:59,895 INFO L280 TraceCheckUtils]: 2: Hoare triple {109#(= |ULTIMATE.start_main_~#d2~0.offset| |ULTIMATE.start_main_~#d1~0.offset|)} assume 0 != main_~n~0;main_#t~ite1.base, main_#t~ite1.offset := main_~#d1~0.base, main_~#d1~0.offset; {110#(= |ULTIMATE.start_main_#t~ite1.offset| |ULTIMATE.start_main_~#d2~0.offset|)} is VALID [2020-07-28 17:58:59,896 INFO L280 TraceCheckUtils]: 3: Hoare triple {110#(= |ULTIMATE.start_main_#t~ite1.offset| |ULTIMATE.start_main_~#d2~0.offset|)} main_~pd~0.base, main_~pd~0.offset := main_#t~ite1.base, main_#t~ite1.offset;havoc main_#t~ite1.base, main_#t~ite1.offset; {111#(= ULTIMATE.start_main_~pd~0.offset |ULTIMATE.start_main_~#d2~0.offset|)} is VALID [2020-07-28 17:58:59,898 INFO L280 TraceCheckUtils]: 4: Hoare triple {111#(= ULTIMATE.start_main_~pd~0.offset |ULTIMATE.start_main_~#d2~0.offset|)} assume !(main_~pd~0.base == main_~#d2~0.base && main_~pd~0.offset == main_~#d2~0.offset);call write~int(0, main_~pd~0.base, 4 + main_~pd~0.offset, 4); {112#(not (= |ULTIMATE.start_main_~#d2~0.base| ULTIMATE.start_main_~pd~0.base))} is VALID [2020-07-28 17:58:59,899 INFO L280 TraceCheckUtils]: 5: Hoare triple {112#(not (= |ULTIMATE.start_main_~#d2~0.base| ULTIMATE.start_main_~pd~0.base))} main_#t~short3 := main_~pd~0.base == main_~#d2~0.base && main_~pd~0.offset == main_~#d2~0.offset; {113#(not |ULTIMATE.start_main_#t~short3|)} is VALID [2020-07-28 17:58:59,900 INFO L280 TraceCheckUtils]: 6: Hoare triple {113#(not |ULTIMATE.start_main_#t~short3|)} assume main_#t~short3;call main_#t~mem2 := read~int(main_~#d2~0.base, 4 + main_~#d2~0.offset, 4);main_#t~short3 := 0 != main_#t~mem2; {108#false} is VALID [2020-07-28 17:58:59,901 INFO L280 TraceCheckUtils]: 7: Hoare triple {108#false} assume main_#t~short3;havoc main_#t~mem2;havoc main_#t~short3; {108#false} is VALID [2020-07-28 17:58:59,901 INFO L280 TraceCheckUtils]: 8: Hoare triple {108#false} assume !false; {108#false} is VALID [2020-07-28 17:58:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:58:59,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281432843] [2020-07-28 17:58:59,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:58:59,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-28 17:58:59,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429264496] [2020-07-28 17:58:59,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-07-28 17:58:59,907 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:58:59,907 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-28 17:58:59,923 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:59,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-28 17:58:59,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:58:59,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-28 17:58:59,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-28 17:58:59,925 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 7 states. [2020-07-28 17:59:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:00,149 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-07-28 17:59:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-28 17:59:00,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-07-28 17:59:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:59:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 17:59:00,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 19 transitions. [2020-07-28 17:59:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 17:59:00,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 19 transitions. [2020-07-28 17:59:00,154 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 19 transitions. [2020-07-28 17:59:00,185 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:00,186 INFO L225 Difference]: With dead ends: 19 [2020-07-28 17:59:00,186 INFO L226 Difference]: Without dead ends: 10 [2020-07-28 17:59:00,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-28 17:59:00,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-07-28 17:59:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-07-28 17:59:00,194 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:59:00,194 INFO L82 GeneralOperation]: Start isEquivalent. First operand 10 states. Second operand 10 states. [2020-07-28 17:59:00,194 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 10 states. [2020-07-28 17:59:00,195 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 10 states. [2020-07-28 17:59:00,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:00,196 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-07-28 17:59:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-07-28 17:59:00,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:00,197 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:00,197 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 10 states. [2020-07-28 17:59:00,198 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 10 states. [2020-07-28 17:59:00,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:00,199 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-07-28 17:59:00,200 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-07-28 17:59:00,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:00,201 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:00,201 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:59:00,201 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:59:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-28 17:59:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-07-28 17:59:00,203 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-07-28 17:59:00,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:59:00,203 INFO L479 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-07-28 17:59:00,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-28 17:59:00,204 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-07-28 17:59:00,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 17:59:00,205 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:59:00,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:59:00,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:59:00,206 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:59:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:59:00,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1180938670, now seen corresponding path program 1 times [2020-07-28 17:59:00,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:59:00,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59492936] [2020-07-28 17:59:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:59:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:59:00,225 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:59:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:59:00,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:59:00,265 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:59:00,266 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:59:00,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-28 17:59:00,321 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:59:00,321 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:59:00,322 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-28 17:59:00,322 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-28 17:59:00,322 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-28 17:59:00,322 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-28 17:59:00,322 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-28 17:59:00,323 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-28 17:59:00,323 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-28 17:59:00,323 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-28 17:59:00,323 WARN L170 areAnnotationChecker]: L20-2 has no Hoare annotation [2020-07-28 17:59:00,324 WARN L170 areAnnotationChecker]: L20-2 has no Hoare annotation [2020-07-28 17:59:00,324 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-28 17:59:00,324 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-28 17:59:00,324 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-28 17:59:00,325 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:59:00,325 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:59:00,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:59:00 BoogieIcfgContainer [2020-07-28 17:59:00,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:59:00,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:59:00,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:59:00,332 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:59:00,334 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:59" (3/4) ... [2020-07-28 17:59:00,336 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 17:59:00,401 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:59:00,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:59:00,405 INFO L168 Benchmark]: Toolchain (without parser) took 2166.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 956.2 MB in the beginning and 990.8 MB in the end (delta: -34.6 MB). Peak memory consumption was 98.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:00,406 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:59:00,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.70 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:00,408 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:00,409 INFO L168 Benchmark]: Boogie Preprocessor took 24.49 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. [2020-07-28 17:59:00,410 INFO L168 Benchmark]: RCFGBuilder took 393.60 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:00,411 INFO L168 Benchmark]: TraceAbstraction took 1270.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.8 MB in the end (delta: 112.4 MB). Peak memory consumption was 112.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:00,411 INFO L168 Benchmark]: Witness Printer took 70.03 ms. Allocated memory is still 1.2 GB. Free memory is still 990.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:59:00,415 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 302.70 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 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 98.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.49 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 393.60 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1270.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.8 MB in the end (delta: 112.4 MB). Peak memory consumption was 112.4 MB. Max. memory is 11.5 GB. * Witness Printer took 70.03 ms. Allocated memory is still 1.2 GB. Free memory is still 990.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] struct dummy d1, d2; [L13] int n = __VERIFIER_nondet_int(); [L14] EXPR n ? &d1 : &d2 [L14] struct dummy *pd = n ? &d1 : &d2; [L15] COND TRUE pd == &d2 [L16] pd->a = 0 [L20] pd == &d2 && d2.b != 0 [L20] EXPR d2.b [L20] pd == &d2 && d2.b != 0 [L20] COND TRUE pd == &d2 && d2.b != 0 [L26] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 45 SDslu, 26 SDs, 0 SdLazy, 60 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...