./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/indp3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/array-fpi/indp3f.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e99da8898d29fd1a1f0516fcdc70c4161903def .................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-9a8b2e8 [2020-10-19 22:13:36,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:13:36,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:13:36,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:13:36,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:13:36,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:13:36,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:13:36,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:13:36,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:13:36,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:13:36,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:13:36,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:13:36,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:13:36,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:13:36,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:13:36,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:13:36,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:13:36,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:13:36,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:13:36,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:13:36,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:13:36,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:13:36,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:13:36,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:13:36,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:13:36,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:13:36,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:13:36,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:13:36,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:13:36,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:13:36,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:13:36,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:13:36,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:13:36,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:13:36,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:13:36,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:13:36,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:13:36,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:13:36,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:13:36,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:13:36,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:13:36,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:13:36,962 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:13:36,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:13:36,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:13:36,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:13:36,964 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:13:36,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:13:36,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:13:36,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:13:36,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:13:36,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:13:36,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:13:36,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:13:36,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:13:36,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:13:36,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:13:36,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:13:36,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:13:36,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:13:36,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:13:36,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:13:36,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:13:36,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:13:36,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:13:36,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:13:36,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:13:36,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:13:36,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:13:36,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:13:36,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:13:36,975 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(reach_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 -> 7e99da8898d29fd1a1f0516fcdc70c4161903def [2020-10-19 22:13:37,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:13:37,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:13:37,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:13:37,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:13:37,209 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:13:37,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/indp3f.c [2020-10-19 22:13:37,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffd170d6c/f891cca591a7447d8f76b4d0db240726/FLAGf6e7cc026 [2020-10-19 22:13:37,831 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:13:37,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/indp3f.c [2020-10-19 22:13:37,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffd170d6c/f891cca591a7447d8f76b4d0db240726/FLAGf6e7cc026 [2020-10-19 22:13:38,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffd170d6c/f891cca591a7447d8f76b4d0db240726 [2020-10-19 22:13:38,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:13:38,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:13:38,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:13:38,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:13:38,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:13:38,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:13:38" (1/1) ... [2020-10-19 22:13:38,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf87428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38, skipping insertion in model container [2020-10-19 22:13:38,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:13:38" (1/1) ... [2020-10-19 22:13:38,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:13:38,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:13:38,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:13:38,421 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:13:38,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:13:38,461 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:13:38,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38 WrapperNode [2020-10-19 22:13:38,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:13:38,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:13:38,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:13:38,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:13:38,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38" (1/1) ... [2020-10-19 22:13:38,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38" (1/1) ... [2020-10-19 22:13:38,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:13:38,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:13:38,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:13:38,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:13:38,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38" (1/1) ... [2020-10-19 22:13:38,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38" (1/1) ... [2020-10-19 22:13:38,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38" (1/1) ... [2020-10-19 22:13:38,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38" (1/1) ... [2020-10-19 22:13:38,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38" (1/1) ... [2020-10-19 22:13:38,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38" (1/1) ... [2020-10-19 22:13:38,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38" (1/1) ... [2020-10-19 22:13:38,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:13:38,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:13:38,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:13:38,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:13:38,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38" (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 [2020-10-19 22:13:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:13:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:13:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:13:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:13:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:13:38,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:13:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:13:38,972 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:13:38,972 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-19 22:13:38,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:13:38 BoogieIcfgContainer [2020-10-19 22:13:38,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:13:38,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:13:38,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:13:38,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:13:38,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:13:38" (1/3) ... [2020-10-19 22:13:38,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6141bf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:13:38, skipping insertion in model container [2020-10-19 22:13:38,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:13:38" (2/3) ... [2020-10-19 22:13:38,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6141bf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:13:38, skipping insertion in model container [2020-10-19 22:13:38,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:13:38" (3/3) ... [2020-10-19 22:13:39,000 INFO L111 eAbstractionObserver]: Analyzing ICFG indp3f.c [2020-10-19 22:13:39,012 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:13:39,018 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:13:39,029 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:13:39,051 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:13:39,051 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:13:39,051 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:13:39,051 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:13:39,051 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:13:39,052 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:13:39,052 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:13:39,052 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:13:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-19 22:13:39,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 22:13:39,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:13:39,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:13:39,076 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:13:39,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:13:39,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1389277550, now seen corresponding path program 1 times [2020-10-19 22:13:39,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:13:39,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142887928] [2020-10-19 22:13:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:13:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:13:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:13:39,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142887928] [2020-10-19 22:13:39,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:13:39,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:13:39,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189867239] [2020-10-19 22:13:39,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:13:39,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:13:39,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:13:39,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:13:39,281 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-19 22:13:39,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:13:39,303 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2020-10-19 22:13:39,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:13:39,304 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-19 22:13:39,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:13:39,314 INFO L225 Difference]: With dead ends: 51 [2020-10-19 22:13:39,314 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 22:13:39,317 INFO L677 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 [2020-10-19 22:13:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 22:13:39,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-19 22:13:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 22:13:39,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-19 22:13:39,357 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2020-10-19 22:13:39,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:13:39,357 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-19 22:13:39,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:13:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-19 22:13:39,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 22:13:39,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:13:39,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:13:39,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:13:39,359 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:13:39,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:13:39,360 INFO L82 PathProgramCache]: Analyzing trace with hash 796930410, now seen corresponding path program 1 times [2020-10-19 22:13:39,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:13:39,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056292486] [2020-10-19 22:13:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:13:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:13:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:13:39,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056292486] [2020-10-19 22:13:39,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:13:39,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:13:39,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625688732] [2020-10-19 22:13:39,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:13:39,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:13:39,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:13:39,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:13:39,496 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-10-19 22:13:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:13:39,608 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-10-19 22:13:39,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:13:39,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-19 22:13:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:13:39,610 INFO L225 Difference]: With dead ends: 53 [2020-10-19 22:13:39,611 INFO L226 Difference]: Without dead ends: 37 [2020-10-19 22:13:39,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:13:39,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-19 22:13:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-10-19 22:13:39,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 22:13:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-19 22:13:39,620 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2020-10-19 22:13:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:13:39,620 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-19 22:13:39,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:13:39,621 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-19 22:13:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:13:39,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:13:39,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:13:39,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:13:39,622 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:13:39,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:13:39,623 INFO L82 PathProgramCache]: Analyzing trace with hash 495241442, now seen corresponding path program 1 times [2020-10-19 22:13:39,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:13:39,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316699448] [2020-10-19 22:13:39,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:13:39,641 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:13:39,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445825887] [2020-10-19 22:13:39,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:13:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:13:39,715 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:13:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:13:39,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:13:39,782 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:13:39,783 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:13:39,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-19 22:13:40,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:13:40 BoogieIcfgContainer [2020-10-19 22:13:40,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:13:40,047 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:13:40,047 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:13:40,048 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:13:40,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:13:38" (3/4) ... [2020-10-19 22:13:40,050 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:13:40,116 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:13:40,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:13:40,119 INFO L168 Benchmark]: Toolchain (without parser) took 1955.54 ms. Allocated memory was 43.5 MB in the beginning and 47.7 MB in the end (delta: 4.2 MB). Free memory was 27.3 MB in the beginning and 18.8 MB in the end (delta: 8.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:13:40,120 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 34.1 MB. Free memory was 14.3 MB in the beginning and 14.3 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-19 22:13:40,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.21 ms. Allocated memory is still 43.5 MB. Free memory was 26.4 MB in the beginning and 15.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:13:40,122 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.01 ms. Allocated memory was 43.5 MB in the beginning and 44.6 MB in the end (delta: 1.0 MB). Free memory was 15.2 MB in the beginning and 25.4 MB in the end (delta: -10.2 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:13:40,123 INFO L168 Benchmark]: Boogie Preprocessor took 32.05 ms. Allocated memory is still 44.6 MB. Free memory was 25.4 MB in the beginning and 23.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:13:40,124 INFO L168 Benchmark]: RCFGBuilder took 428.76 ms. Allocated memory was 44.6 MB in the beginning and 45.6 MB in the end (delta: 1.0 MB). Free memory was 23.7 MB in the beginning and 21.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:13:40,125 INFO L168 Benchmark]: TraceAbstraction took 1064.71 ms. Allocated memory was 45.6 MB in the beginning and 47.7 MB in the end (delta: 2.1 MB). Free memory was 21.1 MB in the beginning and 22.0 MB in the end (delta: -918.5 kB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:13:40,126 INFO L168 Benchmark]: Witness Printer took 69.35 ms. Allocated memory is still 47.7 MB. Free memory was 22.0 MB in the beginning and 18.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:13:40,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 34.1 MB. Free memory was 14.3 MB in the beginning and 14.3 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 294.21 ms. Allocated memory is still 43.5 MB. Free memory was 26.4 MB in the beginning and 15.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 50.01 ms. Allocated memory was 43.5 MB in the beginning and 44.6 MB in the end (delta: 1.0 MB). Free memory was 15.2 MB in the beginning and 25.4 MB in the end (delta: -10.2 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 32.05 ms. Allocated memory is still 44.6 MB. Free memory was 25.4 MB in the beginning and 23.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 428.76 ms. Allocated memory was 44.6 MB in the beginning and 45.6 MB in the end (delta: 1.0 MB). Free memory was 23.7 MB in the beginning and 21.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1064.71 ms. Allocated memory was 45.6 MB in the beginning and 47.7 MB in the end (delta: 2.1 MB). Free memory was 21.1 MB in the beginning and 22.0 MB in the end (delta: -918.5 kB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * Witness Printer took 69.35 ms. Allocated memory is still 47.7 MB. Free memory was 22.0 MB in the beginning and 18.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L30] i=0 VAL [N=1] [L30] COND TRUE i