./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test09.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/test09.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 424e992eac0acb5e0901287d22a3c0d4a0554aed ............................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:58:29,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:58:29,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:58:29,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:58:29,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:58:29,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:58:29,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:58:29,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:58:29,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:58:29,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:58:29,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:58:29,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:58:29,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:58:29,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:58:29,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:58:29,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:58:29,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:58:29,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:58:29,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:58:29,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:58:29,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:58:29,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:58:29,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:58:29,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:58:29,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:58:29,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:58:29,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:58:29,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:58:29,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:58:29,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:58:29,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:58:29,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:58:29,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:58:29,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:58:29,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:58:29,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:58:29,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:58:29,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:58:29,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:58:29,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:58:29,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:58:29,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:58:29,097 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:58:29,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:58:29,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:58:29,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:58:29,099 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:58:29,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:58:29,100 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:58:29,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:58:29,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:58:29,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:58:29,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:58:29,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:58:29,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:58:29,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:58:29,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:58:29,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:58:29,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:58:29,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:58:29,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:58:29,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:58:29,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:58:29,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:58:29,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:58:29,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:58:29,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:58:29,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:58:29,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:58:29,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:58:29,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:58:29,106 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 -> 424e992eac0acb5e0901287d22a3c0d4a0554aed [2020-07-28 17:58:29,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:58:29,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:58:29,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:58:29,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:58:29,440 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:58:29,440 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test09.c [2020-07-28 17:58:29,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614df4642/aa57bc52a08d481cb1609445758339f3/FLAGc293b6da4 [2020-07-28 17:58:30,010 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:58:30,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test09.c [2020-07-28 17:58:30,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614df4642/aa57bc52a08d481cb1609445758339f3/FLAGc293b6da4 [2020-07-28 17:58:30,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614df4642/aa57bc52a08d481cb1609445758339f3 [2020-07-28 17:58:30,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:58:30,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:58:30,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:30,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:58:30,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:58:30,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:30" (1/1) ... [2020-07-28 17:58:30,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed9cefa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30, skipping insertion in model container [2020-07-28 17:58:30,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:30" (1/1) ... [2020-07-28 17:58:30,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:58:30,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:58:30,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:30,665 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:58:30,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:30,702 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:58:30,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30 WrapperNode [2020-07-28 17:58:30,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:30,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:30,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:58:30,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:58:30,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30" (1/1) ... [2020-07-28 17:58:30,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30" (1/1) ... [2020-07-28 17:58:30,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:30,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:58:30,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:58:30,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:58:30,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30" (1/1) ... [2020-07-28 17:58:30,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30" (1/1) ... [2020-07-28 17:58:30,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30" (1/1) ... [2020-07-28 17:58:30,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30" (1/1) ... [2020-07-28 17:58:30,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30" (1/1) ... [2020-07-28 17:58:30,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30" (1/1) ... [2020-07-28 17:58:30,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30" (1/1) ... [2020-07-28 17:58:30,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:58:30,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:58:30,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:58:30,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:58:30,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30" (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 17:58:30,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 17:58:30,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:58:30,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:58:30,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:58:30,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-28 17:58:30,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:58:31,196 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:58:31,196 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:58:31,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:31 BoogieIcfgContainer [2020-07-28 17:58:31,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:58:31,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:58:31,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:58:31,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:58:31,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:58:30" (1/3) ... [2020-07-28 17:58:31,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9bd50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:31, skipping insertion in model container [2020-07-28 17:58:31,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:30" (2/3) ... [2020-07-28 17:58:31,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9bd50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:31, skipping insertion in model container [2020-07-28 17:58:31,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:31" (3/3) ... [2020-07-28 17:58:31,209 INFO L109 eAbstractionObserver]: Analyzing ICFG test09.c [2020-07-28 17:58:31,230 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:58:31,245 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:58:31,261 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:58:31,285 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:58:31,285 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:58:31,285 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:58:31,285 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:58:31,285 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:58:31,286 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:58:31,286 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:58:31,286 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:58:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-07-28 17:58:31,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 17:58:31,304 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:31,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 17:58:31,306 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:31,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:31,311 INFO L82 PathProgramCache]: Analyzing trace with hash 889508715, now seen corresponding path program 1 times [2020-07-28 17:58:31,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:58:31,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173086196] [2020-07-28 17:58:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:58:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:58:31,608 INFO L280 TraceCheckUtils]: 0: Hoare triple {13#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4);~p1~0.base, ~p1~0.offset := 0, 0;~p2~0.base, ~p2~0.offset := 0, 0; {13#true} is VALID [2020-07-28 17:58:31,608 INFO L280 TraceCheckUtils]: 1: Hoare triple {13#true} havoc main_#res;havoc main_#t~mem3, main_#t~post4, main_#t~ret5, main_#t~mem6;~p1~0.base, ~p1~0.offset := ~#a~0.base, ~#a~0.offset;~p2~0.base, ~p2~0.offset := ~#b~0.base, ~#b~0.offset;call write~int(1, ~#b~0.base, ~#b~0.offset, 4);call write~int(5, ~#a~0.base, ~#a~0.offset, 4);call main_#t~mem3 := read~int(~#a~0.base, ~#a~0.offset, 4);main_#t~post4 := main_#t~mem3;call write~int(main_#t~post4 - 1, ~#a~0.base, ~#a~0.offset, 4);havoc main_#t~mem3;havoc main_#t~post4;havoc f_#res;havoc f_#t~mem0, f_#t~mem1, f_#t~mem2, f_~v~0;call f_#t~mem0 := read~int(~p1~0.base, ~p1~0.offset, 4);call f_#t~mem1 := read~int(~p2~0.base, ~p2~0.offset, 4);call f_#t~mem2 := read~int(~#a~0.base, ~#a~0.offset, 4);f_~v~0 := f_#t~mem0 + f_#t~mem1 - f_#t~mem2;havoc f_#t~mem1;havoc f_#t~mem0;havoc f_#t~mem2; {13#true} is VALID [2020-07-28 17:58:31,611 INFO L280 TraceCheckUtils]: 2: Hoare triple {13#true} assume 1 == f_~v~0;~p1~0.base, ~p1~0.offset := ~p2~0.base, ~p2~0.offset;f_#res := f_~v~0; {15#(and (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-28 17:58:31,620 INFO L280 TraceCheckUtils]: 3: Hoare triple {15#(and (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base))} main_#t~ret5 := f_#res;assume -2147483648 <= main_#t~ret5 && main_#t~ret5 <= 2147483647;call write~int(main_#t~ret5, ~#a~0.base, ~#a~0.offset, 4);havoc main_#t~ret5;call write~int(1000, ~p1~0.base, ~p1~0.offset, 4);call main_#t~mem6 := read~int(~p2~0.base, ~p2~0.offset, 4); {16#(= 1000 |ULTIMATE.start_main_#t~mem6|)} is VALID [2020-07-28 17:58:31,621 INFO L280 TraceCheckUtils]: 4: Hoare triple {16#(= 1000 |ULTIMATE.start_main_#t~mem6|)} assume 1000 != main_#t~mem6;havoc main_#t~mem6; {14#false} is VALID [2020-07-28 17:58:31,621 INFO L280 TraceCheckUtils]: 5: Hoare triple {14#false} assume !false; {14#false} is VALID [2020-07-28 17:58:31,624 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 17:58:31,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173086196] [2020-07-28 17:58:31,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:58:31,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 17:58:31,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320359498] [2020-07-28 17:58:31,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-07-28 17:58:31,638 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:58:31,642 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 17:58:31,679 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:31,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 17:58:31,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:58:31,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 17:58:31,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-28 17:58:31,694 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-07-28 17:58:31,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:31,860 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-07-28 17:58:31,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:58:31,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-07-28 17:58:31,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:58:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:58:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-07-28 17:58:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:58:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-07-28 17:58:31,875 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 20 transitions. [2020-07-28 17:58:31,912 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:31,922 INFO L225 Difference]: With dead ends: 20 [2020-07-28 17:58:31,923 INFO L226 Difference]: Without dead ends: 7 [2020-07-28 17:58:31,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-28 17:58:31,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-07-28 17:58:31,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-07-28 17:58:31,959 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:58:31,959 INFO L82 GeneralOperation]: Start isEquivalent. First operand 7 states. Second operand 7 states. [2020-07-28 17:58:31,960 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2020-07-28 17:58:31,961 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2020-07-28 17:58:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:31,962 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-07-28 17:58:31,963 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-07-28 17:58:31,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:31,963 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:31,964 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2020-07-28 17:58:31,964 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2020-07-28 17:58:31,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:31,965 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-07-28 17:58:31,966 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-07-28 17:58:31,966 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:31,966 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:31,966 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:58:31,967 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:58:31,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 17:58:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-07-28 17:58:31,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-07-28 17:58:31,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:58:31,970 INFO L479 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-07-28 17:58:31,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 17:58:31,971 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-07-28 17:58:31,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 17:58:31,971 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:31,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 17:58:31,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:58:31,972 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:31,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:31,972 INFO L82 PathProgramCache]: Analyzing trace with hash 889568297, now seen corresponding path program 1 times [2020-07-28 17:58:31,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:58:31,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625632222] [2020-07-28 17:58:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:58:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:58:32,107 INFO L280 TraceCheckUtils]: 0: Hoare triple {71#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4);~p1~0.base, ~p1~0.offset := 0, 0;~p2~0.base, ~p2~0.offset := 0, 0; {73#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-28 17:58:32,109 INFO L280 TraceCheckUtils]: 1: Hoare triple {73#(not (= |~#b~0.base| |~#a~0.base|))} havoc main_#res;havoc main_#t~mem3, main_#t~post4, main_#t~ret5, main_#t~mem6;~p1~0.base, ~p1~0.offset := ~#a~0.base, ~#a~0.offset;~p2~0.base, ~p2~0.offset := ~#b~0.base, ~#b~0.offset;call write~int(1, ~#b~0.base, ~#b~0.offset, 4);call write~int(5, ~#a~0.base, ~#a~0.offset, 4);call main_#t~mem3 := read~int(~#a~0.base, ~#a~0.offset, 4);main_#t~post4 := main_#t~mem3;call write~int(main_#t~post4 - 1, ~#a~0.base, ~#a~0.offset, 4);havoc main_#t~mem3;havoc main_#t~post4;havoc f_#res;havoc f_#t~mem0, f_#t~mem1, f_#t~mem2, f_~v~0;call f_#t~mem0 := read~int(~p1~0.base, ~p1~0.offset, 4);call f_#t~mem1 := read~int(~p2~0.base, ~p2~0.offset, 4);call f_#t~mem2 := read~int(~#a~0.base, ~#a~0.offset, 4);f_~v~0 := f_#t~mem0 + f_#t~mem1 - f_#t~mem2;havoc f_#t~mem1;havoc f_#t~mem0;havoc f_#t~mem2; {74#(and (<= ULTIMATE.start_f_~v~0 1) (< 0 ULTIMATE.start_f_~v~0))} is VALID [2020-07-28 17:58:32,110 INFO L280 TraceCheckUtils]: 2: Hoare triple {74#(and (<= ULTIMATE.start_f_~v~0 1) (< 0 ULTIMATE.start_f_~v~0))} assume !(1 == f_~v~0);f_#res := 0; {72#false} is VALID [2020-07-28 17:58:32,111 INFO L280 TraceCheckUtils]: 3: Hoare triple {72#false} main_#t~ret5 := f_#res;assume -2147483648 <= main_#t~ret5 && main_#t~ret5 <= 2147483647;call write~int(main_#t~ret5, ~#a~0.base, ~#a~0.offset, 4);havoc main_#t~ret5;call write~int(1000, ~p1~0.base, ~p1~0.offset, 4);call main_#t~mem6 := read~int(~p2~0.base, ~p2~0.offset, 4); {72#false} is VALID [2020-07-28 17:58:32,111 INFO L280 TraceCheckUtils]: 4: Hoare triple {72#false} assume 1000 != main_#t~mem6;havoc main_#t~mem6; {72#false} is VALID [2020-07-28 17:58:32,111 INFO L280 TraceCheckUtils]: 5: Hoare triple {72#false} assume !false; {72#false} is VALID [2020-07-28 17:58:32,112 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 17:58:32,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625632222] [2020-07-28 17:58:32,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:58:32,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-28 17:58:32,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206740683] [2020-07-28 17:58:32,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-07-28 17:58:32,115 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:58:32,115 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 17:58:32,127 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:32,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 17:58:32,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:58:32,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 17:58:32,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-28 17:58:32,128 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 4 states. [2020-07-28 17:58:32,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:32,154 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-07-28 17:58:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:58:32,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-07-28 17:58:32,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:58:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:58:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-07-28 17:58:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:58:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-07-28 17:58:32,157 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 6 transitions. [2020-07-28 17:58:32,168 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:32,168 INFO L225 Difference]: With dead ends: 7 [2020-07-28 17:58:32,169 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:58:32,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-28 17:58:32,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:58:32,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:58:32,171 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:58:32,171 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:32,171 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:32,171 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:32,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:32,172 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:58:32,172 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:32,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:32,173 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:32,173 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:32,173 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:32,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:32,174 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:58:32,174 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:32,174 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:32,174 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:32,174 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:58:32,175 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:58:32,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:58:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:58:32,176 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-07-28 17:58:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:58:32,176 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:58:32,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 17:58:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:32,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:32,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:58:32,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:58:32,210 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:58:32,210 INFO L264 CegarLoopResult]: At program point L32(lines 17 39) the Hoare annotation is: false [2020-07-28 17:58:32,210 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:58:32,211 INFO L268 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-07-28 17:58:32,211 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:58:32,211 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:58:32,211 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 37) no Hoare annotation was computed. [2020-07-28 17:58:32,211 INFO L264 CegarLoopResult]: At program point L13(lines 7 15) the Hoare annotation is: (and (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base)) [2020-07-28 17:58:32,212 INFO L268 CegarLoopResult]: For program point L9(lines 9 14) no Hoare annotation was computed. [2020-07-28 17:58:32,212 INFO L271 CegarLoopResult]: At program point L38(lines 17 39) the Hoare annotation is: true [2020-07-28 17:58:32,217 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:58:32,217 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:58:32,217 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:58:32,217 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:58:32,218 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-28 17:58:32,218 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-28 17:58:32,218 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-28 17:58:32,218 WARN L170 areAnnotationChecker]: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2020-07-28 17:58:32,218 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:58:32,219 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:58:32,219 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:58:32,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:58:32 BoogieIcfgContainer [2020-07-28 17:58:32,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:58:32,233 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:58:32,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:58:32,234 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:58:32,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:31" (3/4) ... [2020-07-28 17:58:32,239 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:58:32,253 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-07-28 17:58:32,253 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 17:58:32,253 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:58:32,308 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:58:32,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:58:32,311 INFO L168 Benchmark]: Toolchain (without parser) took 1874.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 960.2 MB in the beginning and 1.0 GB in the end (delta: -70.8 MB). Peak memory consumption was 62.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:32,312 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:58:32,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.79 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:32,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -175.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:32,314 INFO L168 Benchmark]: Boogie Preprocessor took 22.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:58:32,315 INFO L168 Benchmark]: RCFGBuilder took 372.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:32,315 INFO L168 Benchmark]: TraceAbstraction took 1032.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:32,316 INFO L168 Benchmark]: Witness Printer took 74.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:32,319 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 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 265.79 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 99.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -175.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 372.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1032.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 11.5 GB. * Witness Printer took 74.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: p2 == p1 && p2 == p1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 4 SDslu, 13 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 9 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 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 correct! Received shutdown request...