./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test_union.c_1.i --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/ldv-regression/test_union.c_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13bbf08f0aa8fbbbc744b2c745ac9956082f475a .................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:44:18,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:44:18,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:44:18,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:44:18,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:44:18,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:44:18,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:44:18,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:44:18,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:44:18,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:44:18,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:44:18,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:44:18,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:44:18,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:44:18,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:44:18,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:44:18,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:44:18,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:44:18,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:44:18,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:44:18,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:44:18,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:44:18,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:44:18,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:44:18,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:44:18,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:44:18,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:44:18,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:44:18,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:44:18,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:44:18,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:44:18,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:44:18,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:44:18,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:44:18,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:44:18,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:44:18,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:44:18,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:44:18,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:44:18,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:44:18,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:44:18,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:44:18,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:44:18,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:44:18,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:44:18,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:44:18,506 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:44:18,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:44:18,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:44:18,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:44:18,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:44:18,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:44:18,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:44:18,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:44:18,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:44:18,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:44:18,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:44:18,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:44:18,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:44:18,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:44:18,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:44:18,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:44:18,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:44:18,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:44:18,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:44:18,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:44:18,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:44:18,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:44:18,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:44:18,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:44:18,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:44:18,512 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 -> 13bbf08f0aa8fbbbc744b2c745ac9956082f475a [2020-10-20 00:44:18,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:44:18,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:44:18,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:44:18,746 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:44:18,747 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:44:18,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test_union.c_1.i [2020-10-20 00:44:18,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/527c72b76/bae4af8b4ebf4a3e88bdf271c3d6dfd4/FLAG6c94e46eb [2020-10-20 00:44:19,268 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:44:19,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_union.c_1.i [2020-10-20 00:44:19,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/527c72b76/bae4af8b4ebf4a3e88bdf271c3d6dfd4/FLAG6c94e46eb [2020-10-20 00:44:19,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/527c72b76/bae4af8b4ebf4a3e88bdf271c3d6dfd4 [2020-10-20 00:44:19,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:44:19,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:44:19,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:44:19,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:44:19,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:44:19,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:44:19" (1/1) ... [2020-10-20 00:44:19,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a48641a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19, skipping insertion in model container [2020-10-20 00:44:19,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:44:19" (1/1) ... [2020-10-20 00:44:19,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:44:19,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:44:19,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:44:19,926 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:44:19,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:44:19,958 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:44:19,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19 WrapperNode [2020-10-20 00:44:19,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:44:19,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:44:19,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:44:19,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:44:19,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19" (1/1) ... [2020-10-20 00:44:19,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19" (1/1) ... [2020-10-20 00:44:19,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:44:19,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:44:19,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:44:19,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:44:20,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19" (1/1) ... [2020-10-20 00:44:20,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19" (1/1) ... [2020-10-20 00:44:20,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19" (1/1) ... [2020-10-20 00:44:20,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19" (1/1) ... [2020-10-20 00:44:20,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19" (1/1) ... [2020-10-20 00:44:20,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19" (1/1) ... [2020-10-20 00:44:20,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19" (1/1) ... [2020-10-20 00:44:20,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:44:20,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:44:20,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:44:20,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:44:20,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19" (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 [2020-10-20 00:44:20,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:44:20,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:44:20,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:44:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:44:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:44:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:44:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:44:20,287 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:44:20,287 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 00:44:20,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:44:20 BoogieIcfgContainer [2020-10-20 00:44:20,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:44:20,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:44:20,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:44:20,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:44:20,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:44:19" (1/3) ... [2020-10-20 00:44:20,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e646e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:44:20, skipping insertion in model container [2020-10-20 00:44:20,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:19" (2/3) ... [2020-10-20 00:44:20,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e646e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:44:20, skipping insertion in model container [2020-10-20 00:44:20,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:44:20" (3/3) ... [2020-10-20 00:44:20,300 INFO L111 eAbstractionObserver]: Analyzing ICFG test_union.c_1.i [2020-10-20 00:44:20,314 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:44:20,323 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:44:20,339 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:44:20,380 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:44:20,381 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:44:20,381 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:44:20,381 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:44:20,381 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:44:20,382 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:44:20,382 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:44:20,382 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:44:20,402 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-20 00:44:20,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 00:44:20,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:44:20,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 00:44:20,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:44:20,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:44:20,420 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-10-20 00:44:20,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:44:20,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868695327] [2020-10-20 00:44:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:44:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:44:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:44:20,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868695327] [2020-10-20 00:44:20,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:44:20,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:44:20,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122929063] [2020-10-20 00:44:20,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:44:20,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:44:20,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:44:20,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:44:20,637 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-10-20 00:44:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:44:20,686 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-10-20 00:44:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:44:20,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-20 00:44:20,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:44:20,695 INFO L225 Difference]: With dead ends: 14 [2020-10-20 00:44:20,695 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:44:20,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:44:20,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:44:20,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:44:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:44:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:44:20,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-10-20 00:44:20,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:44:20,721 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:44:20,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:44:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:44:20,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:44:20,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:44:20,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:44:20,728 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:44:20,728 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:44:20,728 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:44:20,728 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-20 00:44:20,729 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:44:20,729 INFO L274 CegarLoopResult]: For program point L25(lines 25 33) no Hoare annotation was computed. [2020-10-20 00:44:20,729 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:44:20,729 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-20 00:44:20,729 INFO L274 CegarLoopResult]: For program point L6(lines 1 33) no Hoare annotation was computed. [2020-10-20 00:44:20,730 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:44:20,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:44:20 BoogieIcfgContainer [2020-10-20 00:44:20,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:44:20,735 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:44:20,735 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:44:20,736 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:44:20,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:44:20" (3/4) ... [2020-10-20 00:44:20,741 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:44:20,752 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-20 00:44:20,752 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 00:44:20,753 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 00:44:20,753 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:44:20,789 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:44:20,790 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:44:20,792 INFO L168 Benchmark]: Toolchain (without parser) took 1172.60 ms. Allocated memory was 36.2 MB in the beginning and 45.6 MB in the end (delta: 9.4 MB). Free memory was 10.2 MB in the beginning and 18.5 MB in the end (delta: -8.3 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:20,794 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 35.7 MB. Free memory was 14.6 MB in the beginning and 14.6 MB in the end (delta: 47.2 kB). Peak memory consumption was 47.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:44:20,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.17 ms. Allocated memory was 36.2 MB in the beginning and 44.0 MB in the end (delta: 7.9 MB). Free memory was 9.4 MB in the beginning and 27.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:20,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.69 ms. Allocated memory is still 44.0 MB. Free memory was 27.3 MB in the beginning and 25.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:20,796 INFO L168 Benchmark]: Boogie Preprocessor took 21.67 ms. Allocated memory is still 44.0 MB. Free memory was 25.7 MB in the beginning and 24.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:20,797 INFO L168 Benchmark]: RCFGBuilder took 272.87 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 24.5 MB in the beginning and 26.1 MB in the end (delta: -1.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:20,798 INFO L168 Benchmark]: TraceAbstraction took 443.21 ms. Allocated memory is still 45.6 MB. Free memory was 25.6 MB in the beginning and 21.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:20,799 INFO L168 Benchmark]: Witness Printer took 54.47 ms. Allocated memory is still 45.6 MB. Free memory was 21.2 MB in the beginning and 18.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:20,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 35.7 MB. Free memory was 14.6 MB in the beginning and 14.6 MB in the end (delta: 47.2 kB). Peak memory consumption was 47.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 333.17 ms. Allocated memory was 36.2 MB in the beginning and 44.0 MB in the end (delta: 7.9 MB). Free memory was 9.4 MB in the beginning and 27.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 35.69 ms. Allocated memory is still 44.0 MB. Free memory was 27.3 MB in the beginning and 25.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 21.67 ms. Allocated memory is still 44.0 MB. Free memory was 25.7 MB in the beginning and 24.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 272.87 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 24.5 MB in the beginning and 26.1 MB in the end (delta: -1.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 443.21 ms. Allocated memory is still 45.6 MB. Free memory was 25.6 MB in the beginning and 21.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. * Witness Printer took 54.47 ms. Allocated memory is still 45.6 MB. Free memory was 21.2 MB in the beginning and 18.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...