./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.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 c8a6493762f89d18a23d3a0b9dc19677bd5f4752 ................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:06:49,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:06:49,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:06:49,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:06:49,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:06:49,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:06:49,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:06:49,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:06:49,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:06:49,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:06:49,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:06:49,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:06:49,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:06:49,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:06:49,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:06:49,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:06:49,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:06:49,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:06:49,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:06:49,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:06:49,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:06:49,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:06:49,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:06:49,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:06:49,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:06:49,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:06:49,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:06:49,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:06:49,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:06:49,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:06:49,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:06:49,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:06:49,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:06:49,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:06:49,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:06:49,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:06:49,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:06:49,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:06:49,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:06:49,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:06:49,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:06:49,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:06:49,639 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:06:49,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:06:49,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:06:49,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:06:49,642 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:06:49,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:06:49,642 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:06:49,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:06:49,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:06:49,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:06:49,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:06:49,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:06:49,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:06:49,644 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:06:49,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:06:49,644 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:06:49,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:06:49,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:06:49,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:06:49,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:06:49,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:06:49,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:06:49,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:06:49,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:06:49,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:06:49,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:06:49,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:06:49,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:06:49,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:06:49,649 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 -> c8a6493762f89d18a23d3a0b9dc19677bd5f4752 [2019-11-28 17:06:49,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:06:49,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:06:49,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:06:49,979 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:06:49,980 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:06:49,981 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-11-28 17:06:50,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082c3ab35/718b55871518443ea27046ce13014ff6/FLAG1e4be24bf [2019-11-28 17:06:50,495 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:06:50,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-11-28 17:06:50,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082c3ab35/718b55871518443ea27046ce13014ff6/FLAG1e4be24bf [2019-11-28 17:06:50,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082c3ab35/718b55871518443ea27046ce13014ff6 [2019-11-28 17:06:50,859 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:06:50,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:06:50,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:50,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:06:50,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:06:50,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:50" (1/1) ... [2019-11-28 17:06:50,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164a7f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:50, skipping insertion in model container [2019-11-28 17:06:50,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:50" (1/1) ... [2019-11-28 17:06:50,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:06:50,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:06:51,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:51,106 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:06:51,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:51,137 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:06:51,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51 WrapperNode [2019-11-28 17:06:51,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:51,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:51,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:06:51,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:06:51,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51" (1/1) ... [2019-11-28 17:06:51,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51" (1/1) ... [2019-11-28 17:06:51,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:51,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:06:51,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:06:51,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:06:51,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51" (1/1) ... [2019-11-28 17:06:51,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51" (1/1) ... [2019-11-28 17:06:51,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51" (1/1) ... [2019-11-28 17:06:51,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51" (1/1) ... [2019-11-28 17:06:51,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51" (1/1) ... [2019-11-28 17:06:51,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51" (1/1) ... [2019-11-28 17:06:51,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51" (1/1) ... [2019-11-28 17:06:51,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:06:51,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:06:51,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:06:51,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:06:51,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:06:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:06:51,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:06:51,491 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:06:51,492 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 17:06:51,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:51 BoogieIcfgContainer [2019-11-28 17:06:51,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:06:51,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:06:51,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:06:51,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:06:51,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:06:50" (1/3) ... [2019-11-28 17:06:51,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7368d801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:51, skipping insertion in model container [2019-11-28 17:06:51,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51" (2/3) ... [2019-11-28 17:06:51,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7368d801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:51, skipping insertion in model container [2019-11-28 17:06:51,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:51" (3/3) ... [2019-11-28 17:06:51,500 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2019-11-28 17:06:51,507 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:06:51,513 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:06:51,525 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:06:51,550 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:06:51,550 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:06:51,551 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:06:51,551 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:06:51,551 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:06:51,551 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:06:51,551 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:06:51,551 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:06:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-28 17:06:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 17:06:51,570 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:51,571 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:51,572 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:51,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:51,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1269629357, now seen corresponding path program 1 times [2019-11-28 17:06:51,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:51,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669991641] [2019-11-28 17:06:51,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:51,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669991641] [2019-11-28 17:06:51,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:51,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 17:06:51,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340057360] [2019-11-28 17:06:51,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:06:51,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:51,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:06:51,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:06:51,785 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 5 states. [2019-11-28 17:06:51,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:51,927 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-11-28 17:06:51,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 17:06:51,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-28 17:06:51,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:51,938 INFO L225 Difference]: With dead ends: 30 [2019-11-28 17:06:51,939 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 17:06:51,942 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:06:51,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 17:06:51,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 17:06:51,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 17:06:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-28 17:06:51,975 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2019-11-28 17:06:51,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:51,975 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-28 17:06:51,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:06:51,975 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-28 17:06:51,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 17:06:51,976 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:51,976 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:51,977 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:51,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:51,977 INFO L82 PathProgramCache]: Analyzing trace with hash 341011600, now seen corresponding path program 1 times [2019-11-28 17:06:51,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:51,978 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796999426] [2019-11-28 17:06:51,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:52,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796999426] [2019-11-28 17:06:52,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530628058] [2019-11-28 17:06:52,073 INFO L94 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 [2019-11-28 17:06:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:52,121 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 17:06:52,134 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:52,215 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:06:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:52,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:06:52,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-11-28 17:06:52,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223892924] [2019-11-28 17:06:52,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 17:06:52,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:52,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 17:06:52,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-28 17:06:52,249 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2019-11-28 17:06:52,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:52,408 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-28 17:06:52,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 17:06:52,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-11-28 17:06:52,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:52,409 INFO L225 Difference]: With dead ends: 15 [2019-11-28 17:06:52,409 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:06:52,411 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:06:52,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:06:52,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:06:52,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:06:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:06:52,412 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-28 17:06:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:52,412 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:06:52,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 17:06:52,412 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:06:52,412 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:06:52,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:52,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:06:52,710 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:06:52,711 INFO L246 CegarLoopResult]: For program point L27(lines 27 66) no Hoare annotation was computed. [2019-11-28 17:06:52,711 INFO L246 CegarLoopResult]: For program point L21(lines 21 67) no Hoare annotation was computed. [2019-11-28 17:06:52,713 INFO L246 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2019-11-28 17:06:52,713 INFO L246 CegarLoopResult]: For program point L50(lines 50 59) no Hoare annotation was computed. [2019-11-28 17:06:52,713 INFO L246 CegarLoopResult]: For program point L15(lines 15 68) no Hoare annotation was computed. [2019-11-28 17:06:52,713 INFO L242 CegarLoopResult]: At program point L65(lines 9 69) the Hoare annotation is: (or (not (= 0 ULTIMATE.start_main_~__VERIFIER_assert__cond~0)) (<= (+ ULTIMATE.start_main_~main__x~0 50) 0)) [2019-11-28 17:06:52,714 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 17:06:52,714 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:06:52,714 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:06:52,714 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2019-11-28 17:06:52,714 INFO L242 CegarLoopResult]: At program point L41(lines 28 62) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~main__x~0 51) ULTIMATE.start_main_~main__y~0) (and (<= (+ ULTIMATE.start_main_~main__x~0 2) ULTIMATE.start_main_~main__y~0) (<= (+ ULTIMATE.start_main_~main__x~0 4) (* 2 ULTIMATE.start_main_~main__y~0)))) [2019-11-28 17:06:52,715 INFO L246 CegarLoopResult]: For program point L35(lines 35 61) no Hoare annotation was computed. [2019-11-28 17:06:52,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:06:52 BoogieIcfgContainer [2019-11-28 17:06:52,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:06:52,733 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:06:52,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:06:52,733 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:06:52,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:51" (3/4) ... [2019-11-28 17:06:52,738 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:06:52,749 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 17:06:52,750 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 17:06:52,803 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:06:52,803 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:06:52,806 INFO L168 Benchmark]: Toolchain (without parser) took 1944.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 956.3 MB in the beginning and 1.0 GB in the end (delta: -92.7 MB). Peak memory consumption was 43.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:52,806 INFO L168 Benchmark]: CDTParser took 0.93 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:06:52,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.47 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:52,807 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.36 ms. Allocated memory is still 1.0 GB. Free memory is still 945.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:06:52,808 INFO L168 Benchmark]: Boogie Preprocessor took 76.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:52,809 INFO L168 Benchmark]: RCFGBuilder took 244.56 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: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:52,809 INFO L168 Benchmark]: TraceAbstraction took 1238.51 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: 64.4 MB). Peak memory consumption was 64.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:52,810 INFO L168 Benchmark]: Witness Printer took 70.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:06:52,813 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 273.47 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.36 ms. Allocated memory is still 1.0 GB. Free memory is still 945.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 244.56 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: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1238.51 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: 64.4 MB). Peak memory consumption was 64.4 MB. Max. memory is 11.5 GB. * Witness Printer took 70.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: 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: 9]: Loop Invariant Derived loop invariant: !(0 == __VERIFIER_assert__cond) || main__x + 50 <= 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: main__x + 51 <= main__y || (main__x + 2 <= main__y && main__x + 4 <= 2 * main__y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 19 SDslu, 41 SDs, 0 SdLazy, 47 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 29 HoareAnnotationTreeSize, 2 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 1018 SizeOfPredicates, 4 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...