./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab 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-industry-pattern/aiob_4.c.v+lh-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 c08ad01fb17039d4f6c07f5a5bde8b7195d83520 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:03:22,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:03:22,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:03:22,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:03:22,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:03:22,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:03:22,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:03:22,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:03:22,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:03:22,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:03:22,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:03:22,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:03:22,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:03:22,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:03:22,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:03:22,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:03:22,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:03:22,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:03:22,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:03:22,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:03:22,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:03:22,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:03:22,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:03:22,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:03:22,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:03:22,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:03:22,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:03:22,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:03:22,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:03:22,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:03:22,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:03:22,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:03:22,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:03:22,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:03:22,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:03:22,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:03:22,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:03:22,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:03:22,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:03:22,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:03:22,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:03:22,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:03:22,517 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:03:22,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:03:22,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:03:22,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:03:22,520 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:03:22,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:03:22,521 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:03:22,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:03:22,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:03:22,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:03:22,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:03:22,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:03:22,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:03:22,524 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:03:22,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:03:22,524 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:03:22,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:03:22,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:03:22,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:03:22,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:03:22,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:03:22,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:03:22,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:03:22,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:03:22,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:03:22,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:03:22,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:03:22,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:03:22,528 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 -> c08ad01fb17039d4f6c07f5a5bde8b7195d83520 [2019-11-28 00:03:22,887 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:03:22,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:03:22,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:03:22,908 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:03:22,909 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:03:22,909 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-11-28 00:03:22,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d78f5b14/eb48925435564832ac5f8b5187558e46/FLAG9814c4bf2 [2019-11-28 00:03:23,450 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:03:23,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-11-28 00:03:23,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d78f5b14/eb48925435564832ac5f8b5187558e46/FLAG9814c4bf2 [2019-11-28 00:03:23,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d78f5b14/eb48925435564832ac5f8b5187558e46 [2019-11-28 00:03:23,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:03:23,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:03:23,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:03:23,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:03:23,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:03:23,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:03:23" (1/1) ... [2019-11-28 00:03:23,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709ee9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:23, skipping insertion in model container [2019-11-28 00:03:23,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:03:23" (1/1) ... [2019-11-28 00:03:23,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:03:23,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:03:24,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:03:24,297 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:03:24,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:03:24,392 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:03:24,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:24 WrapperNode [2019-11-28 00:03:24,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:03:24,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:03:24,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:03:24,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:03:24,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:24" (1/1) ... [2019-11-28 00:03:24,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:24" (1/1) ... [2019-11-28 00:03:24,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:03:24,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:03:24,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:03:24,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:03:24,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:24" (1/1) ... [2019-11-28 00:03:24,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:24" (1/1) ... [2019-11-28 00:03:24,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:24" (1/1) ... [2019-11-28 00:03:24,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:24" (1/1) ... [2019-11-28 00:03:24,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:24" (1/1) ... [2019-11-28 00:03:24,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:24" (1/1) ... [2019-11-28 00:03:24,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:24" (1/1) ... [2019-11-28 00:03:24,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:03:24,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:03:24,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:03:24,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:03:24,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:24" (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 00:03:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 00:03:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-11-28 00:03:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-28 00:03:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 00:03:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:03:24,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:03:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 00:03:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 00:03:25,365 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:03:25,366 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 00:03:25,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:03:25 BoogieIcfgContainer [2019-11-28 00:03:25,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:03:25,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:03:25,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:03:25,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:03:25,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:03:23" (1/3) ... [2019-11-28 00:03:25,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b5aa33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:03:25, skipping insertion in model container [2019-11-28 00:03:25,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:24" (2/3) ... [2019-11-28 00:03:25,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b5aa33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:03:25, skipping insertion in model container [2019-11-28 00:03:25,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:03:25" (3/3) ... [2019-11-28 00:03:25,376 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2019-11-28 00:03:25,387 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:03:25,394 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 00:03:25,407 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 00:03:25,431 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:03:25,431 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:03:25,431 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:03:25,432 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:03:25,432 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:03:25,432 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:03:25,433 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:03:25,433 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:03:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-28 00:03:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 00:03:25,454 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:03:25,455 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:03:25,455 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:03:25,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:03:25,462 INFO L82 PathProgramCache]: Analyzing trace with hash 176653045, now seen corresponding path program 1 times [2019-11-28 00:03:25,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:03:25,472 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481424376] [2019-11-28 00:03:25,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:03:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:25,826 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 00:03:25,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481424376] [2019-11-28 00:03:25,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:03:25,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 00:03:25,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763094895] [2019-11-28 00:03:25,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:03:25,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:03:25,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:03:25,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:03:25,852 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-11-28 00:03:25,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:03:25,926 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-28 00:03:25,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 00:03:25,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 00:03:25,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:03:25,943 INFO L225 Difference]: With dead ends: 32 [2019-11-28 00:03:25,943 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 00:03:25,949 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:03:25,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 00:03:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2019-11-28 00:03:25,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 00:03:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-28 00:03:25,983 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2019-11-28 00:03:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:03:25,983 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-28 00:03:25,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:03:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-28 00:03:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 00:03:25,984 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:03:25,985 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:03:25,985 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:03:25,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:03:25,985 INFO L82 PathProgramCache]: Analyzing trace with hash -314667186, now seen corresponding path program 1 times [2019-11-28 00:03:25,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:03:25,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396137390] [2019-11-28 00:03:25,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:03:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:26,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396137390] [2019-11-28 00:03:26,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553839732] [2019-11-28 00:03:26,183 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 00:03:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:26,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 00:03:26,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:03:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:26,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:03:26,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-28 00:03:26,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18051602] [2019-11-28 00:03:26,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:03:26,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:03:26,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:03:26,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:03:26,415 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2019-11-28 00:03:26,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:03:26,548 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-11-28 00:03:26,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:03:26,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-28 00:03:26,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:03:26,550 INFO L225 Difference]: With dead ends: 25 [2019-11-28 00:03:26,550 INFO L226 Difference]: Without dead ends: 22 [2019-11-28 00:03:26,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-28 00:03:26,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-28 00:03:26,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-11-28 00:03:26,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 00:03:26,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-11-28 00:03:26,557 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2019-11-28 00:03:26,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:03:26,557 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-11-28 00:03:26,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:03:26,558 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-11-28 00:03:26,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 00:03:26,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:03:26,559 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 00:03:26,765 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:26,766 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:03:26,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:03:26,767 INFO L82 PathProgramCache]: Analyzing trace with hash 921588373, now seen corresponding path program 2 times [2019-11-28 00:03:26,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:03:26,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781231784] [2019-11-28 00:03:26,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:03:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:26,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781231784] [2019-11-28 00:03:26,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401246577] [2019-11-28 00:03:26,903 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:27,129 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:03:27,129 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:03:27,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 00:03:27,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:03:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:27,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:03:27,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-28 00:03:27,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016618285] [2019-11-28 00:03:27,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 00:03:27,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:03:27,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 00:03:27,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:03:27,200 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2019-11-28 00:03:27,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:03:27,374 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2019-11-28 00:03:27,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 00:03:27,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-28 00:03:27,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:03:27,376 INFO L225 Difference]: With dead ends: 30 [2019-11-28 00:03:27,376 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 00:03:27,377 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-28 00:03:27,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 00:03:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2019-11-28 00:03:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 00:03:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-28 00:03:27,382 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 18 [2019-11-28 00:03:27,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:03:27,382 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-28 00:03:27,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 00:03:27,383 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-28 00:03:27,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-28 00:03:27,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:03:27,384 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-28 00:03:27,590 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:27,590 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:03:27,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:03:27,591 INFO L82 PathProgramCache]: Analyzing trace with hash -590838866, now seen corresponding path program 3 times [2019-11-28 00:03:27,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:03:27,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647709123] [2019-11-28 00:03:27,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:03:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:27,782 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:27,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647709123] [2019-11-28 00:03:27,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756006960] [2019-11-28 00:03:27,783 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:28,004 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-28 00:03:28,030 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:03:28,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-28 00:03:28,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:03:28,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:03:28,156 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-28 00:03:28,157 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 00:03:28,178 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 00:03:28,179 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2019-11-28 00:03:28,180 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-11-28 00:03:28,202 INFO L588 ElimStorePlain]: treesize reduction 5, result has 78.3 percent of original size [2019-11-28 00:03:28,202 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 00:03:28,203 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:18 [2019-11-28 00:03:28,231 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:03:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-28 00:03:28,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:03:28,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2019-11-28 00:03:28,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744371922] [2019-11-28 00:03:28,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 00:03:28,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:03:28,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 00:03:28,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-28 00:03:28,297 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 13 states. [2019-11-28 00:03:29,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:03:29,045 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2019-11-28 00:03:29,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-28 00:03:29,046 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2019-11-28 00:03:29,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:03:29,046 INFO L225 Difference]: With dead ends: 35 [2019-11-28 00:03:29,046 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:03:29,048 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2019-11-28 00:03:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:03:29,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:03:29,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:03:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:03:29,050 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-11-28 00:03:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:03:29,051 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:03:29,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 00:03:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:03:29,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:03:29,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:29,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:03:29,439 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2019-11-28 00:03:29,444 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:03:29,444 INFO L246 CegarLoopResult]: For program point L159(lines 159 234) no Hoare annotation was computed. [2019-11-28 00:03:29,444 INFO L246 CegarLoopResult]: For program point L188(lines 188 206) no Hoare annotation was computed. [2019-11-28 00:03:29,444 INFO L246 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2019-11-28 00:03:29,444 INFO L246 CegarLoopResult]: For program point L217(lines 217 225) no Hoare annotation was computed. [2019-11-28 00:03:29,444 INFO L246 CegarLoopResult]: For program point L180(lines 180 227) no Hoare annotation was computed. [2019-11-28 00:03:29,445 INFO L246 CegarLoopResult]: For program point L178(lines 178 232) no Hoare annotation was computed. [2019-11-28 00:03:29,445 INFO L246 CegarLoopResult]: For program point L195(lines 195 205) no Hoare annotation was computed. [2019-11-28 00:03:29,445 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 00:03:29,445 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:03:29,445 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:03:29,446 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 219) no Hoare annotation was computed. [2019-11-28 00:03:29,446 INFO L242 CegarLoopResult]: At program point L200(lines 165 233) the Hoare annotation is: (let ((.cse0 (= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset|)) (.cse1 (= 0 (select (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492))))) (or (and .cse0 (= ~Id_MCDC_93~0 0) .cse1 (= 0 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0)) (and (<= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 1) .cse0 .cse1 (<= 1 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 3)) (let ((.cse3 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296)) (.cse2 (mod (+ ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296))) (and (< .cse2 42) (< .cse3 42) .cse0 (not (= (* .cse3 12) 492)) (not (= 492 (* .cse2 12))) .cse1)))) [2019-11-28 00:03:29,447 INFO L249 CegarLoopResult]: At program point L231(lines 131 235) the Hoare annotation is: true [2019-11-28 00:03:29,459 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 00:03:29,461 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 00:03:29,461 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 00:03:29,466 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 00:03:29,467 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 00:03:29,467 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 00:03:29,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:03:29 BoogieIcfgContainer [2019-11-28 00:03:29,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:03:29,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:03:29,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:03:29,471 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:03:29,472 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:03:25" (3/4) ... [2019-11-28 00:03:29,475 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:03:29,498 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2019-11-28 00:03:29,499 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-28 00:03:29,499 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:03:29,503 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 00:03:29,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 00:03:29,831 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:03:29,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:03:29,833 INFO L168 Benchmark]: Toolchain (without parser) took 6013.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.1 MB). Free memory was 957.7 MB in the beginning and 968.8 MB in the end (delta: -11.1 MB). Peak memory consumption was 173.9 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:29,833 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:03:29,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -112.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:29,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:29,834 INFO L168 Benchmark]: Boogie Preprocessor took 49.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:29,835 INFO L168 Benchmark]: RCFGBuilder took 845.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 984.2 MB in the end (delta: 72.6 MB). Peak memory consumption was 72.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:29,835 INFO L168 Benchmark]: TraceAbstraction took 4101.62 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 97.0 MB). Free memory was 984.2 MB in the beginning and 1.0 GB in the end (delta: -56.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:29,835 INFO L168 Benchmark]: Witness Printer took 360.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 968.8 MB in the end (delta: 72.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:29,838 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 572.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -112.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 78.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 845.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 984.2 MB in the end (delta: 72.6 MB). Peak memory consumption was 72.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4101.62 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 97.0 MB). Free memory was 984.2 MB in the beginning and 1.0 GB in the end (delta: -56.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. * Witness Printer took 360.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 968.8 MB in the end (delta: 72.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 219]: 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: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 165]: Loop Invariant [2019-11-28 00:03:29,849 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 00:03:29,849 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 00:03:29,849 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 00:03:29,850 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 00:03:29,850 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 00:03:29,851 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((0 == Id_MCDC_89__Id_MCDC_95 && Id_MCDC_93 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 == Id_MCDC_89__Id_MCDC_96) || (((((Id_MCDC_89__Id_MCDC_96 <= 1 && 0 == Id_MCDC_89__Id_MCDC_95) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 1 <= Id_MCDC_89__Id_MCDC_96) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 3)) || ((((((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42 && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && 0 == Id_MCDC_89__Id_MCDC_95) && !((Id_MCDC_93 + 4294967295) % 4294967296 * 12 == 492)) && !(492 == (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 * 12)) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: SAFE, OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 31 SDtfs, 104 SDslu, 58 SDs, 0 SdLazy, 221 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 97 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 151 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 116 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 12413 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1151 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 13/76 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...