./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/array_1-2.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-acceleration/array_1-2.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 dc18d6791d5a51f5782a845009bfa8a1645f2712 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:04:16,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:04:16,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:04:16,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:04:16,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:04:16,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:04:16,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:04:16,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:04:16,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:04:16,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:04:16,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:04:16,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:04:16,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:04:16,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:04:16,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:04:16,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:04:16,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:04:16,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:04:16,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:04:16,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:04:16,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:04:16,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:04:16,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:04:16,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:04:16,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:04:16,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:04:16,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:04:16,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:04:16,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:04:16,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:04:16,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:04:16,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:04:16,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:04:16,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:04:16,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:04:16,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:04:16,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:04:16,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:04:16,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:04:16,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:04:16,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:04:16,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:04:16,860 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:04:16,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:04:16,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:04:16,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:04:16,863 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:04:16,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:04:16,863 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:04:16,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:04:16,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:04:16,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:04:16,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:04:16,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:04:16,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:04:16,866 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:04:16,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:04:16,866 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:04:16,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:04:16,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:04:16,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:04:16,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:04:16,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:04:16,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:04:16,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:04:16,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:04:16,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:04:16,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:04:16,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:04:16,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:04:16,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:04:16,869 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 -> dc18d6791d5a51f5782a845009bfa8a1645f2712 [2019-11-28 17:04:17,220 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:04:17,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:04:17,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:04:17,244 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:04:17,244 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:04:17,246 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/array_1-2.c [2019-11-28 17:04:17,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b030fc7f1/f8f1ddb752a944309984605befcbd86f/FLAG671bfe44d [2019-11-28 17:04:17,807 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:04:17,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array_1-2.c [2019-11-28 17:04:17,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b030fc7f1/f8f1ddb752a944309984605befcbd86f/FLAG671bfe44d [2019-11-28 17:04:18,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b030fc7f1/f8f1ddb752a944309984605befcbd86f [2019-11-28 17:04:18,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:04:18,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:04:18,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:04:18,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:04:18,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:04:18,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:18" (1/1) ... [2019-11-28 17:04:18,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286e58b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18, skipping insertion in model container [2019-11-28 17:04:18,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:18" (1/1) ... [2019-11-28 17:04:18,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:04:18,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:04:18,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:04:18,435 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:04:18,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:04:18,467 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:04:18,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18 WrapperNode [2019-11-28 17:04:18,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:04:18,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:04:18,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:04:18,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:04:18,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18" (1/1) ... [2019-11-28 17:04:18,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18" (1/1) ... [2019-11-28 17:04:18,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:04:18,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:04:18,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:04:18,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:04:18,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18" (1/1) ... [2019-11-28 17:04:18,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18" (1/1) ... [2019-11-28 17:04:18,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18" (1/1) ... [2019-11-28 17:04:18,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18" (1/1) ... [2019-11-28 17:04:18,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18" (1/1) ... [2019-11-28 17:04:18,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18" (1/1) ... [2019-11-28 17:04:18,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18" (1/1) ... [2019-11-28 17:04:18,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:04:18,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:04:18,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:04:18,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:04:18,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18" (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 17:04:18,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 17:04:18,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:04:18,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:04:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 17:04:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 17:04:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 17:04:18,816 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:04:18,817 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 17:04:18,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:18 BoogieIcfgContainer [2019-11-28 17:04:18,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:04:18,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:04:18,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:04:18,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:04:18,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:04:18" (1/3) ... [2019-11-28 17:04:18,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e51956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:18, skipping insertion in model container [2019-11-28 17:04:18,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:18" (2/3) ... [2019-11-28 17:04:18,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e51956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:18, skipping insertion in model container [2019-11-28 17:04:18,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:18" (3/3) ... [2019-11-28 17:04:18,826 INFO L109 eAbstractionObserver]: Analyzing ICFG array_1-2.c [2019-11-28 17:04:18,834 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:04:18,841 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:04:18,853 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:04:18,876 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:04:18,876 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:04:18,876 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:04:18,876 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:04:18,877 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:04:18,877 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:04:18,877 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:04:18,877 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:04:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-28 17:04:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:04:18,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:04:18,900 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:04:18,900 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:04:18,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:04:18,907 INFO L82 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2019-11-28 17:04:18,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:04:18,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472998146] [2019-11-28 17:04:18,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:04:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:04:19,058 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 17:04:19,059 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472998146] [2019-11-28 17:04:19,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:04:19,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:04:19,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848575973] [2019-11-28 17:04:19,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:04:19,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:04:19,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:04:19,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:04:19,088 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2019-11-28 17:04:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:04:19,161 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-11-28 17:04:19,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:04:19,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-28 17:04:19,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:04:19,183 INFO L225 Difference]: With dead ends: 22 [2019-11-28 17:04:19,183 INFO L226 Difference]: Without dead ends: 10 [2019-11-28 17:04:19,190 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:04:19,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-28 17:04:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-28 17:04:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 17:04:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-28 17:04:19,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-11-28 17:04:19,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:04:19,249 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-28 17:04:19,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:04:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-28 17:04:19,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 17:04:19,250 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:04:19,251 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:04:19,251 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:04:19,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:04:19,252 INFO L82 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2019-11-28 17:04:19,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:04:19,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883312602] [2019-11-28 17:04:19,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:04:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:04:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:04:19,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883312602] [2019-11-28 17:04:19,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858083735] [2019-11-28 17:04:19,363 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 17:04:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:04:19,421 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 17:04:19,427 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:04:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:04:19,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:04:19,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-28 17:04:19,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810176387] [2019-11-28 17:04:19,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:04:19,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:04:19,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:04:19,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:04:19,467 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2019-11-28 17:04:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:04:19,498 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-11-28 17:04:19,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:04:19,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-28 17:04:19,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:04:19,500 INFO L225 Difference]: With dead ends: 16 [2019-11-28 17:04:19,500 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 17:04:19,501 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:04:19,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 17:04:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-11-28 17:04:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 17:04:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-28 17:04:19,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-11-28 17:04:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:04:19,506 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-28 17:04:19,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:04:19,506 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-28 17:04:19,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 17:04:19,507 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:04:19,507 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 17:04:19,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:04:19,711 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:04:19,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:04:19,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1489078833, now seen corresponding path program 2 times [2019-11-28 17:04:19,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:04:19,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185940393] [2019-11-28 17:04:19,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:04:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:04:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:04:19,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185940393] [2019-11-28 17:04:19,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764505162] [2019-11-28 17:04:19,796 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 17:04:19,835 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 17:04:19,835 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:04:19,836 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 17:04:19,838 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:04:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:04:19,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:04:19,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-28 17:04:19,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449571341] [2019-11-28 17:04:19,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 17:04:19,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:04:19,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 17:04:19,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:04:19,855 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2019-11-28 17:04:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:04:19,889 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-28 17:04:19,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:04:19,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-28 17:04:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:04:19,891 INFO L225 Difference]: With dead ends: 18 [2019-11-28 17:04:19,891 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 17:04:19,892 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:04:19,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 17:04:19,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-28 17:04:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 17:04:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-28 17:04:19,896 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-11-28 17:04:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:04:19,897 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-28 17:04:19,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 17:04:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-28 17:04:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 17:04:19,898 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:04:19,898 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2019-11-28 17:04:20,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:04:20,105 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:04:20,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:04:20,106 INFO L82 PathProgramCache]: Analyzing trace with hash 833881267, now seen corresponding path program 3 times [2019-11-28 17:04:20,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:04:20,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963143673] [2019-11-28 17:04:20,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:04:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:04:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:04:20,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963143673] [2019-11-28 17:04:20,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803294246] [2019-11-28 17:04:20,214 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 17:04:20,263 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-28 17:04:20,263 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:04:20,264 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 17:04:20,268 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:04:20,313 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-28 17:04:20,314 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 17:04:20,326 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 17:04:20,327 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 17:04:20,327 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-11-28 17:04:20,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:04:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-28 17:04:20,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 17:04:20,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2019-11-28 17:04:20,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247183174] [2019-11-28 17:04:20,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 17:04:20,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:04:20,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 17:04:20,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-28 17:04:20,427 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2019-11-28 17:04:22,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:04:22,552 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-28 17:04:22,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 17:04:22,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 17:04:22,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:04:22,553 INFO L225 Difference]: With dead ends: 13 [2019-11-28 17:04:22,553 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:04:22,554 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-28 17:04:22,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:04:22,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:04:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:04:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:04:22,556 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-11-28 17:04:22,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:04:22,556 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:04:22,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 17:04:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:04:22,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:04:22,757 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:04:22,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:04:22,791 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:04:22,791 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 17:04:22,791 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 17:04:22,791 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:04:22,791 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:04:22,792 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 17:04:22,792 INFO L246 CegarLoopResult]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-11-28 17:04:22,792 INFO L242 CegarLoopResult]: At program point L14-3(lines 14 16) the Hoare annotation is: (or (exists ((v_ULTIMATE.start_main_~i~0_12 Int)) (and (< v_ULTIMATE.start_main_~i~0_12 1024) (= v_ULTIMATE.start_main_~i~0_12 (select (select |#memory_int| |ULTIMATE.start_main_~#A~0.base|) (+ |ULTIMATE.start_main_~#A~0.offset| (* v_ULTIMATE.start_main_~i~0_12 4)))) (<= ULTIMATE.start_main_~i~0 (+ v_ULTIMATE.start_main_~i~0_12 1)))) (= ULTIMATE.start_main_~i~0 0)) [2019-11-28 17:04:22,792 INFO L246 CegarLoopResult]: For program point L14-4(lines 14 16) no Hoare annotation was computed. [2019-11-28 17:04:22,793 INFO L246 CegarLoopResult]: For program point L10(lines 10 19) no Hoare annotation was computed. [2019-11-28 17:04:22,793 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 17:04:22,793 INFO L249 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-28 17:04:22,804 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,805 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,806 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,806 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,809 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 17:04:22,814 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,815 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,815 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,816 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,816 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 17:04:22,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:04:22 BoogieIcfgContainer [2019-11-28 17:04:22,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:04:22,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:04:22,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:04:22,821 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:04:22,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:18" (3/4) ... [2019-11-28 17:04:22,826 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:04:22,838 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-28 17:04:22,839 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 17:04:22,839 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 17:04:22,867 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists v_ULTIMATE.start_main_~i~0_12 : int :: (v_ULTIMATE.start_main_~i~0_12 < 1024 && v_ULTIMATE.start_main_~i~0_12 == unknown-#memory_int-unknown[A][A + v_ULTIMATE.start_main_~i~0_12 * 4]) && i <= v_ULTIMATE.start_main_~i~0_12 + 1) || i == 0 [2019-11-28 17:04:22,882 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:04:22,882 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:04:22,885 INFO L168 Benchmark]: Toolchain (without parser) took 4677.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 959.0 MB in the beginning and 1.0 GB in the end (delta: -57.2 MB). Peak memory consumption was 88.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:22,886 INFO L168 Benchmark]: CDTParser took 0.88 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 17:04:22,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.77 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 948.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:22,887 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -194.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:22,888 INFO L168 Benchmark]: Boogie Preprocessor took 19.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:04:22,889 INFO L168 Benchmark]: RCFGBuilder took 240.66 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:22,890 INFO L168 Benchmark]: TraceAbstraction took 4000.55 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: 88.6 MB). Peak memory consumption was 88.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:22,891 INFO L168 Benchmark]: Witness Printer took 62.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:22,895 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 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 258.77 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 948.3 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 89.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -194.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 240.66 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4000.55 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: 88.6 MB). Peak memory consumption was 88.6 MB. Max. memory is 11.5 GB. * Witness Printer took 62.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] * 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant [2019-11-28 17:04:22,908 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,908 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,909 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,909 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,909 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-28 17:04:22,910 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,910 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,911 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,911 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2019-11-28 17:04:22,912 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (\exists v_ULTIMATE.start_main_~i~0_12 : int :: (v_ULTIMATE.start_main_~i~0_12 < 1024 && v_ULTIMATE.start_main_~i~0_12 == unknown-#memory_int-unknown[A][A + v_ULTIMATE.start_main_~i~0_12 * 4]) && i <= v_ULTIMATE.start_main_~i~0_12 + 1) || i == 0 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 9 SDslu, 34 SDs, 0 SdLazy, 41 SolverSat, 3 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 26 HoareAnnotationTreeSize, 2 FomulaSimplifications, 50 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 59 ConstructedInterpolants, 2 QuantifiedInterpolants, 1549 SizeOfPredicates, 9 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 9/28 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...