./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/const_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/const_1-1.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 82b315f598e4e1fdce3e39725a3239451140271f ........................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:18:15,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:18:15,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:18:15,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:18:15,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:18:15,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:18:15,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:18:15,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:18:15,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:18:15,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:18:15,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:18:15,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:18:15,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:18:15,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:18:15,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:18:15,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:18:15,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:18:15,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:18:15,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:18:15,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:18:15,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:18:15,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:18:15,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:18:15,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:18:15,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:18:15,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:18:15,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:18:15,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:18:15,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:18:15,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:18:15,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:18:15,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:18:15,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:18:15,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:18:15,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:18:15,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:18:15,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:18:15,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:18:15,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:18:15,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:18:15,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:18:15,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:18:15,887 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:18:15,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:18:15,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:18:15,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:18:15,893 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:18:15,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:18:15,894 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:18:15,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:18:15,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:18:15,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:18:15,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:18:15,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:18:15,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:18:15,897 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:18:15,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:18:15,897 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:18:15,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:18:15,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:18:15,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:18:15,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:18:15,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:18:15,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:18:15,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:18:15,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:18:15,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:18:15,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:18:15,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:18:15,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:18:15,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:18:15,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82b315f598e4e1fdce3e39725a3239451140271f [2020-10-25 22:18:16,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:18:16,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:18:16,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:18:16,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:18:16,402 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:18:16,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/const_1-1.c [2020-10-25 22:18:16,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2e8c1f2/e74cf1b1f71142f8b8dc7d0e6e58b210/FLAG1245c5a23 [2020-10-25 22:18:17,150 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:18:17,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/const_1-1.c [2020-10-25 22:18:17,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2e8c1f2/e74cf1b1f71142f8b8dc7d0e6e58b210/FLAG1245c5a23 [2020-10-25 22:18:17,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2e8c1f2/e74cf1b1f71142f8b8dc7d0e6e58b210 [2020-10-25 22:18:17,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:18:17,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:18:17,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:18:17,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:18:17,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:18:17,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:18:17" (1/1) ... [2020-10-25 22:18:17,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7043fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17, skipping insertion in model container [2020-10-25 22:18:17,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:18:17" (1/1) ... [2020-10-25 22:18:17,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:18:17,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:18:17,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:18:17,784 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:18:17,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:18:17,818 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:18:17,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17 WrapperNode [2020-10-25 22:18:17,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:18:17,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:18:17,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:18:17,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:18:17,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17" (1/1) ... [2020-10-25 22:18:17,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17" (1/1) ... [2020-10-25 22:18:17,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:18:17,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:18:17,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:18:17,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:18:17,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17" (1/1) ... [2020-10-25 22:18:17,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17" (1/1) ... [2020-10-25 22:18:17,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17" (1/1) ... [2020-10-25 22:18:17,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17" (1/1) ... [2020-10-25 22:18:17,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17" (1/1) ... [2020-10-25 22:18:17,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17" (1/1) ... [2020-10-25 22:18:17,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17" (1/1) ... [2020-10-25 22:18:17,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:18:17,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:18:17,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:18:17,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:18:17,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:18:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:18:18,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:18:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:18:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:18:18,245 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:18:18,246 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-25 22:18:18,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:18:18 BoogieIcfgContainer [2020-10-25 22:18:18,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:18:18,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:18:18,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:18:18,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:18:18,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:18:17" (1/3) ... [2020-10-25 22:18:18,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c16a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:18:18, skipping insertion in model container [2020-10-25 22:18:18,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:17" (2/3) ... [2020-10-25 22:18:18,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c16a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:18:18, skipping insertion in model container [2020-10-25 22:18:18,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:18:18" (3/3) ... [2020-10-25 22:18:18,259 INFO L111 eAbstractionObserver]: Analyzing ICFG const_1-1.c [2020-10-25 22:18:18,278 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:18:18,285 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:18:18,318 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:18:18,354 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:18:18,354 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:18:18,354 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:18:18,355 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:18:18,355 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:18:18,355 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:18:18,355 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:18:18,356 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:18:18,370 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-25 22:18:18,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 22:18:18,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:18:18,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 22:18:18,379 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:18:18,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:18:18,387 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2020-10-25 22:18:18,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:18:18,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972525037] [2020-10-25 22:18:18,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:18:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:18:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:18:18,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972525037] [2020-10-25 22:18:18,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:18:18,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:18:18,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719765521] [2020-10-25 22:18:18,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:18:18,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:18:18,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:18:18,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:18:18,651 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-10-25 22:18:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:18:18,682 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2020-10-25 22:18:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:18:18,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-25 22:18:18,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:18:18,696 INFO L225 Difference]: With dead ends: 19 [2020-10-25 22:18:18,697 INFO L226 Difference]: Without dead ends: 8 [2020-10-25 22:18:18,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:18:18,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-25 22:18:18,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-25 22:18:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-25 22:18:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-10-25 22:18:18,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-10-25 22:18:18,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:18:18,740 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-10-25 22:18:18,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:18:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-10-25 22:18:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-25 22:18:18,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:18:18,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:18:18,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:18:18,742 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:18:18,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:18:18,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2020-10-25 22:18:18,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:18:18,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124975404] [2020-10-25 22:18:18,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:18:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:18:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:18:18,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124975404] [2020-10-25 22:18:18,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989101395] [2020-10-25 22:18:18,892 INFO L95 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 [2020-10-25 22:18:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:18:18,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-25 22:18:18,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:18:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:18:18,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:18:18,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-25 22:18:18,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955015822] [2020-10-25 22:18:18,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:18:18,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:18:18,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:18:18,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:18:18,983 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-10-25 22:18:19,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:18:19,002 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-10-25 22:18:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:18:19,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-25 22:18:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:18:19,003 INFO L225 Difference]: With dead ends: 13 [2020-10-25 22:18:19,004 INFO L226 Difference]: Without dead ends: 9 [2020-10-25 22:18:19,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:18:19,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-25 22:18:19,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-25 22:18:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-25 22:18:19,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-25 22:18:19,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-10-25 22:18:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:18:19,009 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-25 22:18:19,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:18:19,010 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-25 22:18:19,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:18:19,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:18:19,011 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-25 22:18:19,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-25 22:18:19,222 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:18:19,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:18:19,224 INFO L82 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 2 times [2020-10-25 22:18:19,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:18:19,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564322719] [2020-10-25 22:18:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:18:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:18:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:18:19,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564322719] [2020-10-25 22:18:19,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011342113] [2020-10-25 22:18:19,312 INFO L93 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 [2020-10-25 22:18:19,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 22:18:19,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 22:18:19,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-25 22:18:19,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:18:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:18:19,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:18:19,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-25 22:18:19,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85043733] [2020-10-25 22:18:19,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 22:18:19,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:18:19,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 22:18:19,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:18:19,463 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2020-10-25 22:18:19,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:18:19,489 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-25 22:18:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:18:19,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-25 22:18:19,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:18:19,490 INFO L225 Difference]: With dead ends: 14 [2020-10-25 22:18:19,490 INFO L226 Difference]: Without dead ends: 10 [2020-10-25 22:18:19,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:18:19,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-25 22:18:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-25 22:18:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-25 22:18:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-10-25 22:18:19,495 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-10-25 22:18:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:18:19,496 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-10-25 22:18:19,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 22:18:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-10-25 22:18:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 22:18:19,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:18:19,497 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2020-10-25 22:18:19,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:18:19,710 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:18:19,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:18:19,712 INFO L82 PathProgramCache]: Analyzing trace with hash 492108272, now seen corresponding path program 3 times [2020-10-25 22:18:19,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:18:19,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984784320] [2020-10-25 22:18:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:18:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:18:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:18:19,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984784320] [2020-10-25 22:18:19,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462256450] [2020-10-25 22:18:19,861 INFO L93 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 [2020-10-25 22:18:19,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-25 22:18:19,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 22:18:19,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-25 22:18:19,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:18:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-25 22:18:19,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 22:18:19,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2020-10-25 22:18:19,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974292776] [2020-10-25 22:18:19,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:18:19,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:18:19,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:18:19,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-25 22:18:19,942 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2020-10-25 22:18:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:18:19,965 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-10-25 22:18:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:18:19,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-25 22:18:19,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:18:19,966 INFO L225 Difference]: With dead ends: 10 [2020-10-25 22:18:19,966 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:18:19,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-25 22:18:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:18:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:18:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:18:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:18:19,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-25 22:18:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:18:19,968 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:18:19,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:18:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:18:19,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:18:20,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:18:20,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:18:20,200 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:18:20,201 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-25 22:18:20,201 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 22:18:20,201 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:18:20,201 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:18:20,201 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:18:20,201 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 22:18:20,202 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 19) the Hoare annotation is: (or (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0)) [2020-10-25 22:18:20,202 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-10-25 22:18:20,202 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-25 22:18:20,202 INFO L277 CegarLoopResult]: At program point L6-2(lines 1 22) the Hoare annotation is: true [2020-10-25 22:18:20,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:18:20 BoogieIcfgContainer [2020-10-25 22:18:20,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:18:20,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:18:20,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:18:20,221 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:18:20,222 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:18:18" (3/4) ... [2020-10-25 22:18:20,226 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:18:20,237 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-25 22:18:20,238 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 22:18:20,238 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:18:20,238 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:18:20,286 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:18:20,286 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:18:20,289 INFO L168 Benchmark]: Toolchain (without parser) took 2770.07 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 40.6 MB in the beginning and 40.2 MB in the end (delta: 400.1 kB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2020-10-25 22:18:20,290 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 44.0 MB. Free memory was 24.3 MB in the beginning and 24.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:18:20,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.15 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 34.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:18:20,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.91 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 33.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:18:20,294 INFO L168 Benchmark]: Boogie Preprocessor took 26.01 ms. Allocated memory is still 56.6 MB. Free memory was 33.1 MB in the beginning and 32.2 MB in the end (delta: 892.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:18:20,295 INFO L168 Benchmark]: RCFGBuilder took 360.98 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 33.7 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:18:20,296 INFO L168 Benchmark]: TraceAbstraction took 1969.80 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.3 MB in the beginning and 42.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:18:20,297 INFO L168 Benchmark]: Witness Printer took 66.18 ms. Allocated memory is still 69.2 MB. Free memory was 42.7 MB in the beginning and 40.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:18:20,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 44.0 MB. Free memory was 24.3 MB in the beginning and 24.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.15 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 34.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.91 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 33.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.01 ms. Allocated memory is still 56.6 MB. Free memory was 33.1 MB in the beginning and 32.2 MB in the end (delta: 892.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 360.98 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 33.7 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1969.80 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.3 MB in the beginning and 42.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Witness Printer took 66.18 ms. Allocated memory is still 69.2 MB. Free memory was 42.7 MB in the beginning and 40.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x == 0 || y == 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 1 SDslu, 37 SDs, 0 SdLazy, 30 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 23 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 54 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 893 SizeOfPredicates, 5 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 6/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...