./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 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/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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0edc3db25587eb2dcb44164977e2a8fa1ed85700 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:18:04,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:18:04,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:18:05,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:18:05,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:18:05,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:18:05,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:18:05,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:18:05,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:18:05,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:18:05,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:18:05,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:18:05,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:18:05,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:18:05,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:18:05,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:18:05,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:18:05,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:18:05,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:18:05,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:18:05,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:18:05,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:18:05,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:18:05,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:18:05,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:18:05,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:18:05,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:18:05,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:18:05,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:18:05,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:18:05,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:18:05,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:18:05,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:18:05,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:18:05,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:18:05,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:18:05,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:18:05,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:18:05,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:18:05,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:18:05,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:18:05,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:18:05,095 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:18:05,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:18:05,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:18:05,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:18:05,097 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:18:05,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:18:05,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:18:05,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:18:05,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:18:05,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:18:05,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:18:05,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:18:05,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:18:05,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:18:05,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:18:05,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:18:05,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:18:05,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:18:05,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:18:05,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:18:05,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:18:05,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:18:05,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:18:05,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:18:05,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:18:05,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:18:05,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:18:05,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:18:05,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:18:05,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0edc3db25587eb2dcb44164977e2a8fa1ed85700 [2020-10-25 22:18:05,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:18:05,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:18:05,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:18:05,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:18:05,546 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:18:05,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/array_1-2.c [2020-10-25 22:18:05,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f0f1402/ebd25b13aac246c1940816e75ac610c6/FLAG60fab4eb8 [2020-10-25 22:18:06,359 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:18:06,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array_1-2.c [2020-10-25 22:18:06,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f0f1402/ebd25b13aac246c1940816e75ac610c6/FLAG60fab4eb8 [2020-10-25 22:18:06,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f0f1402/ebd25b13aac246c1940816e75ac610c6 [2020-10-25 22:18:06,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:18:06,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:18:06,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:18:06,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:18:06,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:18:06,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:18:06" (1/1) ... [2020-10-25 22:18:06,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697c8adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06, skipping insertion in model container [2020-10-25 22:18:06,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:18:06" (1/1) ... [2020-10-25 22:18:06,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:18:06,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:18:06,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:18:06,944 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:18:06,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:18:06,982 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:18:06,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06 WrapperNode [2020-10-25 22:18:06,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:18:06,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:18:06,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:18:06,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:18:06,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06" (1/1) ... [2020-10-25 22:18:07,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06" (1/1) ... [2020-10-25 22:18:07,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:18:07,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:18:07,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:18:07,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:18:07,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06" (1/1) ... [2020-10-25 22:18:07,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06" (1/1) ... [2020-10-25 22:18:07,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06" (1/1) ... [2020-10-25 22:18:07,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06" (1/1) ... [2020-10-25 22:18:07,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06" (1/1) ... [2020-10-25 22:18:07,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06" (1/1) ... [2020-10-25 22:18:07,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06" (1/1) ... [2020-10-25 22:18:07,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:18:07,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:18:07,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:18:07,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:18:07,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06" (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 22:18:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:18:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:18:07,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:18:07,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:18:07,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:18:07,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:18:07,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:18:07,428 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:18:07,429 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-25 22:18:07,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:18:07 BoogieIcfgContainer [2020-10-25 22:18:07,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:18:07,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:18:07,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:18:07,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:18:07,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:18:06" (1/3) ... [2020-10-25 22:18:07,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554956a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:18:07, skipping insertion in model container [2020-10-25 22:18:07,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:18:06" (2/3) ... [2020-10-25 22:18:07,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554956a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:18:07, skipping insertion in model container [2020-10-25 22:18:07,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:18:07" (3/3) ... [2020-10-25 22:18:07,441 INFO L111 eAbstractionObserver]: Analyzing ICFG array_1-2.c [2020-10-25 22:18:07,454 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:18:07,459 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:18:07,476 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:18:07,549 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:18:07,549 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:18:07,549 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:18:07,550 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:18:07,550 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:18:07,550 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:18:07,553 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:18:07,553 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:18:07,583 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-25 22:18:07,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 22:18:07,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:18:07,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 22:18:07,590 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:18:07,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:18:07,597 INFO L82 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2020-10-25 22:18:07,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:18:07,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637204634] [2020-10-25 22:18:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:18:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:18:07,806 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 22:18:07,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637204634] [2020-10-25 22:18:07,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:18:07,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:18:07,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619548124] [2020-10-25 22:18:07,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:18:07,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:18:07,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:18:07,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:18:07,834 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-10-25 22:18:07,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:18:07,873 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2020-10-25 22:18:07,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:18:07,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-25 22:18:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:18:07,885 INFO L225 Difference]: With dead ends: 23 [2020-10-25 22:18:07,886 INFO L226 Difference]: Without dead ends: 10 [2020-10-25 22:18:07,889 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 22:18:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-25 22:18:07,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-10-25 22:18:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-25 22:18:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-25 22:18:07,936 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2020-10-25 22:18:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:18:07,938 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-25 22:18:07,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:18:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-25 22:18:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:18:07,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:18:07,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:18:07,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:18:07,940 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:18:07,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:18:07,945 INFO L82 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2020-10-25 22:18:07,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:18:07,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906221998] [2020-10-25 22:18:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:18:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:18:08,046 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 22:18:08,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906221998] [2020-10-25 22:18:08,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199765347] [2020-10-25 22:18:08,047 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 22:18:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:18:08,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 22:18:08,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:18:08,218 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 22:18:08,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:18:08,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-25 22:18:08,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696019859] [2020-10-25 22:18:08,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:18:08,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:18:08,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:18:08,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:18:08,223 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2020-10-25 22:18:08,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:18:08,261 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-25 22:18:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:18:08,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-25 22:18:08,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:18:08,262 INFO L225 Difference]: With dead ends: 16 [2020-10-25 22:18:08,262 INFO L226 Difference]: Without dead ends: 12 [2020-10-25 22:18:08,263 INFO L677 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 [2020-10-25 22:18:08,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-25 22:18:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-10-25 22:18:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-25 22:18:08,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-25 22:18:08,266 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-10-25 22:18:08,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:18:08,267 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-25 22:18:08,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:18:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-25 22:18:08,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 22:18:08,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:18:08,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-10-25 22:18:08,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-25 22:18:08,479 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:18:08,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:18:08,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1489078833, now seen corresponding path program 2 times [2020-10-25 22:18:08,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:18:08,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307072223] [2020-10-25 22:18:08,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:18:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:18:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:18:08,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307072223] [2020-10-25 22:18:08,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026821183] [2020-10-25 22:18:08,563 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 22:18:08,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 22:18:08,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 22:18:08,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 22:18:08,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:18:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:18:08,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:18:08,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-25 22:18:08,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222614747] [2020-10-25 22:18:08,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 22:18:08,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:18:08,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 22:18:08,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:18:08,689 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2020-10-25 22:18:08,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:18:08,740 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-25 22:18:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:18:08,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-25 22:18:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:18:08,742 INFO L225 Difference]: With dead ends: 18 [2020-10-25 22:18:08,742 INFO L226 Difference]: Without dead ends: 14 [2020-10-25 22:18:08,743 INFO L677 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 [2020-10-25 22:18:08,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-25 22:18:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-25 22:18:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-25 22:18:08,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-25 22:18:08,747 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-10-25 22:18:08,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:18:08,748 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-25 22:18:08,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 22:18:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-25 22:18:08,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 22:18:08,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:18:08,749 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2020-10-25 22:18:08,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:18:08,962 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:18:08,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:18:08,964 INFO L82 PathProgramCache]: Analyzing trace with hash 833881267, now seen corresponding path program 3 times [2020-10-25 22:18:08,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:18:08,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68621788] [2020-10-25 22:18:08,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:18:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:18:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:18:09,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68621788] [2020-10-25 22:18:09,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123526085] [2020-10-25 22:18:09,034 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 22:18:09,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-25 22:18:09,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 22:18:09,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-25 22:18:09,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:18:09,150 INFO L384 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 [2020-10-25 22:18:09,151 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-25 22:18:09,160 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:18:09,161 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-25 22:18:09,161 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-10-25 22:18:09,277 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:18:09,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:18:09,293 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:18:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-25 22:18:09,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 22:18:09,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2020-10-25 22:18:09,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101193710] [2020-10-25 22:18:09,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 22:18:09,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:18:09,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 22:18:09,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-25 22:18:09,365 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2020-10-25 22:18:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:18:11,516 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-10-25 22:18:11,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 22:18:11,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-25 22:18:11,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:18:11,516 INFO L225 Difference]: With dead ends: 13 [2020-10-25 22:18:11,517 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:18:11,518 INFO L677 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 [2020-10-25 22:18:11,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:18:11,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:18:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:18:11,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:18:11,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-25 22:18:11,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:18:11,519 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:18:11,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 22:18:11,519 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:18:11,519 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:18:11,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:18:11,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:18:11,772 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:18:11,773 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-25 22:18:11,773 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 22:18:11,773 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:18:11,773 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:18:11,773 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:18:11,773 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 22:18:11,773 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 18) no Hoare annotation was computed. [2020-10-25 22:18:11,774 INFO L270 CegarLoopResult]: At program point L16-3(lines 16 18) the Hoare annotation is: (or (= ULTIMATE.start_main_~i~0 0) (exists ((v_ULTIMATE.start_main_~i~0_12 Int)) (and (<= ULTIMATE.start_main_~i~0 (+ v_ULTIMATE.start_main_~i~0_12 1)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0.base|) (+ |ULTIMATE.start_main_~#A~0.offset| (* v_ULTIMATE.start_main_~i~0_12 4))) v_ULTIMATE.start_main_~i~0_12) (< v_ULTIMATE.start_main_~i~0_12 1024)))) [2020-10-25 22:18:11,774 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 18) no Hoare annotation was computed. [2020-10-25 22:18:11,774 INFO L274 CegarLoopResult]: For program point L12(lines 12 21) no Hoare annotation was computed. [2020-10-25 22:18:11,774 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-25 22:18:11,775 INFO L277 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-10-25 22:18:11,788 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,789 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,789 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,790 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,793 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-25 22:18:11,800 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,801 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,801 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,802 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-25 22:18:11,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:18:11 BoogieIcfgContainer [2020-10-25 22:18:11,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:18:11,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:18:11,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:18:11,811 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:18:11,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:18:07" (3/4) ... [2020-10-25 22:18:11,817 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:18:11,833 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-25 22:18:11,834 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 22:18:11,834 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-25 22:18:11,835 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:18:11,869 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: i == 0 || (\exists v_ULTIMATE.start_main_~i~0_12 : int :: (i <= v_ULTIMATE.start_main_~i~0_12 + 1 && unknown-#memory_int-unknown[A][A + v_ULTIMATE.start_main_~i~0_12 * 4] == v_ULTIMATE.start_main_~i~0_12) && v_ULTIMATE.start_main_~i~0_12 < 1024) [2020-10-25 22:18:11,895 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:18:11,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:18:11,899 INFO L168 Benchmark]: Toolchain (without parser) took 5183.42 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 41.9 MB in the beginning and 52.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:18:11,899 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 46.1 MB. Free memory was 27.9 MB in the beginning and 27.9 MB in the end (delta: 27.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:18:11,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.30 ms. Allocated memory is still 65.0 MB. Free memory was 41.2 MB in the beginning and 32.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:18:11,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.43 ms. Allocated memory is still 65.0 MB. Free memory was 32.0 MB in the beginning and 30.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:18:11,906 INFO L168 Benchmark]: Boogie Preprocessor took 71.91 ms. Allocated memory is still 65.0 MB. Free memory was 30.7 MB in the beginning and 49.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:18:11,907 INFO L168 Benchmark]: RCFGBuilder took 333.34 ms. Allocated memory is still 65.0 MB. Free memory was 48.8 MB in the beginning and 37.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-25 22:18:11,909 INFO L168 Benchmark]: TraceAbstraction took 4376.97 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 37.5 MB in the beginning and 54.3 MB in the end (delta: -16.8 MB). Peak memory consumption was 31.4 kB. Max. memory is 16.1 GB. [2020-10-25 22:18:11,909 INFO L168 Benchmark]: Witness Printer took 86.62 ms. Allocated memory is still 79.7 MB. Free memory was 54.3 MB in the beginning and 52.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:18:11,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 46.1 MB. Free memory was 27.9 MB in the beginning and 27.9 MB in the end (delta: 27.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.30 ms. Allocated memory is still 65.0 MB. Free memory was 41.2 MB in the beginning and 32.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.43 ms. Allocated memory is still 65.0 MB. Free memory was 32.0 MB in the beginning and 30.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.91 ms. Allocated memory is still 65.0 MB. Free memory was 30.7 MB in the beginning and 49.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 333.34 ms. Allocated memory is still 65.0 MB. Free memory was 48.8 MB in the beginning and 37.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4376.97 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 37.5 MB in the beginning and 54.3 MB in the end (delta: -16.8 MB). Peak memory consumption was 31.4 kB. Max. memory is 16.1 GB. * Witness Printer took 86.62 ms. Allocated memory is still 79.7 MB. Free memory was 54.3 MB in the beginning and 52.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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: 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 [2020-10-25 22:18:11,928 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,928 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,928 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,928 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-25 22:18:11,929 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,929 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,929 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,930 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2020-10-25 22:18:11,930 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: i == 0 || (\exists v_ULTIMATE.start_main_~i~0_12 : int :: (i <= v_ULTIMATE.start_main_~i~0_12 + 1 && unknown-#memory_int-unknown[A][A + v_ULTIMATE.start_main_~i~0_12 * 4] == v_ULTIMATE.start_main_~i~0_12) && v_ULTIMATE.start_main_~i~0_12 < 1024) - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 9 SDslu, 31 SDs, 0 SdLazy, 44 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=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, 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, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 66 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 59 ConstructedInterpolants, 2 QuantifiedInterpolants, 1549 SizeOfPredicates, 9 NumberOfNonLiveVariables, 173 ConjunctsInSsa, 16 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...