./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_b2_o3.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/recursive-simple/id_b2_o3.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 6d9304edeab15e85170ca5853f26517d34908a3d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 23:11:47,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 23:11:47,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 23:11:47,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 23:11:47,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 23:11:47,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 23:11:47,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 23:11:47,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 23:11:47,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 23:11:47,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 23:11:47,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 23:11:47,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 23:11:47,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 23:11:47,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 23:11:47,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 23:11:47,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 23:11:47,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 23:11:47,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 23:11:47,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 23:11:47,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 23:11:47,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 23:11:47,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 23:11:47,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 23:11:47,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 23:11:47,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 23:11:47,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 23:11:47,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 23:11:47,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 23:11:47,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 23:11:47,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 23:11:47,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 23:11:47,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 23:11:47,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 23:11:47,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 23:11:47,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 23:11:47,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 23:11:47,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 23:11:47,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 23:11:47,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 23:11:47,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 23:11:47,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 23:11:47,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 23:11:47,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 23:11:47,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 23:11:47,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 23:11:47,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 23:11:47,801 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 23:11:47,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 23:11:47,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 23:11:47,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 23:11:47,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 23:11:47,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 23:11:47,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 23:11:47,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 23:11:47,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 23:11:47,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 23:11:47,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 23:11:47,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 23:11:47,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 23:11:47,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 23:11:47,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 23:11:47,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 23:11:47,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 23:11:47,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:11:47,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 23:11:47,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 23:11:47,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 23:11:47,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 23:11:47,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 23:11:47,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 23:11:47,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 23:11:47,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9304edeab15e85170ca5853f26517d34908a3d [2020-10-25 23:11:48,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 23:11:48,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 23:11:48,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 23:11:48,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 23:11:48,276 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 23:11:48,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b2_o3.c [2020-10-25 23:11:48,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f39444b8/cf988afbf27d494ba643965c2069e6df/FLAG7587dbfe2 [2020-10-25 23:11:49,060 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 23:11:49,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b2_o3.c [2020-10-25 23:11:49,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f39444b8/cf988afbf27d494ba643965c2069e6df/FLAG7587dbfe2 [2020-10-25 23:11:49,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f39444b8/cf988afbf27d494ba643965c2069e6df [2020-10-25 23:11:49,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 23:11:49,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 23:11:49,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 23:11:49,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 23:11:49,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 23:11:49,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:11:49" (1/1) ... [2020-10-25 23:11:49,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a9b6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49, skipping insertion in model container [2020-10-25 23:11:49,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:11:49" (1/1) ... [2020-10-25 23:11:49,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 23:11:49,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 23:11:49,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:11:49,392 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 23:11:49,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:11:49,431 INFO L208 MainTranslator]: Completed translation [2020-10-25 23:11:49,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49 WrapperNode [2020-10-25 23:11:49,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 23:11:49,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 23:11:49,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 23:11:49,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 23:11:49,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49" (1/1) ... [2020-10-25 23:11:49,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49" (1/1) ... [2020-10-25 23:11:49,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 23:11:49,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 23:11:49,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 23:11:49,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 23:11:49,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49" (1/1) ... [2020-10-25 23:11:49,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49" (1/1) ... [2020-10-25 23:11:49,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49" (1/1) ... [2020-10-25 23:11:49,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49" (1/1) ... [2020-10-25 23:11:49,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49" (1/1) ... [2020-10-25 23:11:49,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49" (1/1) ... [2020-10-25 23:11:49,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49" (1/1) ... [2020-10-25 23:11:49,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 23:11:49,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 23:11:49,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 23:11:49,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 23:11:49,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49" (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 23:11:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 23:11:49,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 23:11:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 23:11:49,622 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-25 23:11:49,622 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-25 23:11:49,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 23:11:49,879 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 23:11:49,880 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-25 23:11:49,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:11:49 BoogieIcfgContainer [2020-10-25 23:11:49,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 23:11:49,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 23:11:49,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 23:11:49,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 23:11:49,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 11:11:49" (1/3) ... [2020-10-25 23:11:49,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313b0251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:11:49, skipping insertion in model container [2020-10-25 23:11:49,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:11:49" (2/3) ... [2020-10-25 23:11:49,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313b0251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:11:49, skipping insertion in model container [2020-10-25 23:11:49,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:11:49" (3/3) ... [2020-10-25 23:11:49,897 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b2_o3.c [2020-10-25 23:11:49,928 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 23:11:49,937 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 23:11:49,970 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 23:11:50,031 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 23:11:50,035 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 23:11:50,035 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 23:11:50,036 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 23:11:50,036 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 23:11:50,036 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 23:11:50,036 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 23:11:50,036 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 23:11:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-25 23:11:50,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 23:11:50,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:11:50,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:11:50,077 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:11:50,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:11:50,085 INFO L82 PathProgramCache]: Analyzing trace with hash -948071546, now seen corresponding path program 1 times [2020-10-25 23:11:50,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:11:50,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032410055] [2020-10-25 23:11:50,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:11:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:50,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:50,426 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 23:11:50,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032410055] [2020-10-25 23:11:50,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:11:50,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:11:50,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980809130] [2020-10-25 23:11:50,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:11:50,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:11:50,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:11:50,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:11:50,452 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-10-25 23:11:50,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:11:50,523 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-10-25 23:11:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 23:11:50,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-25 23:11:50,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:11:50,543 INFO L225 Difference]: With dead ends: 30 [2020-10-25 23:11:50,544 INFO L226 Difference]: Without dead ends: 16 [2020-10-25 23:11:50,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:11:50,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-25 23:11:50,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-25 23:11:50,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-25 23:11:50,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-10-25 23:11:50,608 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2020-10-25 23:11:50,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:11:50,609 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-10-25 23:11:50,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:11:50,609 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-10-25 23:11:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 23:11:50,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:11:50,613 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:11:50,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 23:11:50,614 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:11:50,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:11:50,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1034741369, now seen corresponding path program 1 times [2020-10-25 23:11:50,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:11:50,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38541203] [2020-10-25 23:11:50,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:11:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:50,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-25 23:11:50,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38541203] [2020-10-25 23:11:50,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:11:50,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:11:50,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510930337] [2020-10-25 23:11:50,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:11:50,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:11:50,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:11:50,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:11:50,917 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2020-10-25 23:11:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:11:50,945 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2020-10-25 23:11:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 23:11:50,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-25 23:11:50,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:11:50,948 INFO L225 Difference]: With dead ends: 28 [2020-10-25 23:11:50,948 INFO L226 Difference]: Without dead ends: 20 [2020-10-25 23:11:50,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:11:50,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-25 23:11:50,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-10-25 23:11:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-25 23:11:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-25 23:11:50,957 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 17 [2020-10-25 23:11:50,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:11:50,958 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-25 23:11:50,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:11:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-25 23:11:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 23:11:50,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:11:50,960 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:11:50,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 23:11:50,960 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:11:50,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:11:50,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1063370520, now seen corresponding path program 1 times [2020-10-25 23:11:50,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:11:50,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918270140] [2020-10-25 23:11:50,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:11:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:51,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:51,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-25 23:11:51,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918270140] [2020-10-25 23:11:51,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879759951] [2020-10-25 23:11:51,267 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 23:11:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:51,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-25 23:11:51,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:11:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-25 23:11:51,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 23:11:51,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-25 23:11:51,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137899278] [2020-10-25 23:11:51,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 23:11:51,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:11:51,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 23:11:51,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-25 23:11:51,464 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 9 states. [2020-10-25 23:11:51,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:11:51,600 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-10-25 23:11:51,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 23:11:51,602 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-25 23:11:51,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:11:51,603 INFO L225 Difference]: With dead ends: 24 [2020-10-25 23:11:51,604 INFO L226 Difference]: Without dead ends: 20 [2020-10-25 23:11:51,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-25 23:11:51,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-25 23:11:51,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-25 23:11:51,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-25 23:11:51,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-25 23:11:51,618 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2020-10-25 23:11:51,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:11:51,619 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-25 23:11:51,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 23:11:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-25 23:11:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 23:11:51,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:11:51,623 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:11:51,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-25 23:11:51,838 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:11:51,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:11:51,840 INFO L82 PathProgramCache]: Analyzing trace with hash 758694231, now seen corresponding path program 1 times [2020-10-25 23:11:51,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:11:51,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017849279] [2020-10-25 23:11:51,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:11:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:51,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:52,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:52,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-25 23:11:52,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017849279] [2020-10-25 23:11:52,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484649201] [2020-10-25 23:11:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 23:11:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:52,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-25 23:11:52,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:11:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-25 23:11:52,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 23:11:52,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2020-10-25 23:11:52,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27900093] [2020-10-25 23:11:52,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:11:52,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:11:52,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:11:52,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-25 23:11:52,292 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-10-25 23:11:52,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:11:52,313 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-10-25 23:11:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 23:11:52,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-25 23:11:52,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:11:52,315 INFO L225 Difference]: With dead ends: 26 [2020-10-25 23:11:52,315 INFO L226 Difference]: Without dead ends: 22 [2020-10-25 23:11:52,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-25 23:11:52,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-25 23:11:52,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-10-25 23:11:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-25 23:11:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-25 23:11:52,322 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 24 [2020-10-25 23:11:52,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:11:52,323 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-25 23:11:52,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:11:52,323 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-25 23:11:52,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 23:11:52,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:11:52,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:11:52,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 23:11:52,537 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:11:52,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:11:52,540 INFO L82 PathProgramCache]: Analyzing trace with hash 787323382, now seen corresponding path program 2 times [2020-10-25 23:11:52,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:11:52,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805363270] [2020-10-25 23:11:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:11:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:52,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:52,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:52,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-25 23:11:52,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805363270] [2020-10-25 23:11:52,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629765081] [2020-10-25 23:11:52,891 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 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 23:11:52,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 23:11:52,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 23:11:52,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-25 23:11:52,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:11:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-25 23:11:53,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 23:11:53,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-25 23:11:53,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926999894] [2020-10-25 23:11:53,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-25 23:11:53,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:11:53,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-25 23:11:53,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-25 23:11:53,056 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 12 states. [2020-10-25 23:11:53,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:11:53,204 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-10-25 23:11:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-25 23:11:53,205 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-10-25 23:11:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:11:53,206 INFO L225 Difference]: With dead ends: 38 [2020-10-25 23:11:53,206 INFO L226 Difference]: Without dead ends: 26 [2020-10-25 23:11:53,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-25 23:11:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-25 23:11:53,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-25 23:11:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-25 23:11:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-25 23:11:53,214 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 24 [2020-10-25 23:11:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:11:53,219 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-25 23:11:53,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-25 23:11:53,219 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-25 23:11:53,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 23:11:53,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:11:53,221 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:11:53,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 23:11:53,435 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:11:53,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:11:53,436 INFO L82 PathProgramCache]: Analyzing trace with hash 621895688, now seen corresponding path program 3 times [2020-10-25 23:11:53,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:11:53,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313615173] [2020-10-25 23:11:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:11:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:53,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:53,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:53,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:53,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:11:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:11:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-25 23:11:53,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313615173] [2020-10-25 23:11:53,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027023830] [2020-10-25 23:11:53,773 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 23:11:53,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-25 23:11:53,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 23:11:53,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-25 23:11:53,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:11:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-25 23:11:53,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 23:11:53,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2020-10-25 23:11:53,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225842422] [2020-10-25 23:11:53,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:11:53,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:11:53,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:11:53,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-25 23:11:53,940 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2020-10-25 23:11:53,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:11:53,959 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-10-25 23:11:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 23:11:53,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-25 23:11:53,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:11:53,961 INFO L225 Difference]: With dead ends: 24 [2020-10-25 23:11:53,961 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 23:11:53,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-25 23:11:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 23:11:53,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 23:11:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 23:11:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 23:11:53,963 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-10-25 23:11:53,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:11:53,963 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 23:11:53,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:11:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 23:11:53,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 23:11:54,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 23:11:54,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 23:11:54,189 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 23:11:54,189 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 23:11:54,189 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 23:11:54,189 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 23:11:54,189 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-25 23:11:54,190 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-10-25 23:11:54,190 INFO L274 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-10-25 23:11:54,190 INFO L277 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-10-25 23:11:54,190 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-25 23:11:54,190 INFO L274 CegarLoopResult]: For program point L13(lines 13 19) no Hoare annotation was computed. [2020-10-25 23:11:54,190 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-25 23:11:54,190 INFO L274 CegarLoopResult]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2020-10-25 23:11:54,191 INFO L274 CegarLoopResult]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-25 23:11:54,191 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-10-25 23:11:54,191 INFO L277 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-10-25 23:11:54,191 INFO L277 CegarLoopResult]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2020-10-25 23:11:54,191 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-25 23:11:54,191 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-25 23:11:54,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 11:11:54 BoogieIcfgContainer [2020-10-25 23:11:54,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 23:11:54,199 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 23:11:54,200 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 23:11:54,200 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 23:11:54,201 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:11:49" (3/4) ... [2020-10-25 23:11:54,205 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 23:11:54,215 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2020-10-25 23:11:54,222 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-25 23:11:54,223 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 23:11:54,223 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 23:11:54,224 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 23:11:54,285 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 23:11:54,286 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 23:11:54,289 INFO L168 Benchmark]: Toolchain (without parser) took 5195.83 ms. Allocated memory was 39.8 MB in the beginning and 71.3 MB in the end (delta: 31.5 MB). Free memory was 16.7 MB in the beginning and 31.9 MB in the end (delta: -15.2 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-10-25 23:11:54,290 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 39.8 MB. Free memory is still 25.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:11:54,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.04 ms. Allocated memory is still 48.2 MB. Free memory was 33.5 MB in the beginning and 24.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-25 23:11:54,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.52 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 23.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:11:54,297 INFO L168 Benchmark]: Boogie Preprocessor took 32.89 ms. Allocated memory is still 48.2 MB. Free memory was 22.9 MB in the beginning and 22.1 MB in the end (delta: 832.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:11:54,298 INFO L168 Benchmark]: RCFGBuilder took 366.96 ms. Allocated memory is still 48.2 MB. Free memory was 22.1 MB in the beginning and 23.2 MB in the end (delta: -1.2 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-10-25 23:11:54,299 INFO L168 Benchmark]: TraceAbstraction took 4314.43 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 22.7 MB in the beginning and 34.5 MB in the end (delta: -11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-25 23:11:54,303 INFO L168 Benchmark]: Witness Printer took 87.67 ms. Allocated memory is still 71.3 MB. Free memory was 34.5 MB in the beginning and 31.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:11:54,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 39.8 MB. Free memory is still 25.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.04 ms. Allocated memory is still 48.2 MB. Free memory was 33.5 MB in the beginning and 24.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.52 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 23.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.89 ms. Allocated memory is still 48.2 MB. Free memory was 22.9 MB in the beginning and 22.1 MB in the end (delta: 832.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 366.96 ms. Allocated memory is still 48.2 MB. Free memory was 22.1 MB in the beginning and 23.2 MB in the end (delta: -1.2 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4314.43 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 22.7 MB in the beginning and 34.5 MB in the end (delta: -11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 87.67 ms. Allocated memory is still 71.3 MB. Free memory was 34.5 MB in the beginning and 31.9 MB in the end (delta: 2.7 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: 4]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 11 SDslu, 372 SDs, 0 SdLazy, 123 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=5, 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, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 219 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 14441 SizeOfPredicates, 8 NumberOfNonLiveVariables, 294 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 102/138 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...