./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/elimination_max_rec.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/verifythis/elimination_max_rec.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 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:10:54,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:10:54,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:10:54,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:10:54,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:10:54,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:10:55,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:10:55,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:10:55,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:10:55,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:10:55,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:10:55,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:10:55,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:10:55,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:10:55,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:10:55,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:10:55,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:10:55,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:10:55,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:10:55,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:10:55,027 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:10:55,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:10:55,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:10:55,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:10:55,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:10:55,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:10:55,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:10:55,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:10:55,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:10:55,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:10:55,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:10:55,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:10:55,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:10:55,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:10:55,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:10:55,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:10:55,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:10:55,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:10:55,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:10:55,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:10:55,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:10:55,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:10:55,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:10:55,074 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:10:55,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:10:55,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:10:55,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:10:55,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:10:55,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:10:55,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:10:55,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:10:55,077 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:10:55,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:10:55,078 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:10:55,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:10:55,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:10:55,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:10:55,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:10:55,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:10:55,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:10:55,079 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:10:55,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:10:55,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:10:55,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:10:55,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:10:55,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:10:55,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:10:55,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:10:55,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:10:55,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:10:55,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:10:55,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:10:55,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:10:55,081 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:10:55,082 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:10:55,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:10:55,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a [2022-07-21 05:10:55,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:10:55,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:10:55,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:10:55,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:10:55,358 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:10:55,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/elimination_max_rec.c [2022-07-21 05:10:55,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6a940997/4f0f85a9c9ba4dc9be318e4f7d59f935/FLAGbe0e5bbb1 [2022-07-21 05:10:55,724 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:10:55,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec.c [2022-07-21 05:10:55,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6a940997/4f0f85a9c9ba4dc9be318e4f7d59f935/FLAGbe0e5bbb1 [2022-07-21 05:10:56,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6a940997/4f0f85a9c9ba4dc9be318e4f7d59f935 [2022-07-21 05:10:56,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:10:56,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:10:56,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:10:56,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:10:56,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:10:56,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:10:56" (1/1) ... [2022-07-21 05:10:56,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7609d2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56, skipping insertion in model container [2022-07-21 05:10:56,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:10:56" (1/1) ... [2022-07-21 05:10:56,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:10:56,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:10:56,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2022-07-21 05:10:56,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:10:56,300 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:10:56,310 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2022-07-21 05:10:56,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:10:56,354 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:10:56,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56 WrapperNode [2022-07-21 05:10:56,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:10:56,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:10:56,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:10:56,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:10:56,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56" (1/1) ... [2022-07-21 05:10:56,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56" (1/1) ... [2022-07-21 05:10:56,388 INFO L137 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2022-07-21 05:10:56,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:10:56,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:10:56,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:10:56,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:10:56,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56" (1/1) ... [2022-07-21 05:10:56,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56" (1/1) ... [2022-07-21 05:10:56,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56" (1/1) ... [2022-07-21 05:10:56,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56" (1/1) ... [2022-07-21 05:10:56,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56" (1/1) ... [2022-07-21 05:10:56,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56" (1/1) ... [2022-07-21 05:10:56,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56" (1/1) ... [2022-07-21 05:10:56,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:10:56,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:10:56,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:10:56,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:10:56,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56" (1/1) ... [2022-07-21 05:10:56,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:10:56,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:10:56,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:10:56,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:10:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:10:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 05:10:56,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 05:10:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:10:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-07-21 05:10:56,490 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-07-21 05:10:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 05:10:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:10:56,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:10:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 05:10:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 05:10:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 05:10:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 05:10:56,569 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:10:56,570 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:10:56,716 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:10:56,720 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:10:56,720 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 05:10:56,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:10:56 BoogieIcfgContainer [2022-07-21 05:10:56,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:10:56,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:10:56,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:10:56,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:10:56,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:10:56" (1/3) ... [2022-07-21 05:10:56,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355740ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:10:56, skipping insertion in model container [2022-07-21 05:10:56,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:10:56" (2/3) ... [2022-07-21 05:10:56,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355740ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:10:56, skipping insertion in model container [2022-07-21 05:10:56,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:10:56" (3/3) ... [2022-07-21 05:10:56,727 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2022-07-21 05:10:56,737 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:10:56,738 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:10:56,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:10:56,785 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@79699691, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32213b0 [2022-07-21 05:10:56,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:10:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 05:10:56,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 05:10:56,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:10:56,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:10:56,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:10:56,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:10:56,797 INFO L85 PathProgramCache]: Analyzing trace with hash 753288437, now seen corresponding path program 1 times [2022-07-21 05:10:56,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:10:56,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779953711] [2022-07-21 05:10:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:10:56,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:10:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:10:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:10:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:10:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:10:57,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:10:57,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779953711] [2022-07-21 05:10:57,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779953711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:10:57,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:10:57,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:10:57,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197977541] [2022-07-21 05:10:57,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:10:57,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:10:57,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:10:57,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:10:57,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:10:57,067 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:10:57,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:10:57,208 INFO L93 Difference]: Finished difference Result 88 states and 121 transitions. [2022-07-21 05:10:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:10:57,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-21 05:10:57,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:10:57,215 INFO L225 Difference]: With dead ends: 88 [2022-07-21 05:10:57,215 INFO L226 Difference]: Without dead ends: 54 [2022-07-21 05:10:57,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:10:57,219 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 21 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:10:57,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 172 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:10:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-07-21 05:10:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2022-07-21 05:10:57,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-21 05:10:57,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2022-07-21 05:10:57,258 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 16 [2022-07-21 05:10:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:10:57,259 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2022-07-21 05:10:57,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:10:57,259 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2022-07-21 05:10:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-21 05:10:57,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:10:57,260 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:10:57,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:10:57,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:10:57,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:10:57,262 INFO L85 PathProgramCache]: Analyzing trace with hash 270815563, now seen corresponding path program 1 times [2022-07-21 05:10:57,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:10:57,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114087323] [2022-07-21 05:10:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:10:57,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:10:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:10:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:10:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:10:57,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:10:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:10:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:10:57,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:10:57,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114087323] [2022-07-21 05:10:57,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114087323] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:10:57,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146275785] [2022-07-21 05:10:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:10:57,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:10:57,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:10:57,468 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:10:57,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 05:10:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:10:57,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:10:57,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:10:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:10:57,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:10:57,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146275785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:10:57,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:10:57,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2022-07-21 05:10:57,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509395654] [2022-07-21 05:10:57,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:10:57,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 05:10:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:10:57,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 05:10:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:10:57,668 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 05:10:57,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:10:57,827 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2022-07-21 05:10:57,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:10:57,828 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-07-21 05:10:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:10:57,837 INFO L225 Difference]: With dead ends: 60 [2022-07-21 05:10:57,837 INFO L226 Difference]: Without dead ends: 58 [2022-07-21 05:10:57,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:10:57,842 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 36 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:10:57,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 170 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:10:57,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-07-21 05:10:57,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2022-07-21 05:10:57,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-21 05:10:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-07-21 05:10:57,852 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 26 [2022-07-21 05:10:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:10:57,853 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-07-21 05:10:57,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 05:10:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-07-21 05:10:57,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 05:10:57,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:10:57,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:10:57,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 05:10:58,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:10:58,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:10:58,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:10:58,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1695917213, now seen corresponding path program 1 times [2022-07-21 05:10:58,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:10:58,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649901368] [2022-07-21 05:10:58,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:10:58,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:10:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:10:58,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:10:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:10:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:10:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:10:58,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:10:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:10:58,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:10:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:10:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:10:58,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:10:58,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649901368] [2022-07-21 05:10:58,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649901368] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:10:58,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166052240] [2022-07-21 05:10:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:10:58,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:10:58,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:10:58,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:10:58,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 05:10:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:10:58,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 05:10:58,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:10:58,314 INFO L390 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 7 treesize of output 6 [2022-07-21 05:11:00,364 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_1 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_1))) is different from true [2022-07-21 05:11:02,409 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_2 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_2))) is different from true [2022-07-21 05:11:04,436 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_3 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_3))) is different from true [2022-07-21 05:11:04,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2022-07-21 05:11:04,532 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-07-21 05:11:04,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:11:06,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166052240] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:11:06,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:11:06,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 16 [2022-07-21 05:11:06,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256832438] [2022-07-21 05:11:06,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 05:11:06,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 05:11:06,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:11:06,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 05:11:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=179, Unknown=3, NotChecked=84, Total=306 [2022-07-21 05:11:06,629 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 16 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 6 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 05:11:06,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:11:06,745 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2022-07-21 05:11:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 05:11:06,746 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 6 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 35 [2022-07-21 05:11:06,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:11:06,746 INFO L225 Difference]: With dead ends: 39 [2022-07-21 05:11:06,746 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 05:11:06,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=64, Invalid=287, Unknown=3, NotChecked=108, Total=462 [2022-07-21 05:11:06,748 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:11:06,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 151 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 0 Unknown, 156 Unchecked, 0.1s Time] [2022-07-21 05:11:06,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 05:11:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 05:11:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:11:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 05:11:06,749 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2022-07-21 05:11:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:11:06,749 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 05:11:06,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 6 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 05:11:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 05:11:06,750 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 05:11:06,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 05:11:06,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 05:11:06,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-21 05:11:06,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 05:11:07,208 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 05:11:07,208 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 05:11:07,208 INFO L899 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2022-07-21 05:11:07,208 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 05:11:07,208 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 05:11:07,208 INFO L902 garLoopResultBuilder]: At program point L49(lines 41 50) the Hoare annotation is: true [2022-07-21 05:11:07,209 INFO L895 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc14#1.base|)))) [2022-07-21 05:11:07,209 INFO L899 garLoopResultBuilder]: For program point L46-1(line 46) no Hoare annotation was computed. [2022-07-21 05:11:07,209 INFO L902 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: true [2022-07-21 05:11:07,209 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-07-21 05:11:07,209 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-07-21 05:11:07,209 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-07-21 05:11:07,209 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-07-21 05:11:07,209 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-07-21 05:11:07,209 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (let ((.cse1 (<= (+ check_~y 1) check_~n))) (or (and .cse1 (<= 1 check_~x)) (and (<= 0 check_~x) (= |check_#in~x| 0) .cse1))) (= .cse0 (select |#memory_int| check_~a.base))) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)))) [2022-07-21 05:11:07,209 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2022-07-21 05:11:07,209 INFO L902 garLoopResultBuilder]: At program point checkENTRY(lines 16 39) the Hoare annotation is: true [2022-07-21 05:11:07,209 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-07-21 05:11:07,210 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 26) no Hoare annotation was computed. [2022-07-21 05:11:07,210 INFO L895 garLoopResultBuilder]: At program point L25-2(lines 25 26) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (let ((.cse1 (<= (+ check_~y 1) check_~n))) (or (and .cse1 (<= 1 check_~x)) (and (= check_~x 0) (= |check_#in~x| 0) .cse1))) (= .cse0 (select |#memory_int| check_~a.base))) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)))) [2022-07-21 05:11:07,210 INFO L895 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (let ((.cse1 (<= (+ check_~y 1) check_~n))) (or (and (<= 1 |check_#in~x|) .cse1 (<= 1 check_~x)) (and (= check_~x 0) (= |check_#in~x| 0) .cse1))) (= .cse0 (select |#memory_int| check_~a.base))) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)))) [2022-07-21 05:11:07,210 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-07-21 05:11:07,210 INFO L899 garLoopResultBuilder]: For program point checkEXIT(lines 16 39) no Hoare annotation was computed. [2022-07-21 05:11:07,210 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-07-21 05:11:07,210 INFO L899 garLoopResultBuilder]: For program point checkFINAL(lines 16 39) no Hoare annotation was computed. [2022-07-21 05:11:07,210 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (and (= check_~ai~0 0) (let ((.cse1 (<= (+ check_~y 1) check_~n))) (or (and .cse1 (<= 1 check_~x)) (and (<= 0 check_~x) (= |check_#in~x| 0) .cse1))) (= .cse0 (select |#memory_int| check_~a.base)) (= check_~ax~0 0)) (not (<= 0 |check_#in~x|)))) [2022-07-21 05:11:07,210 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2022-07-21 05:11:07,210 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 12) the Hoare annotation is: true [2022-07-21 05:11:07,210 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-07-21 05:11:07,210 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-07-21 05:11:07,210 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2022-07-21 05:11:07,210 INFO L899 garLoopResultBuilder]: For program point L11-3(lines 10 12) no Hoare annotation was computed. [2022-07-21 05:11:07,211 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2022-07-21 05:11:07,213 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-21 05:11:07,214 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 05:11:07,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:11:07 BoogieIcfgContainer [2022-07-21 05:11:07,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 05:11:07,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 05:11:07,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 05:11:07,228 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 05:11:07,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:10:56" (3/4) ... [2022-07-21 05:11:07,230 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 05:11:07,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-21 05:11:07,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2022-07-21 05:11:07,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-21 05:11:07,239 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-07-21 05:11:07,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-07-21 05:11:07,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-07-21 05:11:07,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 05:11:07,286 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 05:11:07,286 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 05:11:07,287 INFO L158 Benchmark]: Toolchain (without parser) took 11128.88ms. Allocated memory was 52.4MB in the beginning and 79.7MB in the end (delta: 27.3MB). Free memory was 29.6MB in the beginning and 55.4MB in the end (delta: -25.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 05:11:07,290 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 34.4MB in the beginning and 34.4MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 05:11:07,291 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.66ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 29.4MB in the beginning and 48.7MB in the end (delta: -19.3MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-07-21 05:11:07,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.51ms. Allocated memory is still 65.0MB. Free memory was 48.7MB in the beginning and 47.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 05:11:07,291 INFO L158 Benchmark]: Boogie Preprocessor took 36.25ms. Allocated memory is still 65.0MB. Free memory was 47.1MB in the beginning and 46.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 05:11:07,291 INFO L158 Benchmark]: RCFGBuilder took 296.24ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 35.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 05:11:07,292 INFO L158 Benchmark]: TraceAbstraction took 10503.39ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 34.7MB in the beginning and 58.3MB in the end (delta: -23.6MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2022-07-21 05:11:07,292 INFO L158 Benchmark]: Witness Printer took 58.46ms. Allocated memory is still 79.7MB. Free memory was 58.3MB in the beginning and 55.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 05:11:07,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 34.4MB in the beginning and 34.4MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.66ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 29.4MB in the beginning and 48.7MB in the end (delta: -19.3MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.51ms. Allocated memory is still 65.0MB. Free memory was 48.7MB in the beginning and 47.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.25ms. Allocated memory is still 65.0MB. Free memory was 47.1MB in the beginning and 46.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 296.24ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 35.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10503.39ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 34.7MB in the beginning and 58.3MB in the end (delta: -23.6MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Witness Printer took 58.46ms. Allocated memory is still 79.7MB. Free memory was 58.3MB in the beginning and 55.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 493 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 156 IncrementalHoareTripleChecker+Unchecked, 391 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 275 IncrementalHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 102 mSDtfsCounter, 275 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=1, InterpolantAutomatonStates: 28, 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, 3 MinimizatonAttempts, 32 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 30 PreInvPairs, 38 NumberOfFragments, 215 HoareAnnotationTreeSize, 30 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 389 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 133 ConstructedInterpolants, 13 QuantifiedInterpolants, 570 SizeOfPredicates, 16 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 17/26 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-21 05:11:07,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE