./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/nla-digbench-scaling/freire1_unwindbound2.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 de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 04:48:08,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 04:48:08,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 04:48:08,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 04:48:08,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 04:48:08,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 04:48:08,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 04:48:08,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 04:48:08,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 04:48:08,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 04:48:08,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 04:48:08,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 04:48:08,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 04:48:08,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 04:48:08,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 04:48:08,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 04:48:08,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 04:48:08,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 04:48:08,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 04:48:08,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 04:48:08,705 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 04:48:08,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 04:48:08,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 04:48:08,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 04:48:08,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 04:48:08,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 04:48:08,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 04:48:08,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 04:48:08,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 04:48:08,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 04:48:08,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 04:48:08,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 04:48:08,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 04:48:08,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 04:48:08,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 04:48:08,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 04:48:08,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 04:48:08,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 04:48:08,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 04:48:08,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 04:48:08,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 04:48:08,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 04:48:08,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 04:48:08,755 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 04:48:08,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 04:48:08,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 04:48:08,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 04:48:08,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 04:48:08,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 04:48:08,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 04:48:08,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 04:48:08,757 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 04:48:08,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 04:48:08,757 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 04:48:08,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 04:48:08,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 04:48:08,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 04:48:08,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 04:48:08,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 04:48:08,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 04:48:08,758 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 04:48:08,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 04:48:08,759 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 04:48:08,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 04:48:08,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 04:48:08,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 04:48:08,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 04:48:08,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:48:08,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 04:48:08,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 04:48:08,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 04:48:08,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 04:48:08,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 04:48:08,761 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 04:48:08,761 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 04:48:08,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 04:48:08,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 [2022-07-12 04:48:08,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 04:48:08,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 04:48:08,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 04:48:08,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 04:48:08,999 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 04:48:09,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2022-07-12 04:48:09,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f717cebb/14ec324fd40c448097130ff5739dd8e6/FLAGce7916fa0 [2022-07-12 04:48:09,406 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 04:48:09,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2022-07-12 04:48:09,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f717cebb/14ec324fd40c448097130ff5739dd8e6/FLAGce7916fa0 [2022-07-12 04:48:09,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f717cebb/14ec324fd40c448097130ff5739dd8e6 [2022-07-12 04:48:09,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 04:48:09,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 04:48:09,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 04:48:09,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 04:48:09,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 04:48:09,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:48:09" (1/1) ... [2022-07-12 04:48:09,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d558a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:09, skipping insertion in model container [2022-07-12 04:48:09,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:48:09" (1/1) ... [2022-07-12 04:48:09,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 04:48:09,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 04:48:10,006 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/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2022-07-12 04:48:10,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:48:10,029 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 04:48:10,039 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/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2022-07-12 04:48:10,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:48:10,053 INFO L208 MainTranslator]: Completed translation [2022-07-12 04:48:10,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:10 WrapperNode [2022-07-12 04:48:10,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 04:48:10,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 04:48:10,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 04:48:10,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 04:48:10,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:10" (1/1) ... [2022-07-12 04:48:10,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:10" (1/1) ... [2022-07-12 04:48:10,083 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2022-07-12 04:48:10,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 04:48:10,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 04:48:10,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 04:48:10,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 04:48:10,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:10" (1/1) ... [2022-07-12 04:48:10,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:10" (1/1) ... [2022-07-12 04:48:10,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:10" (1/1) ... [2022-07-12 04:48:10,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:10" (1/1) ... [2022-07-12 04:48:10,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:10" (1/1) ... [2022-07-12 04:48:10,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:10" (1/1) ... [2022-07-12 04:48:10,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:10" (1/1) ... [2022-07-12 04:48:10,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 04:48:10,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 04:48:10,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 04:48:10,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 04:48:10,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:10" (1/1) ... [2022-07-12 04:48:10,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:48:10,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:48:10,137 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) [2022-07-12 04:48:10,145 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 [2022-07-12 04:48:10,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 04:48:10,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 04:48:10,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 04:48:10,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 04:48:10,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 04:48:10,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 04:48:10,209 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 04:48:10,210 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 04:48:10,286 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 04:48:10,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 04:48:10,296 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 04:48:10,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:48:10 BoogieIcfgContainer [2022-07-12 04:48:10,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 04:48:10,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 04:48:10,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 04:48:10,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 04:48:10,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 04:48:09" (1/3) ... [2022-07-12 04:48:10,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc0d930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:48:10, skipping insertion in model container [2022-07-12 04:48:10,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:10" (2/3) ... [2022-07-12 04:48:10,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc0d930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:48:10, skipping insertion in model container [2022-07-12 04:48:10,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:48:10" (3/3) ... [2022-07-12 04:48:10,309 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound2.c [2022-07-12 04:48:10,319 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 04:48:10,319 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 04:48:10,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 04:48:10,367 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@4f8bb989, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3e19e46 [2022-07-12 04:48:10,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 04:48:10,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 04:48:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 04:48:10,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:48:10,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:48:10,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:48:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:48:10,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2022-07-12 04:48:10,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:48:10,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443642908] [2022-07-12 04:48:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:48:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:48:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:48:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 04:48:10,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:48:10,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443642908] [2022-07-12 04:48:10,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443642908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:48:10,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:48:10,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 04:48:10,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195455008] [2022-07-12 04:48:10,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:48:10,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 04:48:10,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:48:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 04:48:10,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 04:48:10,494 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:48:10,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:48:10,508 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-07-12 04:48:10,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 04:48:10,510 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 04:48:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:48:10,514 INFO L225 Difference]: With dead ends: 32 [2022-07-12 04:48:10,515 INFO L226 Difference]: Without dead ends: 13 [2022-07-12 04:48:10,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 04:48:10,519 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:48:10,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:48:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-12 04:48:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-12 04:48:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 04:48:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-12 04:48:10,545 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-07-12 04:48:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:48:10,545 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-12 04:48:10,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:48:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-12 04:48:10,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 04:48:10,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:48:10,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:48:10,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 04:48:10,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:48:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:48:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2022-07-12 04:48:10,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:48:10,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815015097] [2022-07-12 04:48:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:48:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:48:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:48:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 04:48:10,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:48:10,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815015097] [2022-07-12 04:48:10,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815015097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:48:10,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:48:10,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 04:48:10,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54090536] [2022-07-12 04:48:10,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:48:10,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 04:48:10,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:48:10,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 04:48:10,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 04:48:10,627 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:48:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:48:10,638 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-07-12 04:48:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 04:48:10,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-12 04:48:10,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:48:10,639 INFO L225 Difference]: With dead ends: 22 [2022-07-12 04:48:10,639 INFO L226 Difference]: Without dead ends: 15 [2022-07-12 04:48:10,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 04:48:10,640 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:48:10,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:48:10,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-12 04:48:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-12 04:48:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 04:48:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-07-12 04:48:10,644 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2022-07-12 04:48:10,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:48:10,644 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-07-12 04:48:10,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:48:10,644 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-07-12 04:48:10,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 04:48:10,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:48:10,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:48:10,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 04:48:10,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:48:10,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:48:10,660 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2022-07-12 04:48:10,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:48:10,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338641835] [2022-07-12 04:48:10,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:48:10,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:48:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 04:48:10,670 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 04:48:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 04:48:10,702 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 04:48:10,702 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 04:48:10,703 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 04:48:10,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 04:48:10,713 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-12 04:48:10,716 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 04:48:10,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 04:48:10 BoogieIcfgContainer [2022-07-12 04:48:10,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 04:48:10,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 04:48:10,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 04:48:10,739 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 04:48:10,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:48:10" (3/4) ... [2022-07-12 04:48:10,741 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 04:48:10,741 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 04:48:10,742 INFO L158 Benchmark]: Toolchain (without parser) took 893.47ms. Allocated memory is still 113.2MB. Free memory was 75.0MB in the beginning and 46.2MB in the end (delta: 28.8MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2022-07-12 04:48:10,742 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 113.2MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:48:10,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.27ms. Allocated memory is still 113.2MB. Free memory was 74.8MB in the beginning and 87.1MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 04:48:10,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.54ms. Allocated memory is still 113.2MB. Free memory was 87.1MB in the beginning and 85.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:48:10,752 INFO L158 Benchmark]: Boogie Preprocessor took 14.58ms. Allocated memory is still 113.2MB. Free memory was 85.5MB in the beginning and 84.4MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 04:48:10,753 INFO L158 Benchmark]: RCFGBuilder took 201.20ms. Allocated memory is still 113.2MB. Free memory was 84.4MB in the beginning and 75.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 04:48:10,753 INFO L158 Benchmark]: TraceAbstraction took 436.60ms. Allocated memory is still 113.2MB. Free memory was 75.0MB in the beginning and 46.6MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-07-12 04:48:10,754 INFO L158 Benchmark]: Witness Printer took 2.43ms. Allocated memory is still 113.2MB. Free memory was 46.6MB in the beginning and 46.2MB in the end (delta: 492.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:48:10,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 113.2MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.27ms. Allocated memory is still 113.2MB. Free memory was 74.8MB in the beginning and 87.1MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.54ms. Allocated memory is still 113.2MB. Free memory was 87.1MB in the beginning and 85.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.58ms. Allocated memory is still 113.2MB. Free memory was 85.5MB in the beginning and 84.4MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 201.20ms. Allocated memory is still 113.2MB. Free memory was 84.4MB in the beginning and 75.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 436.60ms. Allocated memory is still 113.2MB. Free memory was 75.0MB in the beginning and 46.6MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 2.43ms. Allocated memory is still 113.2MB. Free memory was 46.6MB in the beginning and 46.2MB in the end (delta: 492.0kB). There was no memory consumed. 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 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0, r=0] [L32] EXPR counter++ VAL [counter=1, counter++=0, r=0] [L32] COND TRUE counter++<2 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2022-07-12 04:48:10,780 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/nla-digbench-scaling/freire1_unwindbound2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 04:48:12,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 04:48:12,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 04:48:12,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 04:48:12,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 04:48:12,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 04:48:12,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 04:48:12,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 04:48:12,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 04:48:12,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 04:48:12,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 04:48:12,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 04:48:12,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 04:48:12,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 04:48:12,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 04:48:12,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 04:48:12,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 04:48:12,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 04:48:12,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 04:48:12,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 04:48:12,598 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 04:48:12,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 04:48:12,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 04:48:12,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 04:48:12,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 04:48:12,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 04:48:12,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 04:48:12,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 04:48:12,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 04:48:12,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 04:48:12,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 04:48:12,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 04:48:12,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 04:48:12,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 04:48:12,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 04:48:12,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 04:48:12,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 04:48:12,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 04:48:12,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 04:48:12,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 04:48:12,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 04:48:12,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 04:48:12,610 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 04:48:12,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 04:48:12,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 04:48:12,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 04:48:12,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 04:48:12,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 04:48:12,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 04:48:12,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 04:48:12,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 04:48:12,631 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 04:48:12,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 04:48:12,631 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 04:48:12,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 04:48:12,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 04:48:12,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 04:48:12,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 04:48:12,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 04:48:12,632 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 04:48:12,633 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 04:48:12,633 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 04:48:12,633 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 04:48:12,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 04:48:12,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 04:48:12,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 04:48:12,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 04:48:12,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 04:48:12,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 04:48:12,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:48:12,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 04:48:12,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 04:48:12,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 04:48:12,636 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 04:48:12,636 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 04:48:12,637 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 04:48:12,637 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 04:48:12,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 04:48:12,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 04:48:12,638 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 [2022-07-12 04:48:12,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 04:48:12,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 04:48:12,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 04:48:12,943 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 04:48:12,944 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 04:48:12,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2022-07-12 04:48:12,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f72bc6bd/3f62e211c3e84ed1828e7ca4e656f826/FLAG4eb411179 [2022-07-12 04:48:13,322 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 04:48:13,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2022-07-12 04:48:13,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f72bc6bd/3f62e211c3e84ed1828e7ca4e656f826/FLAG4eb411179 [2022-07-12 04:48:13,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f72bc6bd/3f62e211c3e84ed1828e7ca4e656f826 [2022-07-12 04:48:13,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 04:48:13,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 04:48:13,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 04:48:13,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 04:48:13,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 04:48:13,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:48:13" (1/1) ... [2022-07-12 04:48:13,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5907fe2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13, skipping insertion in model container [2022-07-12 04:48:13,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:48:13" (1/1) ... [2022-07-12 04:48:13,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 04:48:13,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 04:48:13,486 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/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2022-07-12 04:48:13,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:48:13,520 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 04:48:13,558 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/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2022-07-12 04:48:13,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:48:13,576 INFO L208 MainTranslator]: Completed translation [2022-07-12 04:48:13,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13 WrapperNode [2022-07-12 04:48:13,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 04:48:13,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 04:48:13,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 04:48:13,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 04:48:13,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13" (1/1) ... [2022-07-12 04:48:13,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13" (1/1) ... [2022-07-12 04:48:13,608 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2022-07-12 04:48:13,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 04:48:13,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 04:48:13,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 04:48:13,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 04:48:13,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13" (1/1) ... [2022-07-12 04:48:13,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13" (1/1) ... [2022-07-12 04:48:13,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13" (1/1) ... [2022-07-12 04:48:13,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13" (1/1) ... [2022-07-12 04:48:13,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13" (1/1) ... [2022-07-12 04:48:13,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13" (1/1) ... [2022-07-12 04:48:13,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13" (1/1) ... [2022-07-12 04:48:13,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 04:48:13,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 04:48:13,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 04:48:13,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 04:48:13,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13" (1/1) ... [2022-07-12 04:48:13,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:48:13,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:48:13,671 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) [2022-07-12 04:48:13,689 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 [2022-07-12 04:48:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 04:48:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 04:48:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 04:48:13,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 04:48:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 04:48:13,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 04:48:13,761 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 04:48:13,762 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 04:48:14,278 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 04:48:14,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 04:48:14,282 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 04:48:14,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:48:14 BoogieIcfgContainer [2022-07-12 04:48:14,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 04:48:14,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 04:48:14,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 04:48:14,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 04:48:14,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 04:48:13" (1/3) ... [2022-07-12 04:48:14,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3503173b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:48:14, skipping insertion in model container [2022-07-12 04:48:14,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:48:13" (2/3) ... [2022-07-12 04:48:14,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3503173b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:48:14, skipping insertion in model container [2022-07-12 04:48:14,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:48:14" (3/3) ... [2022-07-12 04:48:14,291 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound2.c [2022-07-12 04:48:14,303 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 04:48:14,303 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 04:48:14,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 04:48:14,366 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@4aa130d3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@eb4e4d [2022-07-12 04:48:14,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 04:48:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 04:48:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 04:48:14,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:48:14,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:48:14,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:48:14,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:48:14,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2022-07-12 04:48:14,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 04:48:14,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339431245] [2022-07-12 04:48:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:48:14,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 04:48:14,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 04:48:14,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 04:48:14,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 04:48:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:48:14,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 04:48:14,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:48:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 04:48:14,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:48:14,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 04:48:14,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339431245] [2022-07-12 04:48:14,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339431245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:48:14,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:48:14,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 04:48:14,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624624032] [2022-07-12 04:48:14,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:48:14,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 04:48:14,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 04:48:14,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 04:48:14,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 04:48:14,818 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:48:14,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:48:14,833 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-07-12 04:48:14,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 04:48:14,836 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 04:48:14,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:48:14,841 INFO L225 Difference]: With dead ends: 32 [2022-07-12 04:48:14,841 INFO L226 Difference]: Without dead ends: 13 [2022-07-12 04:48:14,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 04:48:14,846 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:48:14,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:48:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-12 04:48:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-12 04:48:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 04:48:14,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-12 04:48:14,873 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-07-12 04:48:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:48:14,873 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-12 04:48:14,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:48:14,873 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-12 04:48:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 04:48:14,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:48:14,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:48:14,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 04:48:15,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 04:48:15,090 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:48:15,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:48:15,091 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2022-07-12 04:48:15,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 04:48:15,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302787377] [2022-07-12 04:48:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:48:15,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 04:48:15,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 04:48:15,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 04:48:15,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 04:48:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:48:15,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 04:48:15,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:48:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 04:48:15,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:48:15,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 04:48:15,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302787377] [2022-07-12 04:48:15,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302787377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:48:15,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:48:15,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 04:48:15,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043173219] [2022-07-12 04:48:15,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:48:15,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 04:48:15,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 04:48:15,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 04:48:15,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 04:48:15,446 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:48:16,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:48:16,409 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-07-12 04:48:16,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 04:48:16,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-12 04:48:16,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:48:16,410 INFO L225 Difference]: With dead ends: 22 [2022-07-12 04:48:16,410 INFO L226 Difference]: Without dead ends: 15 [2022-07-12 04:48:16,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 04:48:16,411 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:48:16,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 04:48:16,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-12 04:48:16,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-12 04:48:16,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 04:48:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-07-12 04:48:16,415 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2022-07-12 04:48:16,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:48:16,415 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-07-12 04:48:16,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:48:16,415 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-07-12 04:48:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 04:48:16,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:48:16,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:48:16,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 04:48:16,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 04:48:16,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:48:16,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:48:16,636 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2022-07-12 04:48:16,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 04:48:16,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136889317] [2022-07-12 04:48:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:48:16,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 04:48:16,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 04:48:16,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 04:48:16,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 04:48:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:48:19,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 04:48:19,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:48:43,084 WARN L833 $PredicateComparison]: unable to prove that (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from false [2022-07-12 04:48:52,839 WARN L833 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) c___VERIFIER_assert_~cond) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= (_ bv1 32) c___VERIFIER_assert_~cond))) is different from false [2022-07-12 04:48:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 04:48:52,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:48:52,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 04:48:52,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136889317] [2022-07-12 04:48:52,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136889317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:48:52,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:48:52,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:48:52,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726459170] [2022-07-12 04:48:52,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:48:52,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 04:48:52,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 04:48:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 04:48:52,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=8, Unknown=2, NotChecked=10, Total=30 [2022-07-12 04:48:52,854 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:48:54,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 04:48:57,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 04:48:59,258 WARN L833 $PredicateComparison]: unable to prove that (and (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-12 04:49:00,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 04:49:02,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 04:49:04,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 04:49:06,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 04:49:08,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 04:49:11,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 04:49:11,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:49:11,108 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-07-12 04:49:11,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 04:49:11,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-12 04:49:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:49:11,118 INFO L225 Difference]: With dead ends: 25 [2022-07-12 04:49:11,118 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 04:49:11,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=12, Invalid=9, Unknown=3, NotChecked=18, Total=42 [2022-07-12 04:49:11,120 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:49:11,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 50 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 5 Unknown, 24 Unchecked, 16.0s Time] [2022-07-12 04:49:11,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 04:49:11,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 04:49:11,121 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) [2022-07-12 04:49:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 04:49:11,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-07-12 04:49:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:49:11,121 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 04:49:11,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:49:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 04:49:11,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 04:49:11,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 04:49:11,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 04:49:11,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 04:49:11,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 04:49:11,854 INFO L902 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: true [2022-07-12 04:49:11,854 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 04:49:11,854 INFO L899 garLoopResultBuilder]: For program point L33-1(lines 32 39) no Hoare annotation was computed. [2022-07-12 04:49:11,854 INFO L902 garLoopResultBuilder]: At program point L42(lines 25 43) the Hoare annotation is: true [2022-07-12 04:49:11,855 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 04:49:11,855 INFO L899 garLoopResultBuilder]: For program point L32-1(lines 32 39) no Hoare annotation was computed. [2022-07-12 04:49:11,855 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 04:49:11,855 INFO L902 garLoopResultBuilder]: At program point L32-3(lines 32 39) the Hoare annotation is: true [2022-07-12 04:49:11,855 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 04:49:11,855 INFO L902 garLoopResultBuilder]: At program point L32-4(lines 32 39) the Hoare annotation is: true [2022-07-12 04:49:11,855 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-07-12 04:49:11,855 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 20) no Hoare annotation was computed. [2022-07-12 04:49:11,855 INFO L899 garLoopResultBuilder]: For program point L17-2(lines 16 22) no Hoare annotation was computed. [2022-07-12 04:49:11,855 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 16 22) the Hoare annotation is: true [2022-07-12 04:49:11,855 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 16 22) no Hoare annotation was computed. [2022-07-12 04:49:11,855 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-07-12 04:49:11,855 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2022-07-12 04:49:11,857 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-12 04:49:11,859 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 04:49:11,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 04:49:11 BoogieIcfgContainer [2022-07-12 04:49:11,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 04:49:11,866 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 04:49:11,866 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 04:49:11,867 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 04:49:11,867 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:48:14" (3/4) ... [2022-07-12 04:49:11,869 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 04:49:11,874 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-12 04:49:11,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-12 04:49:11,879 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-12 04:49:11,879 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 04:49:11,879 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 04:49:11,908 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 04:49:11,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 04:49:11,908 INFO L158 Benchmark]: Toolchain (without parser) took 58563.36ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 40.0MB in the beginning and 35.1MB in the end (delta: 4.9MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2022-07-12 04:49:11,909 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:49:11,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.05ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 44.3MB in the end (delta: -4.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 04:49:11,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.11ms. Allocated memory is still 60.8MB. Free memory was 44.1MB in the beginning and 42.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 04:49:11,909 INFO L158 Benchmark]: Boogie Preprocessor took 35.36ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 41.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:49:11,910 INFO L158 Benchmark]: RCFGBuilder took 638.96ms. Allocated memory is still 60.8MB. Free memory was 41.4MB in the beginning and 32.6MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 04:49:11,910 INFO L158 Benchmark]: TraceAbstraction took 57580.20ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 32.0MB in the beginning and 37.6MB in the end (delta: -5.5MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-07-12 04:49:11,910 INFO L158 Benchmark]: Witness Printer took 41.63ms. Allocated memory is still 73.4MB. Free memory was 37.2MB in the beginning and 35.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 04:49:11,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.05ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 44.3MB in the end (delta: -4.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.11ms. Allocated memory is still 60.8MB. Free memory was 44.1MB in the beginning and 42.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.36ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 41.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 638.96ms. Allocated memory is still 60.8MB. Free memory was 41.4MB in the beginning and 32.6MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 57580.20ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 32.0MB in the beginning and 37.6MB in the end (delta: -5.5MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Witness Printer took 41.63ms. Allocated memory is still 73.4MB. Free memory was 37.2MB in the beginning and 35.1MB in the end (delta: 2.1MB). 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: 19]: 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 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 17.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 16.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 24 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 45 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 5 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 146 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 33.8s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 2 QuantifiedInterpolants, 173 SizeOfPredicates, 3 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-12 04:49:12,005 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