./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/rlim_invariant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/float-benchs/rlim_invariant.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 d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:17:34,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:17:34,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:17:34,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:17:34,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:17:34,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:17:34,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:17:34,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:17:34,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:17:34,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:17:34,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:17:34,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:17:34,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:17:34,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:17:34,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:17:34,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:17:34,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:17:34,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:17:34,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:17:34,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:17:34,687 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:17:34,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:17:34,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:17:34,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:17:34,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:17:34,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:17:34,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:17:34,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:17:34,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:17:34,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:17:34,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:17:34,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:17:34,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:17:34,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:17:34,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:17:34,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:17:34,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:17:34,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:17:34,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:17:34,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:17:34,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:17:34,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:17:34,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 14:17:34,755 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:17:34,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:17:34,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:17:34,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:17:34,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:17:34,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:17:34,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:17:34,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:17:34,760 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:17:34,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:17:34,761 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:17:34,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 14:17:34,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:17:34,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:17:34,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:17:34,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:17:34,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:17:34,762 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:17:34,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:17:34,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:17:34,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:17:34,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:17:34,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:17:34,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:17:34,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:17:34,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:17:34,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:17:34,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:17:34,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 14:17:34,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 14:17:34,765 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:17:34,765 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:17:34,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:17:34,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2022-07-13 14:17:34,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:17:35,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:17:35,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:17:35,019 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:17:35,019 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:17:35,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-07-13 14:17:35,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392c327d4/cd21c611d2a94b71942ccf3583b32b42/FLAGf7d9aca7c [2022-07-13 14:17:35,472 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:17:35,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-07-13 14:17:35,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392c327d4/cd21c611d2a94b71942ccf3583b32b42/FLAGf7d9aca7c [2022-07-13 14:17:35,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392c327d4/cd21c611d2a94b71942ccf3583b32b42 [2022-07-13 14:17:35,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:17:35,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:17:35,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:17:35,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:17:35,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:17:35,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:17:35" (1/1) ... [2022-07-13 14:17:35,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d06e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:35, skipping insertion in model container [2022-07-13 14:17:35,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:17:35" (1/1) ... [2022-07-13 14:17:35,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:17:35,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:17:36,071 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/float-benchs/rlim_invariant.c[451,464] [2022-07-13 14:17:36,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:17:36,089 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:17:36,099 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/float-benchs/rlim_invariant.c[451,464] [2022-07-13 14:17:36,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:17:36,116 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:17:36,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:36 WrapperNode [2022-07-13 14:17:36,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:17:36,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:17:36,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:17:36,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:17:36,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:36" (1/1) ... [2022-07-13 14:17:36,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:36" (1/1) ... [2022-07-13 14:17:36,146 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-07-13 14:17:36,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:17:36,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:17:36,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:17:36,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:17:36,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:36" (1/1) ... [2022-07-13 14:17:36,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:36" (1/1) ... [2022-07-13 14:17:36,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:36" (1/1) ... [2022-07-13 14:17:36,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:36" (1/1) ... [2022-07-13 14:17:36,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:36" (1/1) ... [2022-07-13 14:17:36,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:36" (1/1) ... [2022-07-13 14:17:36,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:36" (1/1) ... [2022-07-13 14:17:36,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:17:36,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:17:36,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:17:36,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:17:36,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:36" (1/1) ... [2022-07-13 14:17:36,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:17:36,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:17:36,195 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) [2022-07-13 14:17:36,196 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 [2022-07-13 14:17:36,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:17:36,226 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 14:17:36,226 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 14:17:36,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 14:17:36,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:17:36,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:17:36,271 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:17:36,272 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:17:36,347 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:17:36,352 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:17:36,352 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 14:17:36,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:36 BoogieIcfgContainer [2022-07-13 14:17:36,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:17:36,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:17:36,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:17:36,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:17:36,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:17:35" (1/3) ... [2022-07-13 14:17:36,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b76a5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:17:36, skipping insertion in model container [2022-07-13 14:17:36,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:36" (2/3) ... [2022-07-13 14:17:36,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b76a5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:17:36, skipping insertion in model container [2022-07-13 14:17:36,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:36" (3/3) ... [2022-07-13 14:17:36,363 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2022-07-13 14:17:36,374 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:17:36,375 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:17:36,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:17:36,418 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@230ef741, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78a47999 [2022-07-13 14:17:36,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:17:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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) [2022-07-13 14:17:36,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 14:17:36,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:36,428 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:36,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1358229485, now seen corresponding path program 1 times [2022-07-13 14:17:36,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:17:36,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147756124] [2022-07-13 14:17:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:36,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:17:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:36,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 14:17:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:36,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 14:17:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 14:17:36,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 14:17:36,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147756124] [2022-07-13 14:17:36,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147756124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:36,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:36,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:17:36,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692537807] [2022-07-13 14:17:36,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:36,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:17:36,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 14:17:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:17:36,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:17:36,693 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 14:17:36,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:36,712 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-07-13 14:17:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:17:36,715 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-07-13 14:17:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:36,722 INFO L225 Difference]: With dead ends: 42 [2022-07-13 14:17:36,723 INFO L226 Difference]: Without dead ends: 18 [2022-07-13 14:17:36,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:17:36,730 INFO L413 NwaCegarLoop]: 25 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, 25 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 [2022-07-13 14:17:36,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:17:36,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-13 14:17:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-13 14:17:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2022-07-13 14:17:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-07-13 14:17:36,778 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 18 [2022-07-13 14:17:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:36,779 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-07-13 14:17:36,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 14:17:36,780 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-07-13 14:17:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 14:17:36,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:36,782 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:36,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 14:17:36,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:36,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:36,785 INFO L85 PathProgramCache]: Analyzing trace with hash -37923155, now seen corresponding path program 1 times [2022-07-13 14:17:36,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:17:36,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258693016] [2022-07-13 14:17:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:36,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:17:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:17:36,822 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 14:17:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:17:36,873 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 14:17:36,874 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 14:17:36,875 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:17:36,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 14:17:36,882 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 14:17:36,889 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:17:36,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:17:36 BoogieIcfgContainer [2022-07-13 14:17:36,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:17:36,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:17:36,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:17:36,925 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:17:36,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:36" (3/4) ... [2022-07-13 14:17:36,928 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 14:17:36,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:17:36,930 INFO L158 Benchmark]: Toolchain (without parser) took 1022.51ms. Allocated memory is still 111.1MB. Free memory was 74.2MB in the beginning and 49.1MB in the end (delta: 25.1MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2022-07-13 14:17:36,930 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:17:36,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.82ms. Allocated memory is still 111.1MB. Free memory was 73.9MB in the beginning and 87.2MB in the end (delta: -13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:17:36,934 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.76ms. Allocated memory is still 111.1MB. Free memory was 87.2MB in the beginning and 85.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:17:36,935 INFO L158 Benchmark]: Boogie Preprocessor took 14.85ms. Allocated memory is still 111.1MB. Free memory was 85.9MB in the beginning and 84.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:17:36,937 INFO L158 Benchmark]: RCFGBuilder took 190.36ms. Allocated memory is still 111.1MB. Free memory was 84.7MB in the beginning and 75.3MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:17:36,938 INFO L158 Benchmark]: TraceAbstraction took 568.07ms. Allocated memory is still 111.1MB. Free memory was 74.6MB in the beginning and 49.6MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-13 14:17:36,938 INFO L158 Benchmark]: Witness Printer took 3.85ms. Allocated memory is still 111.1MB. Free memory was 49.6MB in the beginning and 49.1MB in the end (delta: 472.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:17:36,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.82ms. Allocated memory is still 111.1MB. Free memory was 73.9MB in the beginning and 87.2MB in the end (delta: -13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.76ms. Allocated memory is still 111.1MB. Free memory was 87.2MB in the beginning and 85.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.85ms. Allocated memory is still 111.1MB. Free memory was 85.9MB in the beginning and 84.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 190.36ms. Allocated memory is still 111.1MB. Free memory was 84.7MB in the beginning and 75.3MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 568.07ms. Allocated memory is still 111.1MB. Free memory was 74.6MB in the beginning and 49.6MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.85ms. Allocated memory is still 111.1MB. Free memory was 49.6MB in the beginning and 49.1MB in the end (delta: 472.0kB). 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 - UnprovableResult [Line: 10]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 32, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L14] float X, Y, S, R, D; [L15] int i; [L17] Y = 0 [L19] i = 0 VAL [i=0] [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L23] CALL assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L23] RET assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [D=49, i=0, X=50] [L24] CALL assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L24] RET assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [D=49, i=0, X=50] [L26] S = Y [L27] Y = X [L28] R = X - S VAL [D=49, i=0, S=51, X=50, Y=50] [L29] COND TRUE R <= -D [L29] Y = S - D VAL [D=49, i=0, S=51, X=50] [L32] CALL __VERIFIER_assert(Y >= -129.f && Y <= 129.f) [L10] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L10] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, 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, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 25 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 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 [2022-07-13 14:17:36,986 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/float-benchs/rlim_invariant.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 d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:17:38,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:17:38,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:17:38,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:17:38,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:17:38,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:17:38,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:17:38,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:17:38,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:17:38,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:17:38,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:17:38,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:17:38,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:17:38,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:17:38,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:17:38,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:17:38,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:17:38,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:17:38,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:17:38,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:17:38,985 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:17:38,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:17:38,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:17:38,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:17:38,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:17:38,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:17:38,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:17:38,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:17:38,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:17:38,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:17:39,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:17:39,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:17:39,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:17:39,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:17:39,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:17:39,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:17:39,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:17:39,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:17:39,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:17:39,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:17:39,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:17:39,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:17:39,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 14:17:39,043 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:17:39,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:17:39,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:17:39,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:17:39,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:17:39,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:17:39,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:17:39,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:17:39,046 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:17:39,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:17:39,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:17:39,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:17:39,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:17:39,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:17:39,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:17:39,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:17:39,048 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 14:17:39,049 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 14:17:39,049 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 14:17:39,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:17:39,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:17:39,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:17:39,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:17:39,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:17:39,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:17:39,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:17:39,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:17:39,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:17:39,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:17:39,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:17:39,051 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 14:17:39,052 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 14:17:39,052 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:17:39,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:17:39,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:17:39,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 14:17:39,053 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2022-07-13 14:17:39,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:17:39,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:17:39,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:17:39,374 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:17:39,374 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:17:39,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-07-13 14:17:39,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4922d73ef/e1324271b77447f5b989ad8d9bd9c619/FLAG9b8fecf01 [2022-07-13 14:17:39,860 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:17:39,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-07-13 14:17:39,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4922d73ef/e1324271b77447f5b989ad8d9bd9c619/FLAG9b8fecf01 [2022-07-13 14:17:40,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4922d73ef/e1324271b77447f5b989ad8d9bd9c619 [2022-07-13 14:17:40,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:17:40,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:17:40,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:17:40,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:17:40,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:17:40,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:17:40" (1/1) ... [2022-07-13 14:17:40,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3e185a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40, skipping insertion in model container [2022-07-13 14:17:40,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:17:40" (1/1) ... [2022-07-13 14:17:40,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:17:40,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:17:40,446 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/float-benchs/rlim_invariant.c[451,464] [2022-07-13 14:17:40,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:17:40,481 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:17:40,499 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/float-benchs/rlim_invariant.c[451,464] [2022-07-13 14:17:40,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:17:40,544 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:17:40,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40 WrapperNode [2022-07-13 14:17:40,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:17:40,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:17:40,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:17:40,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:17:40,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40" (1/1) ... [2022-07-13 14:17:40,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40" (1/1) ... [2022-07-13 14:17:40,580 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-07-13 14:17:40,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:17:40,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:17:40,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:17:40,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:17:40,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40" (1/1) ... [2022-07-13 14:17:40,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40" (1/1) ... [2022-07-13 14:17:40,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40" (1/1) ... [2022-07-13 14:17:40,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40" (1/1) ... [2022-07-13 14:17:40,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40" (1/1) ... [2022-07-13 14:17:40,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40" (1/1) ... [2022-07-13 14:17:40,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40" (1/1) ... [2022-07-13 14:17:40,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:17:40,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:17:40,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:17:40,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:17:40,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40" (1/1) ... [2022-07-13 14:17:40,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:17:40,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:17:40,661 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) [2022-07-13 14:17:40,687 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 [2022-07-13 14:17:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:17:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 14:17:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 14:17:40,703 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 14:17:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:17:40,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:17:40,767 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:17:40,768 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:17:40,931 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:17:40,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:17:40,937 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 14:17:40,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:40 BoogieIcfgContainer [2022-07-13 14:17:40,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:17:40,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:17:40,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:17:40,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:17:40,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:17:40" (1/3) ... [2022-07-13 14:17:40,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7a553b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:17:40, skipping insertion in model container [2022-07-13 14:17:40,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:40" (2/3) ... [2022-07-13 14:17:40,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7a553b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:17:40, skipping insertion in model container [2022-07-13 14:17:40,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:40" (3/3) ... [2022-07-13 14:17:40,946 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2022-07-13 14:17:40,958 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:17:40,958 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:17:41,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:17:41,018 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@7ffc3d09, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@568e2dbc [2022-07-13 14:17:41,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:17:41,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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) [2022-07-13 14:17:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 14:17:41,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:41,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:41,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:41,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1358229485, now seen corresponding path program 1 times [2022-07-13 14:17:41,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:41,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763080068] [2022-07-13 14:17:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:41,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:41,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:41,084 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) [2022-07-13 14:17:41,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 14:17:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:41,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 14:17:41,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:17:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 14:17:41,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:17:41,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:17:41,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763080068] [2022-07-13 14:17:41,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763080068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:41,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:41,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:17:41,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750537064] [2022-07-13 14:17:41,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:41,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:17:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:17:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:17:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:17:41,298 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 14:17:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:41,321 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-07-13 14:17:41,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:17:41,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-07-13 14:17:41,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:41,331 INFO L225 Difference]: With dead ends: 42 [2022-07-13 14:17:41,331 INFO L226 Difference]: Without dead ends: 18 [2022-07-13 14:17:41,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:17:41,338 INFO L413 NwaCegarLoop]: 25 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, 25 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 [2022-07-13 14:17:41,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:17:41,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-13 14:17:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-13 14:17:41,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2022-07-13 14:17:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-07-13 14:17:41,384 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 18 [2022-07-13 14:17:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:41,385 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-07-13 14:17:41,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 14:17:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-07-13 14:17:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 14:17:41,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:41,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:41,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 14:17:41,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:17:41,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:41,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:41,593 INFO L85 PathProgramCache]: Analyzing trace with hash -37923155, now seen corresponding path program 1 times [2022-07-13 14:17:41,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:41,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142385182] [2022-07-13 14:17:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:41,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:41,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:41,598 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) [2022-07-13 14:17:41,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 14:17:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:41,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 14:17:41,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:17:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 14:17:42,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:17:42,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:17:42,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142385182] [2022-07-13 14:17:42,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142385182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:42,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:42,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 14:17:42,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607397320] [2022-07-13 14:17:42,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:42,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 14:17:42,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:17:42,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 14:17:42,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-13 14:17:42,021 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 14:17:42,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:42,637 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-07-13 14:17:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 14:17:42,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-07-13 14:17:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:42,643 INFO L225 Difference]: With dead ends: 40 [2022-07-13 14:17:42,643 INFO L226 Difference]: Without dead ends: 38 [2022-07-13 14:17:42,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-13 14:17:42,645 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 14:17:42,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 104 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 15 Unchecked, 0.4s Time] [2022-07-13 14:17:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-13 14:17:42,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2022-07-13 14:17:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:17:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-07-13 14:17:42,653 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 18 [2022-07-13 14:17:42,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:42,653 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-07-13 14:17:42,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 14:17:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-07-13 14:17:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 14:17:42,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:42,654 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:42,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-13 14:17:42,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:17:42,866 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:42,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:42,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1173892842, now seen corresponding path program 1 times [2022-07-13 14:17:42,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:42,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645374967] [2022-07-13 14:17:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:42,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:42,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:42,870 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) [2022-07-13 14:17:42,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 14:17:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:42,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 14:17:42,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:17:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 14:17:43,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:17:43,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:17:43,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645374967] [2022-07-13 14:17:43,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645374967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:43,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:43,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 14:17:43,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197608511] [2022-07-13 14:17:43,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:43,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 14:17:43,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:17:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 14:17:43,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-13 14:17:43,287 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 14:17:43,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:43,989 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-07-13 14:17:43,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 14:17:43,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-13 14:17:43,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:43,991 INFO L225 Difference]: With dead ends: 50 [2022-07-13 14:17:43,991 INFO L226 Difference]: Without dead ends: 48 [2022-07-13 14:17:43,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-13 14:17:43,993 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 48 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 14:17:43,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 88 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 133 Invalid, 0 Unknown, 27 Unchecked, 0.6s Time] [2022-07-13 14:17:43,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-13 14:17:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 30. [2022-07-13 14:17:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:17:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-07-13 14:17:44,007 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 19 [2022-07-13 14:17:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:44,008 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-07-13 14:17:44,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 14:17:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-07-13 14:17:44,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 14:17:44,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:44,010 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:44,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-13 14:17:44,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:17:44,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:44,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:44,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1173833260, now seen corresponding path program 1 times [2022-07-13 14:17:44,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:44,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509816610] [2022-07-13 14:17:44,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:44,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:44,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:44,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:17:44,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-13 14:17:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:44,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 14:17:44,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:17:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 14:17:44,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:17:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 14:17:44,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:17:44,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509816610] [2022-07-13 14:17:44,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509816610] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 14:17:44,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 14:17:44,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-13 14:17:44,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362626824] [2022-07-13 14:17:44,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 14:17:44,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 14:17:44,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:17:44,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 14:17:44,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-13 14:17:44,702 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 14:17:45,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:45,774 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-07-13 14:17:45,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 14:17:45,775 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 19 [2022-07-13 14:17:45,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:45,776 INFO L225 Difference]: With dead ends: 45 [2022-07-13 14:17:45,776 INFO L226 Difference]: Without dead ends: 43 [2022-07-13 14:17:45,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-07-13 14:17:45,777 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 28 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 14:17:45,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 135 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 14:17:45,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-13 14:17:45,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2022-07-13 14:17:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:17:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-07-13 14:17:45,784 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 19 [2022-07-13 14:17:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:45,785 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-07-13 14:17:45,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 14:17:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-07-13 14:17:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 14:17:45,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:45,786 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:45,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-13 14:17:45,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:17:45,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:45,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:45,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1809540222, now seen corresponding path program 1 times [2022-07-13 14:17:45,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:45,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703768828] [2022-07-13 14:17:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:45,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:45,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:46,000 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:17:46,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-13 14:17:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:46,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 14:17:46,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:18:20,585 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 3 DAG size of output: 1 (called from [L 927] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-13 14:18:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 14:18:25,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:18:51,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:18:51,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703768828] [2022-07-13 14:18:51,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703768828] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 14:18:51,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2071421591] [2022-07-13 14:18:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:18:51,457 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-13 14:18:51,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-13 14:18:51,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-13 14:18:51,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-07-13 14:18:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:18:51,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 14:18:51,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:19:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 14:19:14,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:19:26,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2071421591] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 14:19:26,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 14:19:26,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 19 [2022-07-13 14:19:26,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158715514] [2022-07-13 14:19:26,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 14:19:26,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 14:19:26,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:19:26,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 14:19:26,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=609, Unknown=12, NotChecked=0, Total=756 [2022-07-13 14:19:26,756 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 15 states have internal predecessors, (33), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-13 14:20:18,385 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 14:20:21,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:20:21,748 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2022-07-13 14:20:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 14:20:21,750 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 15 states have internal predecessors, (33), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 35 [2022-07-13 14:20:21,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:20:21,750 INFO L225 Difference]: With dead ends: 55 [2022-07-13 14:20:21,750 INFO L226 Difference]: Without dead ends: 53 [2022-07-13 14:20:21,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 125.2s TimeCoverageRelationStatistics Valid=265, Invalid=1120, Unknown=21, NotChecked=0, Total=1406 [2022-07-13 14:20:21,752 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 14:20:21,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 87 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 64 Invalid, 0 Unknown, 80 Unchecked, 0.3s Time] [2022-07-13 14:20:21,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-07-13 14:20:21,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2022-07-13 14:20:21,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 14:20:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2022-07-13 14:20:21,768 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 35 [2022-07-13 14:20:21,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:20:21,769 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2022-07-13 14:20:21,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 15 states have internal predecessors, (33), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-13 14:20:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2022-07-13 14:20:21,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 14:20:21,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:20:21,771 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:20:21,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-07-13 14:20:21,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-13 14:20:22,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:20:22,176 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:20:22,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:20:22,177 INFO L85 PathProgramCache]: Analyzing trace with hash -259447071, now seen corresponding path program 1 times [2022-07-13 14:20:22,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:20:22,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613641199] [2022-07-13 14:20:22,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:20:22,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:20:22,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:20:22,179 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:20:22,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-13 14:20:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:20:22,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 14:20:22,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:21:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 14:21:00,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:21:38,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:21:38,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613641199] [2022-07-13 14:21:38,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613641199] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 14:21:38,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1260159013] [2022-07-13 14:21:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:21:38,875 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-13 14:21:38,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-13 14:21:38,877 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-13 14:21:38,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-07-13 14:21:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:21:39,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 14:21:39,256 INFO L286 TraceCheckSpWp]: Computing forward predicates...