./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.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.v+nlh-reducer.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 dab30decfbae0c46e4e194ef831d046546cde9953841ff8fbd0a15005d51c024 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:17:27,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:17:27,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:17:27,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:17:27,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:17:27,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:17:27,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:17:27,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:17:27,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:17:27,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:17:27,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:17:27,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:17:27,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:17:27,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:17:27,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:17:27,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:17:27,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:17:27,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:17:27,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:17:27,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:17:27,176 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:17:27,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:17:27,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:17:27,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:17:27,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:17:27,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:17:27,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:17:27,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:17:27,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:17:27,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:17:27,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:17:27,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:17:27,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:17:27,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:17:27,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:17:27,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:17:27,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:17:27,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:17:27,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:17:27,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:17:27,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:17:27,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:17:27,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 14:17:27,218 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:17:27,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:17:27,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:17:27,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:17:27,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:17:27,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:17:27,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:17:27,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:17:27,221 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:17:27,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:17:27,222 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:17:27,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 14:17:27,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:17:27,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:17:27,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:17:27,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:17:27,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:17:27,223 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:17:27,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:17:27,223 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:17:27,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:17:27,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:17:27,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:17:27,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:17:27,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:17:27,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:17:27,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:17:27,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:17:27,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 14:17:27,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 14:17:27,225 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:17:27,225 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:17:27,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:17:27,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dab30decfbae0c46e4e194ef831d046546cde9953841ff8fbd0a15005d51c024 [2022-07-13 14:17:27,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:17:27,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:17:27,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:17:27,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:17:27,464 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:17:27,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c [2022-07-13 14:17:27,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b39d6269f/5045e2a4e14b4c21b8a4d4b5a428e0d0/FLAGe34a6a183 [2022-07-13 14:17:27,846 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:17:27,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c [2022-07-13 14:17:27,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b39d6269f/5045e2a4e14b4c21b8a4d4b5a428e0d0/FLAGe34a6a183 [2022-07-13 14:17:28,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b39d6269f/5045e2a4e14b4c21b8a4d4b5a428e0d0 [2022-07-13 14:17:28,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:17:28,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:17:28,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:17:28,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:17:28,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:17:28,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:17:28" (1/1) ... [2022-07-13 14:17:28,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb0b973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28, skipping insertion in model container [2022-07-13 14:17:28,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:17:28" (1/1) ... [2022-07-13 14:17:28,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:17:28,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:17:28,478 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.v+nlh-reducer.c[1545,1558] [2022-07-13 14:17:28,490 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.v+nlh-reducer.c[2749,2762] [2022-07-13 14:17:28,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:17:28,511 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:17:28,536 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.v+nlh-reducer.c[1545,1558] [2022-07-13 14:17:28,550 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.v+nlh-reducer.c[2749,2762] [2022-07-13 14:17:28,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:17:28,567 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:17:28,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28 WrapperNode [2022-07-13 14:17:28,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:17:28,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:17:28,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:17:28,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:17:28,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28" (1/1) ... [2022-07-13 14:17:28,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28" (1/1) ... [2022-07-13 14:17:28,602 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 162 [2022-07-13 14:17:28,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:17:28,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:17:28,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:17:28,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:17:28,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28" (1/1) ... [2022-07-13 14:17:28,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28" (1/1) ... [2022-07-13 14:17:28,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28" (1/1) ... [2022-07-13 14:17:28,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28" (1/1) ... [2022-07-13 14:17:28,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28" (1/1) ... [2022-07-13 14:17:28,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28" (1/1) ... [2022-07-13 14:17:28,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28" (1/1) ... [2022-07-13 14:17:28,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:17:28,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:17:28,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:17:28,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:17:28,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28" (1/1) ... [2022-07-13 14:17:28,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:17:28,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:17:28,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 14:17:28,677 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 14:17:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:17:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 14:17:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:17:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:17:28,760 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:17:28,761 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:17:28,944 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:17:28,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:17:28,948 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 14:17:28,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:28 BoogieIcfgContainer [2022-07-13 14:17:28,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:17:28,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:17:28,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:17:28,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:17:28,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:17:28" (1/3) ... [2022-07-13 14:17:28,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a956ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:17:28, skipping insertion in model container [2022-07-13 14:17:28,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:28" (2/3) ... [2022-07-13 14:17:28,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a956ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:17:28, skipping insertion in model container [2022-07-13 14:17:28,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:28" (3/3) ... [2022-07-13 14:17:28,957 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.v+nlh-reducer.c [2022-07-13 14:17:28,970 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:17:28,970 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 14:17:29,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:17:29,017 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@23c6394e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f314bf1 [2022-07-13 14:17:29,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 14:17:29,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:29,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 14:17:29,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:29,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:29,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:29,033 INFO L85 PathProgramCache]: Analyzing trace with hash 350471322, now seen corresponding path program 1 times [2022-07-13 14:17:29,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:17:29,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236661627] [2022-07-13 14:17:29,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:29,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:17:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:17:29,125 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 14:17:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:17:29,168 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 14:17:29,171 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 14:17:29,172 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-13 14:17:29,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-13 14:17:29,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 14:17:29,177 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 14:17:29,179 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:17:29,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:17:29 BoogieIcfgContainer [2022-07-13 14:17:29,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:17:29,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:17:29,224 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:17:29,225 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:17:29,225 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:28" (3/4) ... [2022-07-13 14:17:29,228 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 14:17:29,228 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:17:29,229 INFO L158 Benchmark]: Toolchain (without parser) took 962.66ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 64.5MB in the beginning and 67.1MB in the end (delta: -2.6MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-07-13 14:17:29,230 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:17:29,231 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.63ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 64.2MB in the beginning and 98.4MB in the end (delta: -34.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:17:29,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.72ms. Allocated memory is still 123.7MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:17:29,232 INFO L158 Benchmark]: Boogie Preprocessor took 37.42ms. Allocated memory is still 123.7MB. Free memory was 96.3MB in the beginning and 95.5MB in the end (delta: 805.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:17:29,233 INFO L158 Benchmark]: RCFGBuilder took 309.25ms. Allocated memory is still 123.7MB. Free memory was 95.5MB in the beginning and 83.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 14:17:29,233 INFO L158 Benchmark]: TraceAbstraction took 271.79ms. Allocated memory is still 123.7MB. Free memory was 82.4MB in the beginning and 67.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-13 14:17:29,233 INFO L158 Benchmark]: Witness Printer took 4.80ms. Allocated memory is still 123.7MB. Free memory was 67.7MB in the beginning and 67.1MB in the end (delta: 573.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:17:29,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.63ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 64.2MB in the beginning and 98.4MB in the end (delta: -34.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.72ms. Allocated memory is still 123.7MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.42ms. Allocated memory is still 123.7MB. Free memory was 96.3MB in the beginning and 95.5MB in the end (delta: 805.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 309.25ms. Allocated memory is still 123.7MB. Free memory was 95.5MB in the beginning and 83.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 271.79ms. Allocated memory is still 123.7MB. Free memory was 82.4MB in the beginning and 67.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.80ms. Allocated memory is still 123.7MB. Free memory was 67.7MB in the beginning and 67.1MB in the end (delta: 573.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 70]: 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 52, overapproximation of someBinaryDOUBLEComparisonOperation at line 57, overapproximation of to_real at line 27, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L1] int __return_main; [L12] int __tmp_160_0; [L13] int __tmp_160_1; [L14] int __tmp_160_2; [L15] int __tmp_142_0; [L16] int __tmp_142_1; [L17] int __tmp_136_0; [L18] int __return_165; VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L21] float main__X; [L22] float main__Y; [L23] float main__S; [L24] float main__R; [L25] float main__D; [L26] int main__i; [L27] main__Y = 0 [L28] main__i = 0 VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__i=0] [L29] COND TRUE main__i < 100000 [L31] main__X = __VERIFIER_nondet_float() [L32] main__D = __VERIFIER_nondet_float() [L33] int main____CPAchecker_TMP_0; VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__D=50, main__i=0, main__X=49] [L34] COND TRUE main__X >= -128.0 VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__D=50, main__i=0, main__X=49] [L36] COND TRUE main__X <= 128.0 [L38] main____CPAchecker_TMP_0 = 1 VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=50, main__i=0, main__X=49] [L39] COND TRUE main____CPAchecker_TMP_0 != 0 [L41] int main____CPAchecker_TMP_1; VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=50, main__i=0, main__X=49] [L42] COND TRUE main__D >= 0.0 VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=50, main__i=0, main__X=49] [L44] COND TRUE main__D <= 16.0 [L46] main____CPAchecker_TMP_1 = 1 VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__X=49] [L47] COND TRUE main____CPAchecker_TMP_1 != 0 [L49] main__S = main__Y [L50] main__Y = main__X [L51] main__R = main__X - main__S VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__S=51, main__X=49, main__Y=49] [L52] COND TRUE main__R <= (-main__D) [L54] main__Y = main__S - main__D VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__S=51, main__X=49] [L56] int main____CPAchecker_TMP_2; VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__S=51, main__X=49] [L57] COND FALSE !(main__Y >= -129.0) VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__S=51, main__X=49] [L216] main____CPAchecker_TMP_2 = 0 VAL [__return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=50, main__i=0, main__S=51, main__X=49] [L64] int __tmp_1; [L65] __tmp_1 = main____CPAchecker_TMP_2 [L66] int __VERIFIER_assert__cond; [L67] __VERIFIER_assert__cond = __tmp_1 VAL [__return_165=0, __return_main=0, __tmp_1=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=50, main__i=0, main__S=51, main__X=49] [L68] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_165=0, __return_main=0, __tmp_1=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=50, main__i=0, main__S=51, main__X=49] [L70] reach_error() VAL [__return_165=0, __return_main=0, __tmp_1=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=50, main__i=0, main__S=51, main__X=49] - UnprovableResult [Line: 126]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-13 14:17:29,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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.v+nlh-reducer.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 dab30decfbae0c46e4e194ef831d046546cde9953841ff8fbd0a15005d51c024 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:17:30,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:17:30,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:17:31,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:17:31,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:17:31,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:17:31,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:17:31,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:17:31,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:17:31,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:17:31,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:17:31,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:17:31,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:17:31,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:17:31,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:17:31,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:17:31,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:17:31,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:17:31,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:17:31,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:17:31,088 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:17:31,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:17:31,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:17:31,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:17:31,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:17:31,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:17:31,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:17:31,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:17:31,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:17:31,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:17:31,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:17:31,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:17:31,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:17:31,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:17:31,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:17:31,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:17:31,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:17:31,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:17:31,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:17:31,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:17:31,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:17:31,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:17:31,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 14:17:31,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:17:31,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:17:31,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:17:31,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:17:31,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:17:31,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:17:31,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:17:31,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:17:31,138 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:17:31,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:17:31,139 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:17:31,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:17:31,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:17:31,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:17:31,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:17:31,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:17:31,140 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 14:17:31,140 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 14:17:31,140 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 14:17:31,140 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:17:31,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:17:31,140 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:17:31,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:17:31,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:17:31,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:17:31,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:17:31,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:17:31,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:17:31,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:17:31,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:17:31,142 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 14:17:31,142 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 14:17:31,142 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:17:31,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:17:31,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:17:31,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 14:17:31,143 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dab30decfbae0c46e4e194ef831d046546cde9953841ff8fbd0a15005d51c024 [2022-07-13 14:17:31,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:17:31,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:17:31,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:17:31,423 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:17:31,424 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:17:31,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c [2022-07-13 14:17:31,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43485f8ac/9a862c5f4d5540ca90fb3469de60af2b/FLAG96a2aa888 [2022-07-13 14:17:31,838 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:17:31,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c [2022-07-13 14:17:31,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43485f8ac/9a862c5f4d5540ca90fb3469de60af2b/FLAG96a2aa888 [2022-07-13 14:17:31,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43485f8ac/9a862c5f4d5540ca90fb3469de60af2b [2022-07-13 14:17:31,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:17:31,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:17:31,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:17:31,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:17:31,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:17:31,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:17:31" (1/1) ... [2022-07-13 14:17:31,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46befeff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:31, skipping insertion in model container [2022-07-13 14:17:31,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:17:31" (1/1) ... [2022-07-13 14:17:31,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:17:31,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:17:32,065 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.v+nlh-reducer.c[1545,1558] [2022-07-13 14:17:32,082 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.v+nlh-reducer.c[2749,2762] [2022-07-13 14:17:32,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:17:32,136 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:17:32,159 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.v+nlh-reducer.c[1545,1558] [2022-07-13 14:17:32,163 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.v+nlh-reducer.c[2749,2762] [2022-07-13 14:17:32,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:17:32,183 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:17:32,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:32 WrapperNode [2022-07-13 14:17:32,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:17:32,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:17:32,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:17:32,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:17:32,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:32" (1/1) ... [2022-07-13 14:17:32,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:32" (1/1) ... [2022-07-13 14:17:32,224 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 163 [2022-07-13 14:17:32,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:17:32,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:17:32,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:17:32,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:17:32,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:32" (1/1) ... [2022-07-13 14:17:32,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:32" (1/1) ... [2022-07-13 14:17:32,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:32" (1/1) ... [2022-07-13 14:17:32,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:32" (1/1) ... [2022-07-13 14:17:32,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:32" (1/1) ... [2022-07-13 14:17:32,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:32" (1/1) ... [2022-07-13 14:17:32,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:32" (1/1) ... [2022-07-13 14:17:32,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:17:32,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:17:32,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:17:32,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:17:32,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:32" (1/1) ... [2022-07-13 14:17:32,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:17:32,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:17:32,296 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 14:17:32,312 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 14:17:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:17:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 14:17:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:17:32,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:17:32,429 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:17:32,440 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:17:34,136 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:17:34,140 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:17:34,141 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 14:17:34,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:34 BoogieIcfgContainer [2022-07-13 14:17:34,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:17:34,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:17:34,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:17:34,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:17:34,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:17:31" (1/3) ... [2022-07-13 14:17:34,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e4c52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:17:34, skipping insertion in model container [2022-07-13 14:17:34,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:32" (2/3) ... [2022-07-13 14:17:34,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e4c52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:17:34, skipping insertion in model container [2022-07-13 14:17:34,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:34" (3/3) ... [2022-07-13 14:17:34,149 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.v+nlh-reducer.c [2022-07-13 14:17:34,158 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:17:34,159 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 14:17:34,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:17:34,193 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@8270bab, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@36649be6 [2022-07-13 14:17:34,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 14:17:34,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 14:17:34,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:34,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:34,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:34,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash 350471322, now seen corresponding path program 1 times [2022-07-13 14:17:34,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:34,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997418042] [2022-07-13 14:17:34,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:34,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:34,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:34,220 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 14:17:34,221 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 14:17:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:34,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 14:17:34,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:17:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:17:38,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:17:38,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:17:38,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997418042] [2022-07-13 14:17:38,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997418042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:38,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:38,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 14:17:38,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554476356] [2022-07-13 14:17:38,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:38,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 14:17:38,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:17:38,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 14:17:38,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-13 14:17:38,529 INFO L87 Difference]: Start difference. First operand has 44 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:49,452 INFO L93 Difference]: Finished difference Result 122 states and 167 transitions. [2022-07-13 14:17:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 14:17:49,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 14:17:49,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:49,463 INFO L225 Difference]: With dead ends: 122 [2022-07-13 14:17:49,463 INFO L226 Difference]: Without dead ends: 68 [2022-07-13 14:17:49,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-13 14:17:49,467 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 76 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-13 14:17:49,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 291 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 40 Unchecked, 9.5s Time] [2022-07-13 14:17:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-13 14:17:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 41. [2022-07-13 14:17:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2022-07-13 14:17:49,490 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 16 [2022-07-13 14:17:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:49,491 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2022-07-13 14:17:49,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2022-07-13 14:17:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 14:17:49,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:49,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:49,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-13 14:17:49,699 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 14:17:49,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:49,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:49,700 INFO L85 PathProgramCache]: Analyzing trace with hash 257195701, now seen corresponding path program 1 times [2022-07-13 14:17:49,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:49,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907838310] [2022-07-13 14:17:49,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:49,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:49,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:49,704 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 14:17:49,705 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 14:17:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:49,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 14:17:49,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:17:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:17:49,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:17:49,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:17:49,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907838310] [2022-07-13 14:17:49,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907838310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:49,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:49,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 14:17:49,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308522850] [2022-07-13 14:17:49,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:49,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 14:17:49,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:17:49,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 14:17:49,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 14:17:49,801 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:49,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:49,822 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2022-07-13 14:17:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 14:17:49,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 14:17:49,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:49,824 INFO L225 Difference]: With dead ends: 66 [2022-07-13 14:17:49,824 INFO L226 Difference]: Without dead ends: 64 [2022-07-13 14:17:49,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:17:49,825 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 32 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:17:49,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 140 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:17:49,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-13 14:17:49,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2022-07-13 14:17:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:49,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2022-07-13 14:17:49,830 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 16 [2022-07-13 14:17:49,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:49,831 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2022-07-13 14:17:49,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2022-07-13 14:17:49,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 14:17:49,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:49,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:49,842 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 14:17:50,039 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 14:17:50,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:50,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1580255705, now seen corresponding path program 1 times [2022-07-13 14:17:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:50,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73409619] [2022-07-13 14:17:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:50,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:50,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:50,043 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 14:17:50,043 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 14:17:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:50,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 14:17:50,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:17:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:17:53,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:17:53,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:17:53,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73409619] [2022-07-13 14:17:53,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73409619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:53,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:53,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 14:17:53,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002637808] [2022-07-13 14:17:53,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:53,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 14:17:53,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:17:53,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 14:17:53,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:17:53,640 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:00,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:18:00,284 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2022-07-13 14:18:00,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 14:18:00,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-13 14:18:00,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:18:00,293 INFO L225 Difference]: With dead ends: 72 [2022-07-13 14:18:00,293 INFO L226 Difference]: Without dead ends: 47 [2022-07-13 14:18:00,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-13 14:18:00,294 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 69 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-13 14:18:00,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 74 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 26 Unchecked, 4.7s Time] [2022-07-13 14:18:00,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-13 14:18:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2022-07-13 14:18:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2022-07-13 14:18:00,298 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 17 [2022-07-13 14:18:00,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:18:00,299 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2022-07-13 14:18:00,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:00,299 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2022-07-13 14:18:00,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 14:18:00,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:18:00,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:18:00,311 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 14:18:00,508 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 14:18:00,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:18:00,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:18:00,509 INFO L85 PathProgramCache]: Analyzing trace with hash -939704229, now seen corresponding path program 1 times [2022-07-13 14:18:00,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:18:00,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154740555] [2022-07-13 14:18:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:18:00,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:18:00,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:18:00,511 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 14:18:00,512 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 14:18:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:18:00,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 14:18:00,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:18:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:18:03,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:18:03,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:18:03,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154740555] [2022-07-13 14:18:03,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154740555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:18:03,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:18:03,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 14:18:03,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528823162] [2022-07-13 14:18:03,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:18:03,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 14:18:03,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:18:03,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 14:18:03,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:18:03,513 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:25,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:18:25,192 INFO L93 Difference]: Finished difference Result 134 states and 177 transitions. [2022-07-13 14:18:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 14:18:25,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-13 14:18:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:18:25,210 INFO L225 Difference]: With dead ends: 134 [2022-07-13 14:18:25,210 INFO L226 Difference]: Without dead ends: 109 [2022-07-13 14:18:25,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:18:25,211 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 129 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-07-13 14:18:25,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 94 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 19.1s Time] [2022-07-13 14:18:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-13 14:18:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 54. [2022-07-13 14:18:25,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 53 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:25,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2022-07-13 14:18:25,216 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 17 [2022-07-13 14:18:25,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:18:25,216 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2022-07-13 14:18:25,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:25,217 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2022-07-13 14:18:25,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 14:18:25,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:18:25,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:18:25,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-13 14:18:25,427 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 14:18:25,428 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:18:25,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:18:25,428 INFO L85 PathProgramCache]: Analyzing trace with hash -530119343, now seen corresponding path program 1 times [2022-07-13 14:18:25,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:18:25,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625663156] [2022-07-13 14:18:25,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:18:25,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:18:25,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:18:25,431 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 14:18:25,433 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 14:18:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:18:25,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 14:18:25,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:18:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:18:31,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:18:31,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:18:31,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625663156] [2022-07-13 14:18:31,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625663156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:18:31,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:18:31,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 14:18:31,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365091235] [2022-07-13 14:18:31,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:18:31,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 14:18:31,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:18:31,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 14:18:31,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-13 14:18:31,852 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:39,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:18:39,951 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2022-07-13 14:18:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 14:18:39,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-13 14:18:39,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:18:39,957 INFO L225 Difference]: With dead ends: 92 [2022-07-13 14:18:39,957 INFO L226 Difference]: Without dead ends: 57 [2022-07-13 14:18:39,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-13 14:18:39,958 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 18 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-13 14:18:39,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 110 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 8 Unchecked, 6.3s Time] [2022-07-13 14:18:39,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-13 14:18:39,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-07-13 14:18:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 53 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2022-07-13 14:18:39,963 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 17 [2022-07-13 14:18:39,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:18:39,963 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2022-07-13 14:18:39,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2022-07-13 14:18:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 14:18:39,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:18:39,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:18:39,974 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 14:18:40,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:18:40,173 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:18:40,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:18:40,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1061509134, now seen corresponding path program 1 times [2022-07-13 14:18:40,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:18:40,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104903253] [2022-07-13 14:18:40,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:18:40,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:18:40,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:18:40,174 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:18:40,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-13 14:18:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:18:40,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 14:18:40,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:18:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:18:46,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:18:46,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:18:46,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104903253] [2022-07-13 14:18:46,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104903253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:18:46,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:18:46,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 14:18:46,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069711744] [2022-07-13 14:18:46,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:18:46,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 14:18:46,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:18:46,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 14:18:46,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-13 14:18:46,877 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:54,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:18:54,801 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2022-07-13 14:18:54,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 14:18:54,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 14:18:54,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:18:54,811 INFO L225 Difference]: With dead ends: 86 [2022-07-13 14:18:54,811 INFO L226 Difference]: Without dead ends: 51 [2022-07-13 14:18:54,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-13 14:18:54,812 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 51 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-13 14:18:54,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 80 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 25 Unchecked, 5.9s Time] [2022-07-13 14:18:54,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-13 14:18:54,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2022-07-13 14:18:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:54,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-07-13 14:18:54,821 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 18 [2022-07-13 14:18:54,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:18:54,821 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-07-13 14:18:54,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:54,822 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-07-13 14:18:54,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 14:18:54,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:18:54,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:18:54,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-13 14:18:55,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:18:55,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:18:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:18:55,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1099426199, now seen corresponding path program 1 times [2022-07-13 14:18:55,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:18:55,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445649769] [2022-07-13 14:18:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:18:55,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:18:55,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:18:55,030 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 14:18:55,032 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 14:18:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:18:55,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 14:18:55,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:18:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:18:55,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:18:55,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:18:55,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445649769] [2022-07-13 14:18:55,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445649769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:18:55,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:18:55,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 14:18:55,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310252384] [2022-07-13 14:18:55,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:18:55,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 14:18:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:18:55,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 14:18:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 14:18:55,174 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:55,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:18:55,202 INFO L93 Difference]: Finished difference Result 78 states and 104 transitions. [2022-07-13 14:18:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 14:18:55,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-13 14:18:55,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:18:55,203 INFO L225 Difference]: With dead ends: 78 [2022-07-13 14:18:55,203 INFO L226 Difference]: Without dead ends: 76 [2022-07-13 14:18:55,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:18:55,205 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 45 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:18:55,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 153 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:18:55,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-13 14:18:55,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 48. [2022-07-13 14:18:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 47 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2022-07-13 14:18:55,213 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 30 [2022-07-13 14:18:55,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:18:55,213 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2022-07-13 14:18:55,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:55,214 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2022-07-13 14:18:55,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 14:18:55,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:18:55,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:18:55,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-13 14:18:55,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:18:55,415 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:18:55,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:18:55,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1082415538, now seen corresponding path program 1 times [2022-07-13 14:18:55,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:18:55,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815293244] [2022-07-13 14:18:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:18:55,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:18:55,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:18:55,417 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:18:55,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-13 14:18:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:18:55,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 14:18:55,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:20:05,264 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_13| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_21| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_21|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (fp.leq .cse2 .cse1) (fp.geq .cse0 (_ +zero 11 53)) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_21|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_13| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_21|)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53))))) is different from false [2022-07-13 14:20:07,279 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_13| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_21| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_21|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (fp.leq .cse2 .cse1) (fp.geq .cse0 (_ +zero 11 53)) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_21|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_13| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_21|)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53))))) is different from true [2022-07-13 14:21:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:21:27,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:21:27,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:21:27,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815293244] [2022-07-13 14:21:27,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815293244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:21:27,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:21:27,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 14:21:27,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288883896] [2022-07-13 14:21:27,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:21:27,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 14:21:27,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:21:27,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 14:21:27,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=4, NotChecked=20, Total=156 [2022-07-13 14:21:27,848 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:21:31,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:21:31,832 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-07-13 14:21:31,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 14:21:31,843 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-13 14:21:31,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:21:31,843 INFO L225 Difference]: With dead ends: 69 [2022-07-13 14:21:31,843 INFO L226 Difference]: Without dead ends: 67 [2022-07-13 14:21:31,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=4, NotChecked=22, Total=182 [2022-07-13 14:21:31,844 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:21:31,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 77 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 94 Unchecked, 2.0s Time] [2022-07-13 14:21:31,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-13 14:21:31,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2022-07-13 14:21:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.328125) internal successors, (85), 64 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:21:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 85 transitions. [2022-07-13 14:21:31,849 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 85 transitions. Word has length 30 [2022-07-13 14:21:31,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:21:31,849 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 85 transitions. [2022-07-13 14:21:31,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:21:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 85 transitions. [2022-07-13 14:21:31,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 14:21:31,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:21:31,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:21:31,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-13 14:21:32,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:21:32,060 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:21:32,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:21:32,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2049228407, now seen corresponding path program 1 times [2022-07-13 14:21:32,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:21:32,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904990830] [2022-07-13 14:21:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:21:32,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:21:32,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:21:32,062 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:21:32,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-13 14:21:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:21:32,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 14:21:32,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:21:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:21:32,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:21:32,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:21:32,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904990830] [2022-07-13 14:21:32,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904990830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:21:32,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:21:32,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 14:21:32,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851271191] [2022-07-13 14:21:32,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:21:32,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 14:21:32,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:21:32,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 14:21:32,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:21:32,187 INFO L87 Difference]: Start difference. First operand 65 states and 85 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:21:32,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:21:32,270 INFO L93 Difference]: Finished difference Result 99 states and 131 transitions. [2022-07-13 14:21:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 14:21:32,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-13 14:21:32,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:21:32,271 INFO L225 Difference]: With dead ends: 99 [2022-07-13 14:21:32,271 INFO L226 Difference]: Without dead ends: 63 [2022-07-13 14:21:32,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:21:32,272 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 14:21:32,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 14:21:32,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-07-13 14:21:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-07-13 14:21:32,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 62 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:21:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2022-07-13 14:21:32,277 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 30 [2022-07-13 14:21:32,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:21:32,278 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2022-07-13 14:21:32,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:21:32,278 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2022-07-13 14:21:32,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 14:21:32,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:21:32,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:21:32,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-13 14:21:32,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:21:32,479 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:21:32,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:21:32,479 INFO L85 PathProgramCache]: Analyzing trace with hash -345347405, now seen corresponding path program 1 times [2022-07-13 14:21:32,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:21:32,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903287021] [2022-07-13 14:21:32,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:21:32,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:21:32,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:21:32,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:21:32,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-13 14:21:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:21:32,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 14:21:32,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:21:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:21:32,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:21:32,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:21:32,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903287021] [2022-07-13 14:21:32,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903287021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:21:32,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:21:32,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 14:21:32,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250546259] [2022-07-13 14:21:32,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:21:32,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 14:21:32,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:21:32,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 14:21:32,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:21:32,604 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:21:32,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:21:32,690 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2022-07-13 14:21:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 14:21:32,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-13 14:21:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:21:32,691 INFO L225 Difference]: With dead ends: 88 [2022-07-13 14:21:32,691 INFO L226 Difference]: Without dead ends: 56 [2022-07-13 14:21:32,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:21:32,692 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 14:21:32,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 14:21:32,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-13 14:21:32,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-13 14:21:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:21:32,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-07-13 14:21:32,696 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 30 [2022-07-13 14:21:32,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:21:32,697 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-07-13 14:21:32,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:21:32,697 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-07-13 14:21:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 14:21:32,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:21:32,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:21:32,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-13 14:21:32,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:21:32,907 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:21:32,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:21:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1541729971, now seen corresponding path program 1 times [2022-07-13 14:21:32,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:21:32,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114876374] [2022-07-13 14:21:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:21:32,908 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:21:32,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:21:32,909 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:21:32,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-13 14:21:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:21:33,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 14:21:33,069 INFO L286 TraceCheckSpWp]: Computing forward predicates...