./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/filter2_reinit.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/filter2_reinit.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 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:37:12,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:37:12,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:37:12,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:37:12,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:37:12,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:37:12,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:37:12,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:37:12,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:37:12,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:37:12,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:37:12,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:37:12,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:37:12,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:37:12,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:37:12,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:37:12,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:37:12,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:37:12,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:37:12,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:37:12,081 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:37:12,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:37:12,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:37:12,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:37:12,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:37:12,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:37:12,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:37:12,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:37:12,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:37:12,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:37:12,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:37:12,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:37:12,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:37:12,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:37:12,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:37:12,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:37:12,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:37:12,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:37:12,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:37:12,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:37:12,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:37:12,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:37:12,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:37:12,131 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:37:12,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:37:12,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:37:12,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:37:12,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:37:12,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:37:12,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:37:12,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:37:12,134 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:37:12,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:37:12,135 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:37:12,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:37:12,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:37:12,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:37:12,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:37:12,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:37:12,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:37:12,137 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:37:12,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:37:12,138 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:37:12,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:37:12,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:37:12,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:37:12,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:37:12,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:37:12,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:37:12,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:37:12,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:37:12,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:37:12,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:37:12,140 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:37:12,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:37:12,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:37:12,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 [2022-07-19 13:37:12,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:37:12,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:37:12,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:37:12,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:37:12,430 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:37:12,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2_reinit.c [2022-07-19 13:37:12,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5de4da4e3/2efc99b5eb8d459696ae4b2c84ce5d73/FLAG89b107dde [2022-07-19 13:37:12,889 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:37:12,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_reinit.c [2022-07-19 13:37:12,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5de4da4e3/2efc99b5eb8d459696ae4b2c84ce5d73/FLAG89b107dde [2022-07-19 13:37:12,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5de4da4e3/2efc99b5eb8d459696ae4b2c84ce5d73 [2022-07-19 13:37:12,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:37:12,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:37:12,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:37:12,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:37:12,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:37:12,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:37:12" (1/1) ... [2022-07-19 13:37:12,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732a518c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:12, skipping insertion in model container [2022-07-19 13:37:12,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:37:12" (1/1) ... [2022-07-19 13:37:12,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:37:12,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:37:13,128 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/filter2_reinit.c[700,713] [2022-07-19 13:37:13,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:37:13,154 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:37:13,167 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/filter2_reinit.c[700,713] [2022-07-19 13:37:13,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:37:13,193 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:37:13,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:13 WrapperNode [2022-07-19 13:37:13,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:37:13,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:37:13,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:37:13,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:37:13,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:13" (1/1) ... [2022-07-19 13:37:13,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:13" (1/1) ... [2022-07-19 13:37:13,224 INFO L137 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2022-07-19 13:37:13,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:37:13,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:37:13,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:37:13,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:37:13,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:13" (1/1) ... [2022-07-19 13:37:13,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:13" (1/1) ... [2022-07-19 13:37:13,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:13" (1/1) ... [2022-07-19 13:37:13,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:13" (1/1) ... [2022-07-19 13:37:13,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:13" (1/1) ... [2022-07-19 13:37:13,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:13" (1/1) ... [2022-07-19 13:37:13,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:13" (1/1) ... [2022-07-19 13:37:13,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:37:13,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:37:13,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:37:13,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:37:13,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:13" (1/1) ... [2022-07-19 13:37:13,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:37:13,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:37:13,296 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) [2022-07-19 13:37:13,322 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 [2022-07-19 13:37:13,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:37:13,341 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 13:37:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 13:37:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:37:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:37:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:37:13,392 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:37:13,394 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:37:13,536 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:37:13,541 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:37:13,541 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 13:37:13,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:37:13 BoogieIcfgContainer [2022-07-19 13:37:13,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:37:13,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:37:13,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:37:13,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:37:13,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:37:12" (1/3) ... [2022-07-19 13:37:13,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaba51f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:37:13, skipping insertion in model container [2022-07-19 13:37:13,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:13" (2/3) ... [2022-07-19 13:37:13,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaba51f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:37:13, skipping insertion in model container [2022-07-19 13:37:13,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:37:13" (3/3) ... [2022-07-19 13:37:13,549 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2022-07-19 13:37:13,561 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:37:13,575 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:37:13,628 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:37:13,633 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@a581ffc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56c3eb7b [2022-07-19 13:37:13,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:37:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 13:37:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 13:37:13,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:37:13,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:37:13,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:37:13,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:37:13,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1343975806, now seen corresponding path program 1 times [2022-07-19 13:37:13,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:37:13,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19543277] [2022-07-19 13:37:13,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:37:13,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:37:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:37:13,780 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:37:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:37:13,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:37:13,845 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:37:13,848 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:37:13,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:37:13,854 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 13:37:13,858 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:37:13,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:37:13 BoogieIcfgContainer [2022-07-19 13:37:13,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:37:13,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:37:13,889 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:37:13,889 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:37:13,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:37:13" (3/4) ... [2022-07-19 13:37:13,892 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:37:13,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:37:13,893 INFO L158 Benchmark]: Toolchain (without parser) took 974.05ms. Allocated memory is still 140.5MB. Free memory was 106.9MB in the beginning and 87.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2022-07-19 13:37:13,894 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 53.4MB in the beginning and 53.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:37:13,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.42ms. Allocated memory is still 140.5MB. Free memory was 106.3MB in the beginning and 115.9MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:37:13,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.86ms. Allocated memory is still 140.5MB. Free memory was 115.9MB in the beginning and 114.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:37:13,897 INFO L158 Benchmark]: Boogie Preprocessor took 39.84ms. Allocated memory is still 140.5MB. Free memory was 114.1MB in the beginning and 113.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:37:13,905 INFO L158 Benchmark]: RCFGBuilder took 277.46ms. Allocated memory is still 140.5MB. Free memory was 113.0MB in the beginning and 102.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 13:37:13,905 INFO L158 Benchmark]: TraceAbstraction took 342.47ms. Allocated memory is still 140.5MB. Free memory was 102.5MB in the beginning and 87.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-19 13:37:13,906 INFO L158 Benchmark]: Witness Printer took 3.39ms. Allocated memory is still 140.5MB. Free memory was 87.0MB in the beginning and 87.0MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:37:13,913 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 83.9MB. Free memory was 53.4MB in the beginning and 53.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.42ms. Allocated memory is still 140.5MB. Free memory was 106.3MB in the beginning and 115.9MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.86ms. Allocated memory is still 140.5MB. Free memory was 115.9MB in the beginning and 114.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.84ms. Allocated memory is still 140.5MB. Free memory was 114.1MB in the beginning and 113.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 277.46ms. Allocated memory is still 140.5MB. Free memory was 113.0MB in the beginning and 102.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 342.47ms. Allocated memory is still 140.5MB. Free memory was 102.5MB in the beginning and 87.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.39ms. Allocated memory is still 140.5MB. Free memory was 87.0MB in the beginning and 87.0MB in the end (delta: 2.6kB). 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: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51. Possible FailurePath: [L23] double E, E0, E1, S0, S1, S; [L24] int i; [L26] E = __VERIFIER_nondet_double() [L27] E0 = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L16] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(E >= 0. && E <= 1.) [L29] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L16] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L29] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) [L31] S0 = 0 [L32] S = 0 [L34] i = 0 VAL [i=0] [L34] COND TRUE i <= 1000000 [L36] E1 = E0 [L37] E0 = E [L39] E = __VERIFIER_nondet_double() [L40] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L16] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=50, E=51, E=49, i=0] [L42] COND TRUE __VERIFIER_nondet_int() [L43] E1 = E [L44] E0 = E [L45] S0 = E [L46] S = E VAL [E=50, E=50, E=50, i=0, S=50, S0=50] [L49] S1 = S0 [L50] S0 = S [L51] S = 0.7*E - E0*1.3 + E1*1.1 + S0*1.4 - S1*0.7 [L53] CALL __VERIFIER_assert(S >= -4. && S <= 4.) [L18] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 3, 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=23occurred 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, 24 NumberOfCodeBlocks, 24 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 [2022-07-19 13:37:13,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/filter2_reinit.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 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:37:15,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:37:15,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:37:15,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:37:15,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:37:15,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:37:15,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:37:15,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:37:15,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:37:15,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:37:15,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:37:15,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:37:15,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:37:15,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:37:15,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:37:15,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:37:15,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:37:15,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:37:15,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:37:15,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:37:15,861 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:37:15,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:37:15,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:37:15,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:37:15,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:37:15,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:37:15,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:37:15,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:37:15,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:37:15,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:37:15,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:37:15,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:37:15,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:37:15,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:37:15,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:37:15,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:37:15,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:37:15,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:37:15,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:37:15,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:37:15,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:37:15,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:37:15,885 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:37:15,920 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:37:15,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:37:15,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:37:15,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:37:15,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:37:15,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:37:15,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:37:15,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:37:15,923 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:37:15,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:37:15,924 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:37:15,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:37:15,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:37:15,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:37:15,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:37:15,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:37:15,925 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:37:15,925 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:37:15,926 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:37:15,926 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:37:15,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:37:15,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:37:15,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:37:15,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:37:15,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:37:15,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:37:15,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:37:15,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:37:15,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:37:15,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:37:15,928 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:37:15,928 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:37:15,928 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:37:15,928 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:37:15,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:37:15,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:37:15,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 [2022-07-19 13:37:16,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:37:16,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:37:16,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:37:16,229 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:37:16,229 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:37:16,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2_reinit.c [2022-07-19 13:37:16,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d86e87ac0/4d59576d4ca14bab87a2aacb8ce062d3/FLAG6dfe266d1 [2022-07-19 13:37:16,696 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:37:16,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_reinit.c [2022-07-19 13:37:16,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d86e87ac0/4d59576d4ca14bab87a2aacb8ce062d3/FLAG6dfe266d1 [2022-07-19 13:37:16,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d86e87ac0/4d59576d4ca14bab87a2aacb8ce062d3 [2022-07-19 13:37:16,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:37:16,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:37:16,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:37:16,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:37:16,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:37:16,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:37:16" (1/1) ... [2022-07-19 13:37:16,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350f892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16, skipping insertion in model container [2022-07-19 13:37:16,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:37:16" (1/1) ... [2022-07-19 13:37:16,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:37:16,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:37:16,903 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/filter2_reinit.c[700,713] [2022-07-19 13:37:16,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:37:16,942 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:37:16,961 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/filter2_reinit.c[700,713] [2022-07-19 13:37:16,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:37:16,992 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:37:16,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16 WrapperNode [2022-07-19 13:37:16,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:37:16,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:37:16,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:37:16,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:37:17,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16" (1/1) ... [2022-07-19 13:37:17,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16" (1/1) ... [2022-07-19 13:37:17,035 INFO L137 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2022-07-19 13:37:17,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:37:17,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:37:17,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:37:17,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:37:17,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16" (1/1) ... [2022-07-19 13:37:17,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16" (1/1) ... [2022-07-19 13:37:17,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16" (1/1) ... [2022-07-19 13:37:17,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16" (1/1) ... [2022-07-19 13:37:17,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16" (1/1) ... [2022-07-19 13:37:17,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16" (1/1) ... [2022-07-19 13:37:17,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16" (1/1) ... [2022-07-19 13:37:17,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:37:17,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:37:17,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:37:17,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:37:17,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16" (1/1) ... [2022-07-19 13:37:17,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:37:17,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:37:17,121 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) [2022-07-19 13:37:17,125 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 [2022-07-19 13:37:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:37:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:37:17,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 13:37:17,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 13:37:17,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:37:17,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:37:17,224 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:37:17,226 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:37:19,565 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:37:19,570 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:37:19,570 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 13:37:19,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:37:19 BoogieIcfgContainer [2022-07-19 13:37:19,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:37:19,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:37:19,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:37:19,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:37:19,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:37:16" (1/3) ... [2022-07-19 13:37:19,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53085063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:37:19, skipping insertion in model container [2022-07-19 13:37:19,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:37:16" (2/3) ... [2022-07-19 13:37:19,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53085063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:37:19, skipping insertion in model container [2022-07-19 13:37:19,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:37:19" (3/3) ... [2022-07-19 13:37:19,582 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2022-07-19 13:37:19,602 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:37:19,602 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:37:19,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:37:19,668 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@73c6d346, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e57d1d9 [2022-07-19 13:37:19,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:37:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 13:37:19,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-19 13:37:19,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:37:19,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:37:19,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:37:19,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:37:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash 526466326, now seen corresponding path program 1 times [2022-07-19 13:37:19,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:37:19,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535067753] [2022-07-19 13:37:19,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:37:19,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:37:19,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:37:19,703 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) [2022-07-19 13:37:19,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:37:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:37:20,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 13:37:20,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:37:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 13:37:20,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:37:20,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:37:20,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535067753] [2022-07-19 13:37:20,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535067753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:37:20,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:37:20,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:37:20,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815648301] [2022-07-19 13:37:20,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:37:20,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:37:20,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:37:20,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:37:20,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:37:20,990 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 13:37:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:37:21,009 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2022-07-19 13:37:21,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:37:21,011 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-07-19 13:37:21,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:37:21,017 INFO L225 Difference]: With dead ends: 41 [2022-07-19 13:37:21,017 INFO L226 Difference]: Without dead ends: 18 [2022-07-19 13:37:21,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:37:21,023 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:37:21,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:37:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-19 13:37:21,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-19 13:37:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 13:37:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-07-19 13:37:21,049 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 23 [2022-07-19 13:37:21,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:37:21,050 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-07-19 13:37:21,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 13:37:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-07-19 13:37:21,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-19 13:37:21,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:37:21,052 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:37:21,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 13:37:21,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:37:21,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:37:21,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:37:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash -398587304, now seen corresponding path program 1 times [2022-07-19 13:37:21,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:37:21,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143028381] [2022-07-19 13:37:21,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:37:21,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:37:21,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:37:21,266 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) [2022-07-19 13:37:21,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 13:38:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:38:15,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-19 13:38:15,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:39:40,419 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~S0~0#1| (_ FloatingPoint 11 53))) (and (let ((.cse2 (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main_~S0~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| .cse4)))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (let ((.cse0 (fp.leq .cse2 .cse3)) (.cse1 (fp.geq .cse2 (fp.neg .cse3)))) (or (and (or (not .cse0) (not .cse1)) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (and .cse0 .cse1 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)))))) (fp.leq |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.geq |ULTIMATE.start_main_~S0~0#1| (_ +zero 11 53)))) is different from false [2022-07-19 13:39:42,477 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~S0~0#1| (_ FloatingPoint 11 53))) (and (let ((.cse2 (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main_~S0~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| .cse4)))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (let ((.cse0 (fp.leq .cse2 .cse3)) (.cse1 (fp.geq .cse2 (fp.neg .cse3)))) (or (and (or (not .cse0) (not .cse1)) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (and .cse0 .cse1 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)))))) (fp.leq |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.geq |ULTIMATE.start_main_~S0~0#1| (_ +zero 11 53)))) is different from true [2022-07-19 13:40:32,944 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~S0~0#1| (_ FloatingPoint 11 53))) (and (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main_~S0~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| .cse2)))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (or (not (fp.leq .cse0 .cse1)) (not (fp.geq .cse0 (fp.neg .cse1))))) (fp.leq |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.geq |ULTIMATE.start_main_~S0~0#1| (_ +zero 11 53)))) is different from false [2022-07-19 13:40:35,004 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~S0~0#1| (_ FloatingPoint 11 53))) (and (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main_~S0~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~S0~0#1| .cse2)))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (or (not (fp.leq .cse0 .cse1)) (not (fp.geq .cse0 (fp.neg .cse1))))) (fp.leq |ULTIMATE.start_main_~S0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.geq |ULTIMATE.start_main_~S0~0#1| (_ +zero 11 53)))) is different from true [2022-07-19 13:40:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 13:40:35,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:40:35,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:40:35,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143028381] [2022-07-19 13:40:35,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143028381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:40:35,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:40:35,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 13:40:35,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916822006] [2022-07-19 13:40:35,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:40:35,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 13:40:35,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:40:35,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 13:40:35,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=26, Unknown=4, NotChecked=22, Total=72 [2022-07-19 13:40:35,008 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 13:40:38,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 13:40:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:40:38,294 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-07-19 13:40:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 13:40:38,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-07-19 13:40:38,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:40:38,297 INFO L225 Difference]: With dead ends: 30 [2022-07-19 13:40:38,297 INFO L226 Difference]: Without dead ends: 28 [2022-07-19 13:40:38,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=25, Invalid=35, Unknown=4, NotChecked=26, Total=90 [2022-07-19 13:40:38,299 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 13:40:38,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 1 Unknown, 40 Unchecked, 3.2s Time] [2022-07-19 13:40:38,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-19 13:40:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-07-19 13:40:38,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 13:40:38,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-07-19 13:40:38,307 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2022-07-19 13:40:38,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:40:38,308 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-07-19 13:40:38,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 13:40:38,309 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-07-19 13:40:38,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-19 13:40:38,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:40:38,310 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:40:38,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-19 13:40:38,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:40:38,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:40:38,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:40:38,515 INFO L85 PathProgramCache]: Analyzing trace with hash -398527722, now seen corresponding path program 1 times [2022-07-19 13:40:38,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:40:38,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131277148] [2022-07-19 13:40:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:40:38,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:40:38,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:40:38,517 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) [2022-07-19 13:40:38,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 13:40:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:40:47,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-19 13:40:47,092 INFO L286 TraceCheckSpWp]: Computing forward predicates...