./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_Newton-1.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/inv_Newton-1.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 7c5bb845798e00aa3572bfadf1cd4653d0b05182832339d0260ef999baa89392 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:41:40,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:41:40,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:41:40,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:41:40,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:41:40,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:41:40,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:41:40,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:41:40,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:41:40,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:41:40,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:41:40,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:41:40,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:41:40,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:41:40,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:41:40,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:41:40,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:41:40,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:41:40,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:41:40,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:41:40,148 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:41:40,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:41:40,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:41:40,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:41:40,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:41:40,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:41:40,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:41:40,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:41:40,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:41:40,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:41:40,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:41:40,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:41:40,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:41:40,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:41:40,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:41:40,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:41:40,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:41:40,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:41:40,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:41:40,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:41:40,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:41:40,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:41:40,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:41:40,181 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:41:40,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:41:40,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:41:40,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:41:40,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:41:40,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:41:40,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:41:40,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:41:40,184 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:41:40,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:41:40,185 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:41:40,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:41:40,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:41:40,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:41:40,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:41:40,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:41:40,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:41:40,186 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:41:40,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:41:40,186 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:41:40,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:41:40,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:41:40,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:41:40,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:41:40,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:41:40,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:41:40,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:41:40,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:41:40,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:41:40,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:41:40,187 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:41:40,188 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:41:40,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:41:40,188 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c5bb845798e00aa3572bfadf1cd4653d0b05182832339d0260ef999baa89392 [2022-07-19 13:41:40,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:41:40,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:41:40,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:41:40,384 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:41:40,391 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:41:40,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_Newton-1.c [2022-07-19 13:41:40,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5751d24e7/d4462006d85a4b988e190c62e807a93d/FLAG31d0c8aff [2022-07-19 13:41:40,737 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:41:40,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_Newton-1.c [2022-07-19 13:41:40,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5751d24e7/d4462006d85a4b988e190c62e807a93d/FLAG31d0c8aff [2022-07-19 13:41:41,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5751d24e7/d4462006d85a4b988e190c62e807a93d [2022-07-19 13:41:41,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:41:41,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:41:41,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:41:41,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:41:41,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:41:41,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:41:41" (1/1) ... [2022-07-19 13:41:41,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4552b3d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41, skipping insertion in model container [2022-07-19 13:41:41,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:41:41" (1/1) ... [2022-07-19 13:41:41,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:41:41,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:41:41,314 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/inv_Newton-1.c[598,611] [2022-07-19 13:41:41,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:41:41,330 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:41:41,337 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/inv_Newton-1.c[598,611] [2022-07-19 13:41:41,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:41:41,365 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:41:41,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41 WrapperNode [2022-07-19 13:41:41,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:41:41,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:41:41,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:41:41,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:41:41,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41" (1/1) ... [2022-07-19 13:41:41,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41" (1/1) ... [2022-07-19 13:41:41,401 INFO L137 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2022-07-19 13:41:41,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:41:41,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:41:41,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:41:41,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:41:41,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41" (1/1) ... [2022-07-19 13:41:41,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41" (1/1) ... [2022-07-19 13:41:41,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41" (1/1) ... [2022-07-19 13:41:41,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41" (1/1) ... [2022-07-19 13:41:41,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41" (1/1) ... [2022-07-19 13:41:41,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41" (1/1) ... [2022-07-19 13:41:41,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41" (1/1) ... [2022-07-19 13:41:41,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:41:41,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:41:41,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:41:41,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:41:41,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41" (1/1) ... [2022-07-19 13:41:41,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:41:41,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:41:41,456 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 13:41:41,475 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 13:41:41,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:41:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:41:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 13:41:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-19 13:41:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 13:41:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-19 13:41:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:41:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:41:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 13:41:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 13:41:41,550 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:41:41,551 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:41:41,655 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:41:41,668 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:41:41,669 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 13:41:41,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:41:41 BoogieIcfgContainer [2022-07-19 13:41:41,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:41:41,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:41:41,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:41:41,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:41:41,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:41:41" (1/3) ... [2022-07-19 13:41:41,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a66ddbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:41:41, skipping insertion in model container [2022-07-19 13:41:41,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:41" (2/3) ... [2022-07-19 13:41:41,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a66ddbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:41:41, skipping insertion in model container [2022-07-19 13:41:41,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:41:41" (3/3) ... [2022-07-19 13:41:41,683 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton-1.c [2022-07-19 13:41:41,692 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:41:41,699 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:41:41,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:41:41,749 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@210191c3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7529a106 [2022-07-19 13:41:41,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:41:41,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 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) [2022-07-19 13:41:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 13:41:41,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:41:41,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:41:41,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:41:41,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:41:41,772 INFO L85 PathProgramCache]: Analyzing trace with hash -590190995, now seen corresponding path program 1 times [2022-07-19 13:41:41,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:41:41,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346411022] [2022-07-19 13:41:41,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:41:41,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:41:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:41:41,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:41:41,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:41:41,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346411022] [2022-07-19 13:41:41,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346411022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:41:41,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:41:41,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:41:41,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545564688] [2022-07-19 13:41:41,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:41:41,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:41:41,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:41:41,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:41:41,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:41:41,891 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-19 13:41:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:41:41,899 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-07-19 13:41:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:41:41,901 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-07-19 13:41:41,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:41:41,905 INFO L225 Difference]: With dead ends: 25 [2022-07-19 13:41:41,905 INFO L226 Difference]: Without dead ends: 10 [2022-07-19 13:41:41,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:41:41,909 INFO L413 NwaCegarLoop]: 14 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, 14 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 13:41:41,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:41:41,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-19 13:41:41,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-19 13:41:41,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-07-19 13:41:41,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-19 13:41:41,928 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2022-07-19 13:41:41,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:41:41,928 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-19 13:41:41,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-19 13:41:41,928 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-19 13:41:41,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 13:41:41,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:41:41,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:41:41,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:41:41,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:41:41,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:41:41,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1184816367, now seen corresponding path program 1 times [2022-07-19 13:41:41,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:41:41,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433081704] [2022-07-19 13:41:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:41:41,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:41:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:41:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:41:42,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:41:42,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433081704] [2022-07-19 13:41:42,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433081704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:41:42,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:41:42,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:41:42,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609322782] [2022-07-19 13:41:42,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:41:42,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:41:42,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:41:42,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:41:42,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:41:42,019 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-07-19 13:41:42,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:41:42,027 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-07-19 13:41:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:41:42,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-07-19 13:41:42,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:41:42,028 INFO L225 Difference]: With dead ends: 16 [2022-07-19 13:41:42,028 INFO L226 Difference]: Without dead ends: 11 [2022-07-19 13:41:42,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:41:42,030 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:41:42,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:41:42,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-19 13:41:42,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-19 13:41:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-07-19 13:41:42,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-07-19 13:41:42,034 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2022-07-19 13:41:42,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:41:42,036 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-07-19 13:41:42,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-07-19 13:41:42,037 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-07-19 13:41:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-19 13:41:42,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:41:42,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:41:42,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 13:41:42,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:41:42,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:41:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1873743609, now seen corresponding path program 1 times [2022-07-19 13:41:42,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:41:42,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038811175] [2022-07-19 13:41:42,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:41:42,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:41:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:41:42,096 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:41:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:41:42,168 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:41:42,168 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:41:42,169 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:41:42,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 13:41:42,174 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-19 13:41:42,177 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:41:42,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:41:42 BoogieIcfgContainer [2022-07-19 13:41:42,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:41:42,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:41:42,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:41:42,196 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:41:42,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:41:41" (3/4) ... [2022-07-19 13:41:42,198 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:41:42,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:41:42,198 INFO L158 Benchmark]: Toolchain (without parser) took 1019.05ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 62.3MB in the beginning and 93.0MB in the end (delta: -30.8MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-07-19 13:41:42,199 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:41:42,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.73ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 62.1MB in the beginning and 106.2MB in the end (delta: -44.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:41:42,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.70ms. Allocated memory is still 130.0MB. Free memory was 106.2MB in the beginning and 104.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:41:42,200 INFO L158 Benchmark]: Boogie Preprocessor took 15.77ms. Allocated memory is still 130.0MB. Free memory was 104.5MB in the beginning and 102.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:41:42,200 INFO L158 Benchmark]: RCFGBuilder took 249.10ms. Allocated memory is still 130.0MB. Free memory was 102.9MB in the beginning and 91.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 13:41:42,201 INFO L158 Benchmark]: TraceAbstraction took 523.40ms. Allocated memory is still 130.0MB. Free memory was 91.4MB in the beginning and 93.7MB in the end (delta: -2.3MB). Peak memory consumption was 428.2kB. Max. memory is 16.1GB. [2022-07-19 13:41:42,201 INFO L158 Benchmark]: Witness Printer took 2.61ms. Allocated memory is still 130.0MB. Free memory was 93.7MB in the beginning and 93.0MB in the end (delta: 678.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:41:42,203 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 90.2MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.73ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 62.1MB in the beginning and 106.2MB in the end (delta: -44.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.70ms. Allocated memory is still 130.0MB. Free memory was 106.2MB in the beginning and 104.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.77ms. Allocated memory is still 130.0MB. Free memory was 104.5MB in the beginning and 102.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 249.10ms. Allocated memory is still 130.0MB. Free memory was 102.9MB in the beginning and 91.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 523.40ms. Allocated memory is still 130.0MB. Free memory was 91.4MB in the beginning and 93.7MB in the end (delta: -2.3MB). Peak memory consumption was 428.2kB. Max. memory is 16.1GB. * Witness Printer took 2.61ms. Allocated memory is still 130.0MB. Free memory was 93.7MB in the beginning and 93.0MB in the end (delta: 678.6kB). 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: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 31. Possible FailurePath: [L46] double a,r; [L48] a = __VERIFIER_nondet_double() [L49] CALL assume_abort_if_not(a >= 20. && a <= 30.) [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L49] RET assume_abort_if_not(a >= 20. && a <= 30.) [L51] CALL, EXPR inv(a) [L26] double xi, xsi, temp; [L27] signed int cond, exp; [L28] union double_int A_u, xi_u; [L29] A_u.d = A [L30] EXPR A_u.i [L30] exp = (signed int) ((A_u.i & 0x7FF0000000000000) >> 52) - 1023 [L31] xi_u.d = 1 [L32] xi_u.i = (((long long)(1023-exp)) << 52) [L33] EXPR xi_u.d [L33] xi = xi_u.d [L34] cond = 1 VAL [\old(A)=9214364837600034821, A=9214364837600034821, A_u={4:0}, cond=1, exp=-1023, xi=9214364837600034820, xi_u={5:0}] [L35] COND TRUE \read(cond) [L36] xsi = 2*xi-A*xi*xi [L37] temp = xsi-xi [L38] cond = ((temp > 1e-10) || (temp < -1e-10)) [L39] xi = xsi VAL [\old(A)=9214364837600034821, A=9214364837600034821, A_u={4:0}, cond=0, exp=-1023, xi=9214364837600034817, xi_u={5:0}, xsi=9214364837600034817] [L35] COND FALSE !(\read(cond)) VAL [\old(A)=9214364837600034821, A=9214364837600034821, A_u={4:0}, cond=0, exp=-1023, xi=9214364837600034817, xi_u={5:0}, xsi=9214364837600034817] [L41] return xi; [L41] return xi; [L41] return xi; VAL [\old(A)=9214364837600034821, \result=9214364837600034817, A=9214364837600034821, cond=0, exp=-1023, xi=9214364837600034817, xsi=9214364837600034817] [L51] RET, EXPR inv(a) [L51] r = inv(a) [L53] CALL __VERIFIER_assert(r >= 0 && r <= 0.06) [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 23 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 13:41:42,242 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/inv_Newton-1.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 7c5bb845798e00aa3572bfadf1cd4653d0b05182832339d0260ef999baa89392 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:41:43,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:41:43,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:41:43,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:41:43,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:41:43,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:41:43,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:41:43,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:41:43,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:41:43,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:41:43,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:41:43,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:41:43,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:41:43,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:41:43,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:41:43,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:41:43,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:41:43,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:41:43,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:41:43,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:41:43,868 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:41:43,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:41:43,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:41:43,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:41:43,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:41:43,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:41:43,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:41:43,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:41:43,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:41:43,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:41:43,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:41:43,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:41:43,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:41:43,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:41:43,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:41:43,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:41:43,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:41:43,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:41:43,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:41:43,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:41:43,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:41:43,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:41:43,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:41:43,908 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:41:43,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:41:43,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:41:43,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:41:43,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:41:43,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:41:43,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:41:43,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:41:43,910 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:41:43,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:41:43,911 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:41:43,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:41:43,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:41:43,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:41:43,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:41:43,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:41:43,913 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:41:43,913 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:41:43,913 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:41:43,913 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:41:43,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:41:43,913 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:41:43,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:41:43,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:41:43,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:41:43,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:41:43,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:41:43,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:41:43,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:41:43,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:41:43,915 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:41:43,915 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:41:43,915 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:41:43,916 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:41:43,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:41:43,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:41:43,916 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c5bb845798e00aa3572bfadf1cd4653d0b05182832339d0260ef999baa89392 [2022-07-19 13:41:44,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:41:44,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:41:44,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:41:44,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:41:44,200 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:41:44,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_Newton-1.c [2022-07-19 13:41:44,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27ff124ff/9faa4f1d82cd471ca42383ce7a126fd5/FLAG2c0618e9e [2022-07-19 13:41:44,525 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:41:44,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_Newton-1.c [2022-07-19 13:41:44,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27ff124ff/9faa4f1d82cd471ca42383ce7a126fd5/FLAG2c0618e9e [2022-07-19 13:41:44,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27ff124ff/9faa4f1d82cd471ca42383ce7a126fd5 [2022-07-19 13:41:44,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:41:44,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:41:44,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:41:44,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:41:44,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:41:44,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:41:44" (1/1) ... [2022-07-19 13:41:44,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6abdf98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:44, skipping insertion in model container [2022-07-19 13:41:44,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:41:44" (1/1) ... [2022-07-19 13:41:44,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:41:44,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:41:45,084 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/inv_Newton-1.c[598,611] [2022-07-19 13:41:45,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:41:45,109 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:41:45,120 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/inv_Newton-1.c[598,611] [2022-07-19 13:41:45,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:41:45,182 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:41:45,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:45 WrapperNode [2022-07-19 13:41:45,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:41:45,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:41:45,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:41:45,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:41:45,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:45" (1/1) ... [2022-07-19 13:41:45,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:45" (1/1) ... [2022-07-19 13:41:45,218 INFO L137 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2022-07-19 13:41:45,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:41:45,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:41:45,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:41:45,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:41:45,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:45" (1/1) ... [2022-07-19 13:41:45,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:45" (1/1) ... [2022-07-19 13:41:45,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:45" (1/1) ... [2022-07-19 13:41:45,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:45" (1/1) ... [2022-07-19 13:41:45,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:45" (1/1) ... [2022-07-19 13:41:45,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:45" (1/1) ... [2022-07-19 13:41:45,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:45" (1/1) ... [2022-07-19 13:41:45,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:41:45,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:41:45,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:41:45,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:41:45,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:45" (1/1) ... [2022-07-19 13:41:45,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:41:45,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:41:45,297 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 13:41:45,307 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 13:41:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:41:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-07-19 13:41:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-07-19 13:41:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:41:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 13:41:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-19 13:41:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:41:45,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:41:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-19 13:41:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 13:41:45,399 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:41:45,400 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:41:47,649 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:41:47,653 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:41:47,653 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 13:41:47,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:41:47 BoogieIcfgContainer [2022-07-19 13:41:47,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:41:47,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:41:47,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:41:47,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:41:47,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:41:44" (1/3) ... [2022-07-19 13:41:47,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcd8396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:41:47, skipping insertion in model container [2022-07-19 13:41:47,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:41:45" (2/3) ... [2022-07-19 13:41:47,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcd8396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:41:47, skipping insertion in model container [2022-07-19 13:41:47,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:41:47" (3/3) ... [2022-07-19 13:41:47,664 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton-1.c [2022-07-19 13:41:47,673 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:41:47,674 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:41:47,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:41:47,705 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@20bd91fa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6bf48bdc [2022-07-19 13:41:47,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:41:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 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) [2022-07-19 13:41:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 13:41:47,711 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:41:47,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:41:47,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:41:47,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:41:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash -590190995, now seen corresponding path program 1 times [2022-07-19 13:41:47,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:41:47,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455028145] [2022-07-19 13:41:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:41:47,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:41:47,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:41:47,728 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 13:41:47,729 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 13:41:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:41:47,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 13:41:47,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:41:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:41:47,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:41:47,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:41:47,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455028145] [2022-07-19 13:41:47,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455028145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:41:47,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:41:47,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:41:47,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861187040] [2022-07-19 13:41:47,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:41:47,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:41:47,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:41:47,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:41:47,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:41:47,897 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-19 13:41:47,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:41:47,907 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-07-19 13:41:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:41:47,910 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-07-19 13:41:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:41:47,916 INFO L225 Difference]: With dead ends: 25 [2022-07-19 13:41:47,916 INFO L226 Difference]: Without dead ends: 10 [2022-07-19 13:41:47,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:41:47,922 INFO L413 NwaCegarLoop]: 14 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, 14 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 13:41:47,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:41:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-19 13:41:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-19 13:41:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-07-19 13:41:47,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-19 13:41:47,947 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2022-07-19 13:41:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:41:47,948 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-19 13:41:47,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-19 13:41:47,948 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-19 13:41:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 13:41:47,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:41:47,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:41:47,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 13:41:48,161 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 13:41:48,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:41:48,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:41:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1184816367, now seen corresponding path program 1 times [2022-07-19 13:41:48,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:41:48,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711951383] [2022-07-19 13:41:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:41:48,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:41:48,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:41:48,165 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 13:41:48,166 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 13:41:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:41:48,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 13:41:48,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:41:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:41:48,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:41:48,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:41:48,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711951383] [2022-07-19 13:41:48,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711951383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:41:48,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:41:48,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:41:48,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324717652] [2022-07-19 13:41:48,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:41:48,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:41:48,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:41:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:41:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:41:48,275 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-07-19 13:41:50,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 13:41:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:41:50,575 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-07-19 13:41:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:41:50,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-07-19 13:41:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:41:50,575 INFO L225 Difference]: With dead ends: 16 [2022-07-19 13:41:50,575 INFO L226 Difference]: Without dead ends: 11 [2022-07-19 13:41:50,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:41:50,577 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 13:41:50,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 13:41:50,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-19 13:41:50,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-19 13:41:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-07-19 13:41:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-07-19 13:41:50,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2022-07-19 13:41:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:41:50,579 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-07-19 13:41:50,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-07-19 13:41:50,579 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-07-19 13:41:50,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-19 13:41:50,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:41:50,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:41:50,588 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 13:41:50,788 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 13:41:50,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:41:50,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:41:50,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1873743609, now seen corresponding path program 1 times [2022-07-19 13:41:50,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:41:50,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836379187] [2022-07-19 13:41:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:41:50,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:41:50,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:41:50,791 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 13:41:50,792 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 13:41:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:41:51,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-19 13:41:51,784 INFO L286 TraceCheckSpWp]: Computing forward predicates...