./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/freire2.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/nla-digbench/freire2.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 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:26:25,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:26:25,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:26:25,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:26:25,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:26:25,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:26:25,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:26:25,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:26:25,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:26:25,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:26:25,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:26:25,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:26:25,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:26:25,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:26:25,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:26:25,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:26:25,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:26:25,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:26:25,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:26:25,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:26:25,186 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:26:25,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:26:25,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:26:25,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:26:25,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:26:25,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:26:25,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:26:25,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:26:25,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:26:25,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:26:25,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:26:25,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:26:25,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:26:25,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:26:25,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:26:25,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:26:25,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:26:25,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:26:25,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:26:25,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:26:25,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:26:25,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:26:25,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 15:26:25,231 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:26:25,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:26:25,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:26:25,232 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:26:25,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:26:25,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:26:25,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:26:25,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:26:25,234 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:26:25,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:26:25,235 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:26:25,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 15:26:25,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:26:25,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:26:25,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:26:25,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:26:25,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:26:25,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:26:25,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:26:25,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:26:25,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:26:25,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:26:25,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:26:25,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:26:25,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:26:25,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:26:25,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:26:25,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:26:25,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 15:26:25,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 15:26:25,238 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:26:25,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:26:25,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:26:25,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf [2022-07-19 15:26:25,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:26:25,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:26:25,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:26:25,452 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:26:25,452 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:26:25,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2022-07-19 15:26:25,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616179d26/b64859438a9e4092af1c84a3c6a03e0f/FLAG4baa8e4f0 [2022-07-19 15:26:25,859 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:26:25,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2022-07-19 15:26:25,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616179d26/b64859438a9e4092af1c84a3c6a03e0f/FLAG4baa8e4f0 [2022-07-19 15:26:25,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616179d26/b64859438a9e4092af1c84a3c6a03e0f [2022-07-19 15:26:25,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:26:25,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:26:25,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:26:25,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:26:25,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:26:25,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:26:25" (1/1) ... [2022-07-19 15:26:25,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e28697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:25, skipping insertion in model container [2022-07-19 15:26:25,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:26:25" (1/1) ... [2022-07-19 15:26:25,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:26:25,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:26:26,077 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2022-07-19 15:26:26,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:26:26,098 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:26:26,108 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2022-07-19 15:26:26,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:26:26,133 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:26:26,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:26 WrapperNode [2022-07-19 15:26:26,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:26:26,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:26:26,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:26:26,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:26:26,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:26" (1/1) ... [2022-07-19 15:26:26,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:26" (1/1) ... [2022-07-19 15:26:26,167 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-07-19 15:26:26,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:26:26,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:26:26,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:26:26,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:26:26,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:26" (1/1) ... [2022-07-19 15:26:26,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:26" (1/1) ... [2022-07-19 15:26:26,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:26" (1/1) ... [2022-07-19 15:26:26,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:26" (1/1) ... [2022-07-19 15:26:26,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:26" (1/1) ... [2022-07-19 15:26:26,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:26" (1/1) ... [2022-07-19 15:26:26,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:26" (1/1) ... [2022-07-19 15:26:26,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:26:26,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:26:26,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:26:26,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:26:26,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:26" (1/1) ... [2022-07-19 15:26:26,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:26:26,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:26:26,221 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 15:26:26,223 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 15:26:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:26:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 15:26:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:26:26,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:26:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 15:26:26,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 15:26:26,297 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:26:26,299 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:26:26,410 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:26:26,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:26:26,415 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 15:26:26,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:26:26 BoogieIcfgContainer [2022-07-19 15:26:26,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:26:26,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:26:26,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:26:26,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:26:26,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:26:25" (1/3) ... [2022-07-19 15:26:26,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e533445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:26:26, skipping insertion in model container [2022-07-19 15:26:26,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:26" (2/3) ... [2022-07-19 15:26:26,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e533445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:26:26, skipping insertion in model container [2022-07-19 15:26:26,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:26:26" (3/3) ... [2022-07-19 15:26:26,422 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c [2022-07-19 15:26:26,432 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:26:26,432 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:26:26,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:26:26,501 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@2f1cb09e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3baa8606 [2022-07-19 15:26:26,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:26:26,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 15:26:26,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 15:26:26,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:26:26,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:26:26,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:26:26,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:26:26,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1820892643, now seen corresponding path program 1 times [2022-07-19 15:26:26,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:26:26,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651039844] [2022-07-19 15:26:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:26:26,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:26:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:26:26,634 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 15:26:26,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:26:26,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651039844] [2022-07-19 15:26:26,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651039844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:26:26,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:26:26,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 15:26:26,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989325918] [2022-07-19 15:26:26,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:26:26,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 15:26:26,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:26:26,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 15:26:26,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:26:26,674 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:26:26,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:26:26,694 INFO L93 Difference]: Finished difference Result 38 states and 60 transitions. [2022-07-19 15:26:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 15:26:26,708 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 15:26:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:26:26,714 INFO L225 Difference]: With dead ends: 38 [2022-07-19 15:26:26,714 INFO L226 Difference]: Without dead ends: 16 [2022-07-19 15:26:26,717 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 15:26:26,721 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:26:26,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:26:26,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-19 15:26:26,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-07-19 15:26:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 15:26:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2022-07-19 15:26:26,752 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 7 [2022-07-19 15:26:26,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:26:26,752 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-07-19 15:26:26,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:26:26,753 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2022-07-19 15:26:26,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 15:26:26,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:26:26,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:26:26,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 15:26:26,754 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:26:26,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:26:26,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1811478687, now seen corresponding path program 1 times [2022-07-19 15:26:26,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:26:26,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471744329] [2022-07-19 15:26:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:26:26,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:26:26,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:26:26,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241628443] [2022-07-19 15:26:26,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:26:26,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:26:26,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:26:26,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:26:26,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 15:26:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 15:26:26,839 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 15:26:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 15:26:26,870 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 15:26:26,871 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 15:26:26,872 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 15:26:26,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 15:26:27,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:26:27,103 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 15:26:27,106 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 15:26:27,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 03:26:27 BoogieIcfgContainer [2022-07-19 15:26:27,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 15:26:27,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 15:26:27,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 15:26:27,125 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 15:26:27,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:26:26" (3/4) ... [2022-07-19 15:26:27,128 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 15:26:27,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 15:26:27,130 INFO L158 Benchmark]: Toolchain (without parser) took 1243.89ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 38.0MB in the beginning and 69.1MB in the end (delta: -31.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:26:27,130 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 75.5MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:26:27,131 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.20ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 37.8MB in the beginning and 67.3MB in the end (delta: -29.5MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-07-19 15:26:27,132 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.89ms. Allocated memory is still 92.3MB. Free memory was 67.3MB in the beginning and 65.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:26:27,133 INFO L158 Benchmark]: Boogie Preprocessor took 21.28ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 64.6MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 15:26:27,133 INFO L158 Benchmark]: RCFGBuilder took 226.19ms. Allocated memory is still 92.3MB. Free memory was 64.6MB in the beginning and 55.2MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 15:26:27,133 INFO L158 Benchmark]: TraceAbstraction took 706.66ms. Allocated memory is still 92.3MB. Free memory was 54.9MB in the beginning and 69.5MB in the end (delta: -14.6MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2022-07-19 15:26:27,134 INFO L158 Benchmark]: Witness Printer took 4.75ms. Allocated memory is still 92.3MB. Free memory was 69.5MB in the beginning and 69.1MB in the end (delta: 401.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:26:27,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 75.5MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.20ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 37.8MB in the beginning and 67.3MB in the end (delta: -29.5MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.89ms. Allocated memory is still 92.3MB. Free memory was 67.3MB in the beginning and 65.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.28ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 64.6MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 226.19ms. Allocated memory is still 92.3MB. Free memory was 64.6MB in the beginning and 55.2MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 706.66ms. Allocated memory is still 92.3MB. Free memory was 54.9MB in the beginning and 69.5MB in the end (delta: -14.6MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Witness Printer took 4.75ms. Allocated memory is still 92.3MB. Free memory was 69.5MB in the beginning and 69.1MB in the end (delta: 401.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 VAL [a=2, r=1, s=13/4, x=2] [L32] COND TRUE 1 VAL [a=2, r=1, s=13/4, x=2] [L33] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, 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, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 25 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 15:26:27,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/freire2.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 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:26:28,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:26:28,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:26:28,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:26:28,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:26:28,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:26:28,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:26:28,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:26:28,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:26:28,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:26:28,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:26:28,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:26:28,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:26:28,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:26:28,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:26:28,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:26:28,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:26:28,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:26:28,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:26:28,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:26:28,927 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:26:28,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:26:28,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:26:28,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:26:28,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:26:28,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:26:28,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:26:28,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:26:28,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:26:28,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:26:28,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:26:28,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:26:28,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:26:28,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:26:28,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:26:28,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:26:28,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:26:28,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:26:28,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:26:28,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:26:28,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:26:28,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:26:28,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 15:26:28,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:26:28,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:26:28,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:26:28,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:26:28,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:26:28,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:26:28,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:26:28,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:26:28,980 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:26:28,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:26:28,981 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:26:28,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:26:28,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:26:28,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:26:28,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:26:28,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:26:28,990 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 15:26:28,990 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 15:26:28,990 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 15:26:28,990 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:26:28,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:26:28,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:26:28,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:26:28,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:26:28,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:26:28,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:26:28,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:26:28,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:26:28,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:26:28,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:26:28,992 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 15:26:28,992 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 15:26:28,992 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:26:28,993 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:26:28,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:26:28,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 15:26:28,993 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf [2022-07-19 15:26:29,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:26:29,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:26:29,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:26:29,267 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:26:29,267 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:26:29,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2022-07-19 15:26:29,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d4de622a/07d4fdc189bf4b27bfa381282d3b4d3f/FLAGf8f615ce9 [2022-07-19 15:26:29,710 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:26:29,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2022-07-19 15:26:29,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d4de622a/07d4fdc189bf4b27bfa381282d3b4d3f/FLAGf8f615ce9 [2022-07-19 15:26:29,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d4de622a/07d4fdc189bf4b27bfa381282d3b4d3f [2022-07-19 15:26:29,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:26:29,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:26:29,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:26:29,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:26:29,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:26:29,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:26:29" (1/1) ... [2022-07-19 15:26:29,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c18099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:29, skipping insertion in model container [2022-07-19 15:26:29,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:26:29" (1/1) ... [2022-07-19 15:26:29,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:26:29,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:26:29,888 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2022-07-19 15:26:29,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:26:29,954 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:26:29,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2022-07-19 15:26:29,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:26:30,013 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:26:30,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:30 WrapperNode [2022-07-19 15:26:30,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:26:30,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:26:30,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:26:30,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:26:30,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:30" (1/1) ... [2022-07-19 15:26:30,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:30" (1/1) ... [2022-07-19 15:26:30,071 INFO L137 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2022-07-19 15:26:30,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:26:30,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:26:30,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:26:30,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:26:30,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:30" (1/1) ... [2022-07-19 15:26:30,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:30" (1/1) ... [2022-07-19 15:26:30,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:30" (1/1) ... [2022-07-19 15:26:30,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:30" (1/1) ... [2022-07-19 15:26:30,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:30" (1/1) ... [2022-07-19 15:26:30,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:30" (1/1) ... [2022-07-19 15:26:30,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:30" (1/1) ... [2022-07-19 15:26:30,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:26:30,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:26:30,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:26:30,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:26:30,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:30" (1/1) ... [2022-07-19 15:26:30,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:26:30,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:26:30,127 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 15:26:30,130 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 15:26:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:26:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 15:26:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:26:30,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:26:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 15:26:30,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 15:26:30,246 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:26:30,248 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:26:32,542 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:26:32,557 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:26:32,557 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 15:26:32,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:26:32 BoogieIcfgContainer [2022-07-19 15:26:32,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:26:32,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:26:32,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:26:32,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:26:32,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:26:29" (1/3) ... [2022-07-19 15:26:32,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb328e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:26:32, skipping insertion in model container [2022-07-19 15:26:32,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:26:30" (2/3) ... [2022-07-19 15:26:32,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb328e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:26:32, skipping insertion in model container [2022-07-19 15:26:32,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:26:32" (3/3) ... [2022-07-19 15:26:32,565 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c [2022-07-19 15:26:32,576 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:26:32,579 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:26:32,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:26:32,616 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@5251dab6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1bd51672 [2022-07-19 15:26:32,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:26:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 15:26:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 15:26:32,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:26:32,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:26:32,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:26:32,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:26:32,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1820892643, now seen corresponding path program 1 times [2022-07-19 15:26:32,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 15:26:32,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141959230] [2022-07-19 15:26:32,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:26:32,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 15:26:32,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 15:26:32,661 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 15:26:32,662 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 15:26:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:26:32,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 15:26:32,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:26:32,790 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 15:26:32,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:26:32,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 15:26:32,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141959230] [2022-07-19 15:26:32,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141959230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:26:32,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:26:32,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 15:26:32,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872811340] [2022-07-19 15:26:32,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:26:32,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 15:26:32,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 15:26:32,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 15:26:32,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:26:32,832 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:26:32,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:26:32,849 INFO L93 Difference]: Finished difference Result 38 states and 60 transitions. [2022-07-19 15:26:32,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 15:26:32,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 15:26:32,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:26:32,856 INFO L225 Difference]: With dead ends: 38 [2022-07-19 15:26:32,857 INFO L226 Difference]: Without dead ends: 16 [2022-07-19 15:26:32,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:26:32,863 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:26:32,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:26:32,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-19 15:26:32,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-07-19 15:26:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 15:26:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2022-07-19 15:26:32,894 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 7 [2022-07-19 15:26:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:26:32,894 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-07-19 15:26:32,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:26:32,895 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2022-07-19 15:26:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 15:26:32,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:26:32,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:26:32,911 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 15:26:33,108 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 15:26:33,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:26:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:26:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1811478687, now seen corresponding path program 1 times [2022-07-19 15:26:33,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 15:26:33,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540506966] [2022-07-19 15:26:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:26:33,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 15:26:33,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 15:26:33,114 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 15:26:33,116 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 15:26:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:26:33,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 15:26:33,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:26:33,425 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 15:26:33,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:26:33,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 15:26:33,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540506966] [2022-07-19 15:26:33,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540506966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:26:33,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:26:33,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 15:26:33,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805224790] [2022-07-19 15:26:33,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:26:33,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 15:26:33,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 15:26:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 15:26:33,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:26:33,429 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:26:36,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:26:38,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:26:40,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:26:42,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:26:44,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:26:46,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:26:51,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:26:52,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:26:55,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:26:57,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:26:59,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:27:01,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:27:03,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:27:05,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:27:08,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:27:10,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:27:12,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:27:15,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:27:17,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:27:17,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:27:17,340 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2022-07-19 15:27:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 15:27:17,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 15:27:17,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:27:17,392 INFO L225 Difference]: With dead ends: 38 [2022-07-19 15:27:17,392 INFO L226 Difference]: Without dead ends: 36 [2022-07-19 15:27:17,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-19 15:27:17,393 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.8s IncrementalHoareTripleChecker+Time [2022-07-19 15:27:17,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 85 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 17 Unknown, 0 Unchecked, 43.8s Time] [2022-07-19 15:27:17,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-19 15:27:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2022-07-19 15:27:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-19 15:27:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2022-07-19 15:27:17,427 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 7 [2022-07-19 15:27:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:27:17,427 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2022-07-19 15:27:17,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:27:17,428 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2022-07-19 15:27:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-19 15:27:17,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:27:17,428 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:27:17,440 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 15:27:17,629 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 15:27:17,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:27:17,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:27:17,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1549807104, now seen corresponding path program 1 times [2022-07-19 15:27:17,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 15:27:17,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782240403] [2022-07-19 15:27:17,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:27:17,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 15:27:17,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 15:27:17,632 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 15:27:17,634 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 15:27:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:27:18,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 15:27:18,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:27:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:27:20,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:27:26,342 WARN L833 $PredicateComparison]: unable to prove that (= (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~r~0#1|) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32)) is different from false [2022-07-19 15:27:28,385 WARN L855 $PredicateComparison]: unable to prove that (= (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~r~0#1|) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32)) is different from true [2022-07-19 15:27:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:27:48,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 15:27:48,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782240403] [2022-07-19 15:27:48,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782240403] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 15:27:48,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 15:27:48,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-07-19 15:27:48,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386354194] [2022-07-19 15:27:48,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:27:48,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 15:27:48,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 15:27:48,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 15:27:48,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=56, Unknown=2, NotChecked=14, Total=90 [2022-07-19 15:27:48,666 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 15:27:51,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:27:55,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:27:57,356 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:27:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:27:57,357 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-07-19 15:27:57,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 15:27:57,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-07-19 15:27:57,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:27:57,481 INFO L225 Difference]: With dead ends: 40 [2022-07-19 15:27:57,481 INFO L226 Difference]: Without dead ends: 38 [2022-07-19 15:27:57,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=22, Invalid=70, Unknown=2, NotChecked=16, Total=110 [2022-07-19 15:27:57,483 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-19 15:27:57,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 3 Unknown, 30 Unchecked, 7.8s Time] [2022-07-19 15:27:57,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-19 15:27:57,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-07-19 15:27:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 20 states have (on average 1.2) internal successors, (24), 23 states have internal predecessors, (24), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-19 15:27:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2022-07-19 15:27:57,491 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 12 [2022-07-19 15:27:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:27:57,491 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2022-07-19 15:27:57,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 15:27:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2022-07-19 15:27:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-19 15:27:57,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:27:57,492 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:27:57,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-19 15:27:57,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 15:27:57,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:27:57,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:27:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash 888915199, now seen corresponding path program 1 times [2022-07-19 15:27:57,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 15:27:57,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080142954] [2022-07-19 15:27:57,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:27:57,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 15:27:57,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 15:27:57,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 15:27:57,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-19 15:28:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 15:28:03,173 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 15:28:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 15:28:04,915 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-19 15:28:04,916 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 15:28:04,916 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 15:28:04,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-19 15:28:05,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 15:28:05,121 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-19 15:28:05,123 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 15:28:05,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 03:28:05 BoogieIcfgContainer [2022-07-19 15:28:05,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 15:28:05,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 15:28:05,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 15:28:05,158 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 15:28:05,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:26:32" (3/4) ... [2022-07-19 15:28:05,175 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 15:28:05,204 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 15:28:05,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 15:28:05,205 INFO L158 Benchmark]: Toolchain (without parser) took 95472.04ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 43.4MB in the beginning and 43.0MB in the end (delta: 402.8kB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2022-07-19 15:28:05,205 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 44.8MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:28:05,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.34ms. Allocated memory is still 62.9MB. Free memory was 43.2MB in the beginning and 44.6MB in the end (delta: -1.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 15:28:05,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.57ms. Allocated memory is still 62.9MB. Free memory was 44.6MB in the beginning and 43.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:28:05,206 INFO L158 Benchmark]: Boogie Preprocessor took 22.85ms. Allocated memory is still 62.9MB. Free memory was 43.0MB in the beginning and 41.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:28:05,206 INFO L158 Benchmark]: RCFGBuilder took 2463.41ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 31.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 15:28:05,206 INFO L158 Benchmark]: TraceAbstraction took 92597.25ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 31.2MB in the beginning and 45.2MB in the end (delta: -14.0MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2022-07-19 15:28:05,207 INFO L158 Benchmark]: Witness Printer took 46.29ms. Allocated memory is still 88.1MB. Free memory was 45.2MB in the beginning and 43.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:28:05,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 44.8MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.34ms. Allocated memory is still 62.9MB. Free memory was 43.2MB in the beginning and 44.6MB in the end (delta: -1.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.57ms. Allocated memory is still 62.9MB. Free memory was 44.6MB in the beginning and 43.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.85ms. Allocated memory is still 62.9MB. Free memory was 43.0MB in the beginning and 41.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2463.41ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 31.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 92597.25ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 31.2MB in the beginning and 45.2MB in the end (delta: -14.0MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * Witness Printer took 46.29ms. Allocated memory is still 88.1MB. Free memory was 45.2MB in the beginning and 43.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 VAL [a=0.0000003970511275277969, r=1, s=3.25, x=0.0000003970511275277969] [L32] COND TRUE 1 VAL [a=0.0000003970511275277969, r=1, s=3.25, x=0.0000003970511275277969] [L33] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=1] [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L33] RET __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [a=0.0000003970511275277969, r=1, s=3.25, x=0.0000003970511275277969] [L34] CALL __VERIFIER_assert(((4*r*r*r - 6*r*r + 3*r) + (int)(4*x - 4*a)) == 1) VAL [\old(cond)=1] [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L34] RET __VERIFIER_assert(((4*r*r*r - 6*r*r + 3*r) + (int)(4*x - 4*a)) == 1) VAL [a=0.0000003970511275277969, r=1, s=3.25, x=0.0000003970511275277969] [L35] CALL __VERIFIER_assert((int)(8*r*s - 24*a + 16*r - 12*s + 24*x - 3 == 0)) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 92.5s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 52.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 51.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 168 SdHoareTripleChecker+Invalid, 50.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 30 IncrementalHoareTripleChecker+Unchecked, 103 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 65 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=3, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 30.5s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 1 QuantifiedInterpolants, 239 SizeOfPredicates, 5 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-19 15:28:05,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE