./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.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-scaling/freire2_unwindbound50.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 4eead35b52b146e528d3235895e151889bbf52901c3f6d3c5a144d0412f9f4ac --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:59:24,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:59:24,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:59:24,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:59:24,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:59:24,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:59:24,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:59:24,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:59:24,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:59:24,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:59:24,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:59:24,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:59:24,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:59:24,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:59:24,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:59:24,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:59:24,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:59:24,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:59:24,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:59:24,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:59:24,218 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:59:24,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:59:24,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:59:24,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:59:24,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:59:24,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:59:24,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:59:24,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:59:24,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:59:24,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:59:24,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:59:24,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:59:24,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:59:24,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:59:24,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:59:24,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:59:24,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:59:24,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:59:24,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:59:24,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:59:24,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:59:24,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:59:24,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 15:59:24,265 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:59:24,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:59:24,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:59:24,266 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:59:24,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:59:24,267 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:59:24,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:59:24,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:59:24,268 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:59:24,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:59:24,269 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:59:24,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 15:59:24,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:59:24,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:59:24,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:59:24,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:59:24,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:59:24,270 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:59:24,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:59:24,272 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:59:24,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:59:24,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:59:24,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:59:24,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:59:24,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:59:24,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:59:24,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:59:24,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:59:24,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 15:59:24,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 15:59:24,274 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:59:24,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:59:24,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:59:24,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eead35b52b146e528d3235895e151889bbf52901c3f6d3c5a144d0412f9f4ac [2022-07-19 15:59:24,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:59:24,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:59:24,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:59:24,549 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:59:24,549 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:59:24,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c [2022-07-19 15:59:24,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666b6baff/7c828d97b441476b810a2a04706b04c6/FLAGc8f52624f [2022-07-19 15:59:25,041 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:59:25,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c [2022-07-19 15:59:25,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666b6baff/7c828d97b441476b810a2a04706b04c6/FLAGc8f52624f [2022-07-19 15:59:25,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666b6baff/7c828d97b441476b810a2a04706b04c6 [2022-07-19 15:59:25,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:59:25,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:59:25,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:59:25,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:59:25,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:59:25,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:59:25" (1/1) ... [2022-07-19 15:59:25,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e22d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25, skipping insertion in model container [2022-07-19 15:59:25,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:59:25" (1/1) ... [2022-07-19 15:59:25,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:59:25,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:59:25,614 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-scaling/freire2_unwindbound50.c[709,722] [2022-07-19 15:59:25,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:59:25,639 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:59:25,649 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-scaling/freire2_unwindbound50.c[709,722] [2022-07-19 15:59:25,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:59:25,686 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:59:25,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25 WrapperNode [2022-07-19 15:59:25,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:59:25,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:59:25,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:59:25,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:59:25,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25" (1/1) ... [2022-07-19 15:59:25,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25" (1/1) ... [2022-07-19 15:59:25,732 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2022-07-19 15:59:25,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:59:25,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:59:25,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:59:25,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:59:25,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25" (1/1) ... [2022-07-19 15:59:25,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25" (1/1) ... [2022-07-19 15:59:25,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25" (1/1) ... [2022-07-19 15:59:25,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25" (1/1) ... [2022-07-19 15:59:25,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25" (1/1) ... [2022-07-19 15:59:25,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25" (1/1) ... [2022-07-19 15:59:25,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25" (1/1) ... [2022-07-19 15:59:25,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:59:25,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:59:25,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:59:25,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:59:25,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25" (1/1) ... [2022-07-19 15:59:25,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:59:25,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:59:25,809 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 15:59:25,831 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 15:59:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:59:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 15:59:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:59:25,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:59:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 15:59:25,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 15:59:25,906 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:59:25,908 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:59:26,053 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:59:26,058 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:59:26,058 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 15:59:26,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:59:26 BoogieIcfgContainer [2022-07-19 15:59:26,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:59:26,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:59:26,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:59:26,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:59:26,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:59:25" (1/3) ... [2022-07-19 15:59:26,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f73f2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:59:26, skipping insertion in model container [2022-07-19 15:59:26,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:25" (2/3) ... [2022-07-19 15:59:26,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f73f2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:59:26, skipping insertion in model container [2022-07-19 15:59:26,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:59:26" (3/3) ... [2022-07-19 15:59:26,087 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound50.c [2022-07-19 15:59:26,112 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:59:26,113 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:59:26,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:59:26,185 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@580f55fd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f69fbf9 [2022-07-19 15:59:26,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:59:26,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 15:59:26,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 15:59:26,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:59:26,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:59:26,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:59:26,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:59:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1821846948, now seen corresponding path program 1 times [2022-07-19 15:59:26,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:59:26,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048991300] [2022-07-19 15:59:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:59:26,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:59:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:59:26,346 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 15:59:26,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:59:26,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048991300] [2022-07-19 15:59:26,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048991300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:59:26,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:59:26,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 15:59:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460985781] [2022-07-19 15:59:26,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:59:26,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 15:59:26,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:59:26,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 15:59:26,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:59:26,385 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 15:59:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:59:26,425 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2022-07-19 15:59:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 15:59:26,427 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 15:59:26,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:59:26,435 INFO L225 Difference]: With dead ends: 40 [2022-07-19 15:59:26,435 INFO L226 Difference]: Without dead ends: 17 [2022-07-19 15:59:26,443 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 15:59:26,448 INFO L413 NwaCegarLoop]: 27 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, 27 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 15:59:26,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:59:26,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-19 15:59:26,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-19 15:59:26,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 15:59:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2022-07-19 15:59:26,496 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 7 [2022-07-19 15:59:26,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:59:26,497 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-07-19 15:59:26,498 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 15:59:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2022-07-19 15:59:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 15:59:26,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:59:26,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:59:26,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 15:59:26,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:59:26,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:59:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash 178653015, now seen corresponding path program 1 times [2022-07-19 15:59:26,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:59:26,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385153706] [2022-07-19 15:59:26,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:59:26,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:59:26,529 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:59:26,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875440640] [2022-07-19 15:59:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:59:26,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:59:26,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:59:26,535 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 15:59:26,551 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 15:59:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:59:26,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 15:59:26,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:59:26,671 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 15:59:26,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:59:26,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:59:26,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385153706] [2022-07-19 15:59:26,673 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:59:26,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875440640] [2022-07-19 15:59:26,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875440640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:59:26,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:59:26,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 15:59:26,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760054754] [2022-07-19 15:59:26,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:59:26,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 15:59:26,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:59:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 15:59:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 15:59:26,683 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 15:59:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:59:26,711 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-07-19 15:59:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 15:59:26,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2022-07-19 15:59:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:59:26,712 INFO L225 Difference]: With dead ends: 28 [2022-07-19 15:59:26,713 INFO L226 Difference]: Without dead ends: 19 [2022-07-19 15:59:26,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 15:59:26,717 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:59:26,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:59:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-19 15:59:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-19 15:59:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 15:59:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-07-19 15:59:26,731 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 8 [2022-07-19 15:59:26,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:59:26,732 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-07-19 15:59:26,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 15:59:26,734 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-07-19 15:59:26,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 15:59:26,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:59:26,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:59:26,763 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 15:59:26,952 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 15:59:26,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:59:26,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:59:26,953 INFO L85 PathProgramCache]: Analyzing trace with hash 180321311, now seen corresponding path program 1 times [2022-07-19 15:59:26,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:59:26,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541903008] [2022-07-19 15:59:26,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:59:26,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:59:26,964 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:59:26,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010941577] [2022-07-19 15:59:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:59:26,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:59:26,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:59:26,970 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:59:26,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 15:59:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 15:59:27,006 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 15:59:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 15:59:27,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 15:59:27,026 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 15:59:27,027 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 15:59:27,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 15:59:27,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-19 15:59:27,238 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-19 15:59:27,241 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 15:59:27,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 03:59:27 BoogieIcfgContainer [2022-07-19 15:59:27,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 15:59:27,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 15:59:27,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 15:59:27,258 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 15:59:27,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:59:26" (3/4) ... [2022-07-19 15:59:27,261 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 15:59:27,262 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 15:59:27,262 INFO L158 Benchmark]: Toolchain (without parser) took 1814.78ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 66.4MB in the beginning and 86.0MB in the end (delta: -19.6MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-19 15:59:27,263 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 96.5MB. Free memory was 52.5MB in the beginning and 52.5MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:59:27,263 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.39ms. Allocated memory is still 96.5MB. Free memory was 66.1MB in the beginning and 72.6MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 15:59:27,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.77ms. Allocated memory is still 96.5MB. Free memory was 72.2MB in the beginning and 70.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:59:27,264 INFO L158 Benchmark]: Boogie Preprocessor took 35.11ms. Allocated memory is still 96.5MB. Free memory was 70.8MB in the beginning and 69.8MB in the end (delta: 961.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:59:27,264 INFO L158 Benchmark]: RCFGBuilder took 290.28ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 60.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 15:59:27,265 INFO L158 Benchmark]: TraceAbstraction took 1196.26ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 59.3MB in the beginning and 86.6MB in the end (delta: -27.3MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-07-19 15:59:27,265 INFO L158 Benchmark]: Witness Printer took 3.62ms. Allocated memory is still 127.9MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:59:27,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 96.5MB. Free memory was 52.5MB in the beginning and 52.5MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.39ms. Allocated memory is still 96.5MB. Free memory was 66.1MB in the beginning and 72.6MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.77ms. Allocated memory is still 96.5MB. Free memory was 72.2MB in the beginning and 70.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.11ms. Allocated memory is still 96.5MB. Free memory was 70.8MB in the beginning and 69.8MB in the end (delta: 961.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 290.28ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 60.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1196.26ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 59.3MB in the beginning and 86.6MB in the end (delta: -27.3MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Witness Printer took 3.62ms. Allocated memory is still 127.9MB. Free memory is still 86.0MB. 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 34. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [a=2, counter=0, r=1, s=13/4, x=2] [L33] EXPR counter++ VAL [a=2, counter=1, counter++=0, r=1, s=13/4, x=2] [L33] COND TRUE counter++<50 [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 48 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 15:59:27,315 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-scaling/freire2_unwindbound50.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 4eead35b52b146e528d3235895e151889bbf52901c3f6d3c5a144d0412f9f4ac --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:59:29,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:59:29,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:59:29,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:59:29,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:59:29,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:59:29,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:59:29,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:59:29,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:59:29,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:59:29,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:59:29,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:59:29,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:59:29,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:59:29,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:59:29,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:59:29,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:59:29,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:59:29,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:59:29,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:59:29,372 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:59:29,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:59:29,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:59:29,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:59:29,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:59:29,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:59:29,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:59:29,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:59:29,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:59:29,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:59:29,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:59:29,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:59:29,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:59:29,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:59:29,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:59:29,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:59:29,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:59:29,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:59:29,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:59:29,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:59:29,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:59:29,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:59:29,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 15:59:29,420 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:59:29,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:59:29,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:59:29,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:59:29,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:59:29,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:59:29,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:59:29,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:59:29,422 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:59:29,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:59:29,423 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:59:29,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:59:29,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:59:29,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:59:29,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:59:29,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:59:29,424 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 15:59:29,424 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 15:59:29,425 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 15:59:29,425 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:59:29,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:59:29,425 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:59:29,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:59:29,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:59:29,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:59:29,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:59:29,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:59:29,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:59:29,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:59:29,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:59:29,427 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 15:59:29,427 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 15:59:29,427 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:59:29,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:59:29,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:59:29,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 15:59:29,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eead35b52b146e528d3235895e151889bbf52901c3f6d3c5a144d0412f9f4ac [2022-07-19 15:59:29,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:59:29,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:59:29,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:59:29,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:59:29,784 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:59:29,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c [2022-07-19 15:59:29,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40edf23ff/dd280e1ea2e44b2faf894936e51e513a/FLAGf69a75003 [2022-07-19 15:59:30,285 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:59:30,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c [2022-07-19 15:59:30,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40edf23ff/dd280e1ea2e44b2faf894936e51e513a/FLAGf69a75003 [2022-07-19 15:59:30,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40edf23ff/dd280e1ea2e44b2faf894936e51e513a [2022-07-19 15:59:30,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:59:30,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:59:30,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:59:30,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:59:30,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:59:30,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:59:30" (1/1) ... [2022-07-19 15:59:30,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e1e21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30, skipping insertion in model container [2022-07-19 15:59:30,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:59:30" (1/1) ... [2022-07-19 15:59:30,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:59:30,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:59:30,445 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-scaling/freire2_unwindbound50.c[709,722] [2022-07-19 15:59:30,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:59:30,527 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:59:30,537 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-scaling/freire2_unwindbound50.c[709,722] [2022-07-19 15:59:30,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:59:30,578 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:59:30,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30 WrapperNode [2022-07-19 15:59:30,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:59:30,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:59:30,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:59:30,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:59:30,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30" (1/1) ... [2022-07-19 15:59:30,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30" (1/1) ... [2022-07-19 15:59:30,625 INFO L137 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-07-19 15:59:30,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:59:30,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:59:30,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:59:30,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:59:30,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30" (1/1) ... [2022-07-19 15:59:30,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30" (1/1) ... [2022-07-19 15:59:30,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30" (1/1) ... [2022-07-19 15:59:30,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30" (1/1) ... [2022-07-19 15:59:30,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30" (1/1) ... [2022-07-19 15:59:30,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30" (1/1) ... [2022-07-19 15:59:30,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30" (1/1) ... [2022-07-19 15:59:30,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:59:30,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:59:30,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:59:30,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:59:30,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30" (1/1) ... [2022-07-19 15:59:30,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:59:30,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:59:30,704 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 15:59:30,727 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 15:59:30,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:59:30,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 15:59:30,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:59:30,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:59:30,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 15:59:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 15:59:30,817 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:59:30,818 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:59:33,120 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:59:33,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:59:33,126 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 15:59:33,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:59:33 BoogieIcfgContainer [2022-07-19 15:59:33,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:59:33,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:59:33,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:59:33,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:59:33,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:59:30" (1/3) ... [2022-07-19 15:59:33,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3dd604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:59:33, skipping insertion in model container [2022-07-19 15:59:33,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:59:30" (2/3) ... [2022-07-19 15:59:33,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3dd604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:59:33, skipping insertion in model container [2022-07-19 15:59:33,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:59:33" (3/3) ... [2022-07-19 15:59:33,134 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound50.c [2022-07-19 15:59:33,156 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:59:33,156 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:59:33,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:59:33,210 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@5afc0fed, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70612459 [2022-07-19 15:59:33,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:59:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 15:59:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 15:59:33,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:59:33,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:59:33,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:59:33,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:59:33,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1821846948, now seen corresponding path program 1 times [2022-07-19 15:59:33,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 15:59:33,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083713166] [2022-07-19 15:59:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:59:33,245 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 15:59:33,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 15:59:33,251 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 15:59:33,287 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 15:59:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:59:33,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 15:59:33,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:59:33,433 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 15:59:33,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:59:33,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 15:59:33,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083713166] [2022-07-19 15:59:33,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083713166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:59:33,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:59:33,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 15:59:33,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924671101] [2022-07-19 15:59:33,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:59:33,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 15:59:33,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 15:59:33,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 15:59:33,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:59:33,475 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 15:59:33,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:59:33,496 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2022-07-19 15:59:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 15:59:33,498 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 15:59:33,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:59:33,505 INFO L225 Difference]: With dead ends: 40 [2022-07-19 15:59:33,506 INFO L226 Difference]: Without dead ends: 17 [2022-07-19 15:59:33,510 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 15:59:33,513 INFO L413 NwaCegarLoop]: 27 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, 27 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 15:59:33,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:59:33,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-19 15:59:33,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-19 15:59:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 15:59:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2022-07-19 15:59:33,555 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 7 [2022-07-19 15:59:33,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:59:33,555 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-07-19 15:59:33,556 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 15:59:33,556 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2022-07-19 15:59:33,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 15:59:33,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:59:33,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:59:33,578 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 15:59:33,771 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 15:59:33,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:59:33,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:59:33,772 INFO L85 PathProgramCache]: Analyzing trace with hash 178653015, now seen corresponding path program 1 times [2022-07-19 15:59:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 15:59:33,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701690810] [2022-07-19 15:59:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:59:33,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 15:59:33,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 15:59:33,776 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 15:59:33,778 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 15:59:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:59:33,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 15:59:33,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:59:33,944 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 15:59:33,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:59:33,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 15:59:33,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701690810] [2022-07-19 15:59:33,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701690810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:59:33,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:59:33,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 15:59:33,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628795115] [2022-07-19 15:59:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:59:33,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 15:59:33,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 15:59:33,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 15:59:33,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 15:59:33,961 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 15:59:33,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:59:33,990 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-07-19 15:59:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 15:59:33,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2022-07-19 15:59:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:59:33,991 INFO L225 Difference]: With dead ends: 28 [2022-07-19 15:59:33,992 INFO L226 Difference]: Without dead ends: 19 [2022-07-19 15:59:33,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 15:59:33,993 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:59:33,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:59:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-19 15:59:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-19 15:59:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 15:59:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-07-19 15:59:33,999 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 8 [2022-07-19 15:59:33,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:59:34,000 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-07-19 15:59:34,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 15:59:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-07-19 15:59:34,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 15:59:34,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:59:34,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:59:34,014 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 15:59:34,211 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 15:59:34,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:59:34,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:59:34,212 INFO L85 PathProgramCache]: Analyzing trace with hash 180321311, now seen corresponding path program 1 times [2022-07-19 15:59:34,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 15:59:34,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407775751] [2022-07-19 15:59:34,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:59:34,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 15:59:34,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 15:59:34,215 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 15:59:34,216 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 15:59:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:59:34,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 15:59:34,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:59:34,468 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 15:59:34,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:59:34,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 15:59:34,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407775751] [2022-07-19 15:59:34,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407775751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:59:34,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:59:34,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 15:59:34,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078882993] [2022-07-19 15:59:34,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:59:34,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 15:59:34,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 15:59:34,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 15:59:34,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:59:34,470 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 15:59:36,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:59:39,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:59:41,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:59:43,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:59:47,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:59:49,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:59:49,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:59:49,903 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-07-19 15:59:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 15:59:50,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2022-07-19 15:59:50,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:59:50,034 INFO L225 Difference]: With dead ends: 33 [2022-07-19 15:59:50,034 INFO L226 Difference]: Without dead ends: 31 [2022-07-19 15:59:50,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 15:59:50,036 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-07-19 15:59:50,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 74 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 15.4s Time] [2022-07-19 15:59:50,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-19 15:59:50,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-07-19 15:59:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-19 15:59:50,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-07-19 15:59:50,046 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 8 [2022-07-19 15:59:50,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:59:50,046 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-07-19 15:59:50,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 15:59:50,046 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-07-19 15:59:50,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-19 15:59:50,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:59:50,047 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:59:50,063 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 15:59:50,260 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 15:59:50,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:59:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:59:50,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1242689983, now seen corresponding path program 1 times [2022-07-19 15:59:50,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 15:59:50,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537268678] [2022-07-19 15:59:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:59:50,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 15:59:50,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 15:59:50,264 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 15:59:50,266 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 15:59:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:59:51,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 15:59:51,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:59:54,062 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 15:59:54,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 16:00:00,384 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 16:00:02,424 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 16:00:28,454 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 16:00:28,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 16:00:28,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537268678] [2022-07-19 16:00:28,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537268678] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 16:00:28,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:00:28,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-07-19 16:00:28,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686793171] [2022-07-19 16:00:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:00:28,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:00:28,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 16:00:28,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:00:28,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=56, Unknown=2, NotChecked=14, Total=90 [2022-07-19 16:00:28,457 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 16:00:31,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 16:00:35,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 16:00:37,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 16:00:37,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:00:37,436 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-07-19 16:00:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:00:37,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 13 [2022-07-19 16:00:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:00:37,570 INFO L225 Difference]: With dead ends: 31 [2022-07-19 16:00:37,570 INFO L226 Difference]: Without dead ends: 29 [2022-07-19 16:00:37,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=22, Invalid=70, Unknown=2, NotChecked=16, Total=110 [2022-07-19 16:00:37,571 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:00:37,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 62 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 3 Unknown, 32 Unchecked, 7.9s Time] [2022-07-19 16:00:37,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-19 16:00:37,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-07-19 16:00:37,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-19 16:00:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-07-19 16:00:37,580 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 13 [2022-07-19 16:00:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:00:37,580 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-07-19 16:00:37,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 16:00:37,580 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-07-19 16:00:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 16:00:37,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:00:37,581 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:00:37,603 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 16:00:37,797 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 16:00:37,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:00:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:00:37,798 INFO L85 PathProgramCache]: Analyzing trace with hash 892115231, now seen corresponding path program 1 times [2022-07-19 16:00:37,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 16:00:37,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135183293] [2022-07-19 16:00:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:00:37,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 16:00:37,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 16:00:37,800 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 16:00:37,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-19 16:00:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 16:00:39,464 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 16:00:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 16:00:41,746 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-19 16:00:41,747 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 16:00:41,747 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 16:00:41,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-19 16:00:41,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 16:00:41,952 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-19 16:00:41,957 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 16:00:41,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 04:00:41 BoogieIcfgContainer [2022-07-19 16:00:41,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 16:00:41,983 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 16:00:41,983 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 16:00:41,983 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 16:00:41,984 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:59:33" (3/4) ... [2022-07-19 16:00:41,986 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 16:00:42,026 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 16:00:42,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 16:00:42,029 INFO L158 Benchmark]: Toolchain (without parser) took 71719.65ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 38.1MB in the beginning and 41.4MB in the end (delta: -3.3MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-07-19 16:00:42,029 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 40.5MB in the beginning and 40.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 16:00:42,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.48ms. Allocated memory is still 58.7MB. Free memory was 37.9MB in the beginning and 41.1MB in the end (delta: -3.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 16:00:42,030 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.27ms. Allocated memory is still 58.7MB. Free memory was 41.1MB in the beginning and 39.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 16:00:42,030 INFO L158 Benchmark]: Boogie Preprocessor took 45.83ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 38.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 16:00:42,031 INFO L158 Benchmark]: RCFGBuilder took 2454.61ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 28.0MB in the end (delta: 10.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 16:00:42,031 INFO L158 Benchmark]: TraceAbstraction took 68852.50ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 27.5MB in the beginning and 43.5MB in the end (delta: -16.0MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2022-07-19 16:00:42,031 INFO L158 Benchmark]: Witness Printer took 45.47ms. Allocated memory is still 75.5MB. Free memory was 43.5MB in the beginning and 41.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 16:00:42,034 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 40.5MB in the beginning and 40.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.48ms. Allocated memory is still 58.7MB. Free memory was 37.9MB in the beginning and 41.1MB in the end (delta: -3.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.27ms. Allocated memory is still 58.7MB. Free memory was 41.1MB in the beginning and 39.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.83ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 38.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2454.61ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 28.0MB in the end (delta: 10.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 68852.50ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 27.5MB in the beginning and 43.5MB in the end (delta: -16.0MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * Witness Printer took 45.47ms. Allocated memory is still 75.5MB. Free memory was 43.5MB in the beginning and 41.4MB 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: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [a=0.02522786458333341, counter=0, r=1, s=3.25, x=0.02522786458333341] [L33] EXPR counter++ VAL [a=0.02522786458333341, counter=1, counter++=0, r=1, s=3.25, x=0.02522786458333341] [L33] COND TRUE counter++<50 [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=1, counter=1] [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [a=0.02522786458333341, counter=1, r=1, s=3.25, x=0.02522786458333341] [L35] CALL __VERIFIER_assert(((4*r*r*r - 6*r*r + 3*r) + (int)(4*x - 4*a)) == 1) VAL [\old(cond)=1, counter=1] [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(((4*r*r*r - 6*r*r + 3*r) + (int)(4*x - 4*a)) == 1) VAL [a=0.02522786458333341, counter=1, r=1, s=3.25, x=0.02522786458333341] [L36] CALL __VERIFIER_assert((int)(8*r*s - 24*a + 16*r - 12*s + 24*x - 3 == 0)) VAL [\old(cond)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.8s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 24.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 23.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 222 SdHoareTripleChecker+Invalid, 22.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 32 IncrementalHoareTripleChecker+Unchecked, 135 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 87 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 18.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, InterpolantAutomatonStates: 19, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 37.6s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 309 SizeOfPredicates, 5 NumberOfNonLiveVariables, 117 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 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 16:00:42,262 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-07-19 16:00:42,272 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