./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 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/freire1_unwindbound10.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 6733f5cb9fc343de68240fd800b3186de8da0c1fcb51c576de9d571eaa34d1a7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 20:50:13,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 20:50:13,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 20:50:13,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 20:50:13,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 20:50:13,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 20:50:13,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 20:50:13,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 20:50:13,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 20:50:13,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 20:50:13,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 20:50:13,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 20:50:13,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 20:50:13,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 20:50:13,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 20:50:13,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 20:50:13,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 20:50:13,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 20:50:13,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 20:50:13,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 20:50:13,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 20:50:13,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 20:50:13,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 20:50:13,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 20:50:13,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 20:50:13,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 20:50:13,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 20:50:13,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 20:50:13,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 20:50:13,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 20:50:13,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 20:50:13,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 20:50:13,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 20:50:13,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 20:50:13,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 20:50:13,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 20:50:13,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 20:50:13,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 20:50:13,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 20:50:13,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 20:50:13,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 20:50:13,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 20:50:13,732 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 20:50:13,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 20:50:13,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 20:50:13,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 20:50:13,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 20:50:13,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 20:50:13,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 20:50:13,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 20:50:13,736 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 20:50:13,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 20:50:13,737 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 20:50:13,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 20:50:13,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 20:50:13,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 20:50:13,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 20:50:13,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 20:50:13,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 20:50:13,738 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 20:50:13,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 20:50:13,738 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 20:50:13,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 20:50:13,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 20:50:13,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 20:50:13,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 20:50:13,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:50:13,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 20:50:13,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 20:50:13,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 20:50:13,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 20:50:13,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 20:50:13,740 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 20:50:13,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 20:50:13,741 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 20:50:13,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 20:50:13,741 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 20:50:13,741 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6733f5cb9fc343de68240fd800b3186de8da0c1fcb51c576de9d571eaa34d1a7 [2023-02-15 20:50:13,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 20:50:13,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 20:50:13,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 20:50:13,916 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 20:50:13,917 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 20:50:13,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c [2023-02-15 20:50:14,916 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 20:50:15,038 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 20:50:15,038 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c [2023-02-15 20:50:15,042 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97081e46d/32030048525d48d7b38e9e900adcf152/FLAG8d1cc87d1 [2023-02-15 20:50:15,059 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97081e46d/32030048525d48d7b38e9e900adcf152 [2023-02-15 20:50:15,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 20:50:15,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 20:50:15,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 20:50:15,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 20:50:15,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 20:50:15,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@94f4108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15, skipping insertion in model container [2023-02-15 20:50:15,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 20:50:15,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 20:50:15,193 WARN L237 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/freire1_unwindbound10.c[712,725] [2023-02-15 20:50:15,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:50:15,213 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 20:50:15,221 WARN L237 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/freire1_unwindbound10.c[712,725] [2023-02-15 20:50:15,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:50:15,234 INFO L208 MainTranslator]: Completed translation [2023-02-15 20:50:15,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15 WrapperNode [2023-02-15 20:50:15,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 20:50:15,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 20:50:15,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 20:50:15,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 20:50:15,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,253 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2023-02-15 20:50:15,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 20:50:15,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 20:50:15,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 20:50:15,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 20:50:15,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 20:50:15,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 20:50:15,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 20:50:15,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 20:50:15,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15" (1/1) ... [2023-02-15 20:50:15,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:50:15,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:50:15,303 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) [2023-02-15 20:50:15,334 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 [2023-02-15 20:50:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 20:50:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 20:50:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 20:50:15,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 20:50:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 20:50:15,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 20:50:15,389 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 20:50:15,390 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 20:50:15,503 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 20:50:15,506 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 20:50:15,506 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 20:50:15,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:50:15 BoogieIcfgContainer [2023-02-15 20:50:15,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 20:50:15,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 20:50:15,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 20:50:15,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 20:50:15,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 08:50:15" (1/3) ... [2023-02-15 20:50:15,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f2d694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:50:15, skipping insertion in model container [2023-02-15 20:50:15,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:15" (2/3) ... [2023-02-15 20:50:15,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f2d694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:50:15, skipping insertion in model container [2023-02-15 20:50:15,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:50:15" (3/3) ... [2023-02-15 20:50:15,513 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound10.c [2023-02-15 20:50:15,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 20:50:15,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 20:50:15,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 20:50:15,569 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@126d2fdd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 20:50:15,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 20:50:15,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 20:50:15,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 20:50:15,577 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:50:15,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:50:15,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:50:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:50:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2023-02-15 20:50:15,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:50:15,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603180655] [2023-02-15 20:50:15,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:50:15,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:50:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:50:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:50:15,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:50:15,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603180655] [2023-02-15 20:50:15,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603180655] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:50:15,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:50:15,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 20:50:15,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200886378] [2023-02-15 20:50:15,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:50:15,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 20:50:15,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:50:15,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 20:50:15,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:50:15,721 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2023-02-15 20:50:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:50:15,734 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2023-02-15 20:50:15,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 20:50:15,736 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 [2023-02-15 20:50:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:50:15,740 INFO L225 Difference]: With dead ends: 32 [2023-02-15 20:50:15,740 INFO L226 Difference]: Without dead ends: 13 [2023-02-15 20:50:15,743 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 [2023-02-15 20:50:15,746 INFO L413 NwaCegarLoop]: 19 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, 19 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 [2023-02-15 20:50:15,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:50:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-15 20:50:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-02-15 20:50:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 20:50:15,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-02-15 20:50:15,767 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2023-02-15 20:50:15,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:50:15,768 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-02-15 20:50:15,768 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) [2023-02-15 20:50:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-02-15 20:50:15,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 20:50:15,769 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:50:15,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:50:15,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 20:50:15,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:50:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:50:15,771 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2023-02-15 20:50:15,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:50:15,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062518378] [2023-02-15 20:50:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:50:15,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:50:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:50:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:50:15,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:50:15,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062518378] [2023-02-15 20:50:15,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062518378] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:50:15,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:50:15,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 20:50:15,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700961300] [2023-02-15 20:50:15,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:50:15,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 20:50:15,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:50:15,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 20:50:15,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 20:50:15,872 INFO L87 Difference]: Start difference. First operand 13 states and 15 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) [2023-02-15 20:50:15,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:50:15,881 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-02-15 20:50:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 20:50:15,881 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 [2023-02-15 20:50:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:50:15,882 INFO L225 Difference]: With dead ends: 22 [2023-02-15 20:50:15,882 INFO L226 Difference]: Without dead ends: 15 [2023-02-15 20:50:15,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 20:50:15,883 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 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 [2023-02-15 20:50:15,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:50:15,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-15 20:50:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-02-15 20:50:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 20:50:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-02-15 20:50:15,886 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2023-02-15 20:50:15,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:50:15,887 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-02-15 20:50:15,887 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) [2023-02-15 20:50:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-02-15 20:50:15,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 20:50:15,887 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:50:15,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:50:15,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 20:50:15,888 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:50:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:50:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2023-02-15 20:50:15,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:50:15,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898206769] [2023-02-15 20:50:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:50:15,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:50:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 20:50:15,895 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 20:50:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 20:50:15,922 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 20:50:15,923 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 20:50:15,923 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 20:50:15,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 20:50:15,927 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-15 20:50:15,929 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 20:50:15,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 08:50:15 BoogieIcfgContainer [2023-02-15 20:50:15,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 20:50:15,942 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 20:50:15,942 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 20:50:15,943 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 20:50:15,943 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:50:15" (3/4) ... [2023-02-15 20:50:15,945 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 20:50:15,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 20:50:15,945 INFO L158 Benchmark]: Toolchain (without parser) took 883.19ms. Allocated memory is still 182.5MB. Free memory was 147.9MB in the beginning and 95.2MB in the end (delta: 52.7MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2023-02-15 20:50:15,945 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:50:15,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.08ms. Allocated memory is still 182.5MB. Free memory was 147.6MB in the beginning and 137.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 20:50:15,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.28ms. Allocated memory is still 182.5MB. Free memory was 137.4MB in the beginning and 135.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:50:15,969 INFO L158 Benchmark]: Boogie Preprocessor took 27.84ms. Allocated memory is still 182.5MB. Free memory was 135.8MB in the beginning and 134.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:50:15,969 INFO L158 Benchmark]: RCFGBuilder took 225.52ms. Allocated memory is still 182.5MB. Free memory was 134.4MB in the beginning and 125.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 20:50:15,970 INFO L158 Benchmark]: TraceAbstraction took 431.05ms. Allocated memory is still 182.5MB. Free memory was 124.9MB in the beginning and 95.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-02-15 20:50:15,971 INFO L158 Benchmark]: Witness Printer took 2.44ms. Allocated memory is still 182.5MB. Free memory was 95.5MB in the beginning and 95.2MB in the end (delta: 326.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:50:15,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.08ms. Allocated memory is still 182.5MB. Free memory was 147.6MB in the beginning and 137.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.28ms. Allocated memory is still 182.5MB. Free memory was 137.4MB in the beginning and 135.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.84ms. Allocated memory is still 182.5MB. Free memory was 135.8MB in the beginning and 134.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 225.52ms. Allocated memory is still 182.5MB. Free memory was 134.4MB in the beginning and 125.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 431.05ms. Allocated memory is still 182.5MB. Free memory was 124.9MB in the beginning and 95.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 2.44ms. Allocated memory is still 182.5MB. Free memory was 95.5MB in the beginning and 95.2MB in the end (delta: 326.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0, r=0] [L32] EXPR counter++ VAL [counter=1, counter++=0, r=0] [L32] COND TRUE counter++<10 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 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, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-02-15 20:50:16,005 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/freire1_unwindbound10.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 6733f5cb9fc343de68240fd800b3186de8da0c1fcb51c576de9d571eaa34d1a7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 20:50:17,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 20:50:17,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 20:50:17,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 20:50:17,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 20:50:17,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 20:50:17,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 20:50:17,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 20:50:17,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 20:50:17,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 20:50:17,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 20:50:17,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 20:50:17,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 20:50:17,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 20:50:17,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 20:50:17,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 20:50:17,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 20:50:17,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 20:50:17,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 20:50:17,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 20:50:17,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 20:50:17,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 20:50:17,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 20:50:17,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 20:50:17,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 20:50:17,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 20:50:17,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 20:50:17,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 20:50:18,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 20:50:18,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 20:50:18,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 20:50:18,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 20:50:18,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 20:50:18,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 20:50:18,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 20:50:18,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 20:50:18,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 20:50:18,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 20:50:18,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 20:50:18,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 20:50:18,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 20:50:18,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-15 20:50:18,030 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 20:50:18,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 20:50:18,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 20:50:18,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 20:50:18,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 20:50:18,032 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 20:50:18,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 20:50:18,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 20:50:18,033 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 20:50:18,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 20:50:18,034 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 20:50:18,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 20:50:18,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 20:50:18,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 20:50:18,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 20:50:18,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 20:50:18,035 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 20:50:18,035 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 20:50:18,035 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 20:50:18,035 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 20:50:18,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 20:50:18,035 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 20:50:18,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 20:50:18,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 20:50:18,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 20:50:18,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 20:50:18,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:50:18,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 20:50:18,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 20:50:18,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 20:50:18,036 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 20:50:18,037 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 20:50:18,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 20:50:18,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 20:50:18,037 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 20:50:18,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 20:50:18,037 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 20:50:18,037 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 20:50:18,038 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6733f5cb9fc343de68240fd800b3186de8da0c1fcb51c576de9d571eaa34d1a7 [2023-02-15 20:50:18,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 20:50:18,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 20:50:18,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 20:50:18,299 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 20:50:18,299 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 20:50:18,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c [2023-02-15 20:50:19,312 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 20:50:19,421 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 20:50:19,421 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c [2023-02-15 20:50:19,425 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8431823/f9ddf575f6e142d093618c4e7230d601/FLAG7b3245d9d [2023-02-15 20:50:19,441 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8431823/f9ddf575f6e142d093618c4e7230d601 [2023-02-15 20:50:19,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 20:50:19,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 20:50:19,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 20:50:19,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 20:50:19,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 20:50:19,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d02158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19, skipping insertion in model container [2023-02-15 20:50:19,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 20:50:19,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 20:50:19,550 WARN L237 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/freire1_unwindbound10.c[712,725] [2023-02-15 20:50:19,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:50:19,566 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 20:50:19,574 WARN L237 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/freire1_unwindbound10.c[712,725] [2023-02-15 20:50:19,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:50:19,586 INFO L208 MainTranslator]: Completed translation [2023-02-15 20:50:19,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19 WrapperNode [2023-02-15 20:50:19,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 20:50:19,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 20:50:19,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 20:50:19,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 20:50:19,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,621 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2023-02-15 20:50:19,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 20:50:19,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 20:50:19,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 20:50:19,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 20:50:19,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,654 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 20:50:19,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 20:50:19,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 20:50:19,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 20:50:19,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19" (1/1) ... [2023-02-15 20:50:19,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:50:19,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:50:19,683 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) [2023-02-15 20:50:19,703 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 [2023-02-15 20:50:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 20:50:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-15 20:50:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 20:50:19,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 20:50:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 20:50:19,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 20:50:19,760 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 20:50:19,762 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 20:50:20,352 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 20:50:20,372 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 20:50:20,372 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 20:50:20,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:50:20 BoogieIcfgContainer [2023-02-15 20:50:20,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 20:50:20,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 20:50:20,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 20:50:20,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 20:50:20,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 08:50:19" (1/3) ... [2023-02-15 20:50:20,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35239ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:50:20, skipping insertion in model container [2023-02-15 20:50:20,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:50:19" (2/3) ... [2023-02-15 20:50:20,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35239ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:50:20, skipping insertion in model container [2023-02-15 20:50:20,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:50:20" (3/3) ... [2023-02-15 20:50:20,379 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound10.c [2023-02-15 20:50:20,396 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 20:50:20,396 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 20:50:20,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 20:50:20,435 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e4a95a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 20:50:20,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 20:50:20,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 20:50:20,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 20:50:20,441 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:50:20,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:50:20,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:50:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:50:20,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2023-02-15 20:50:20,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 20:50:20,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771645567] [2023-02-15 20:50:20,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:50:20,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:50:20,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 20:50:20,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 20:50:20,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 20:50:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:50:20,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 20:50:20,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:50:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:50:20,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:50:20,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 20:50:20,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771645567] [2023-02-15 20:50:20,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771645567] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:50:20,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:50:20,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 20:50:20,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037493645] [2023-02-15 20:50:20,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:50:20,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 20:50:20,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 20:50:20,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 20:50:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:50:20,830 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2023-02-15 20:50:20,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:50:20,844 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2023-02-15 20:50:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 20:50:20,847 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 [2023-02-15 20:50:20,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:50:20,852 INFO L225 Difference]: With dead ends: 32 [2023-02-15 20:50:20,852 INFO L226 Difference]: Without dead ends: 13 [2023-02-15 20:50:20,854 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 [2023-02-15 20:50:20,856 INFO L413 NwaCegarLoop]: 19 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, 19 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 [2023-02-15 20:50:20,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:50:20,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-15 20:50:20,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-02-15 20:50:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 20:50:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-02-15 20:50:20,876 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2023-02-15 20:50:20,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:50:20,877 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-02-15 20:50:20,877 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) [2023-02-15 20:50:20,877 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-02-15 20:50:20,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 20:50:20,878 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:50:20,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:50:20,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-15 20:50:21,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:50:21,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:50:21,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:50:21,093 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2023-02-15 20:50:21,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 20:50:21,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592063892] [2023-02-15 20:50:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:50:21,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:50:21,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 20:50:21,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 20:50:21,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-15 20:50:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:50:21,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 20:50:21,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:50:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:50:21,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:50:21,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 20:50:21,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592063892] [2023-02-15 20:50:21,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592063892] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:50:21,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:50:21,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 20:50:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196203762] [2023-02-15 20:50:21,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:50:21,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 20:50:21,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 20:50:21,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 20:50:21,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 20:50:21,399 INFO L87 Difference]: Start difference. First operand 13 states and 15 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) [2023-02-15 20:50:22,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-15 20:50:22,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:50:22,637 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-02-15 20:50:22,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 20:50:22,638 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 [2023-02-15 20:50:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:50:22,638 INFO L225 Difference]: With dead ends: 22 [2023-02-15 20:50:22,638 INFO L226 Difference]: Without dead ends: 15 [2023-02-15 20:50:22,638 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 [2023-02-15 20:50:22,639 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-15 20:50:22,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-15 20:50:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-15 20:50:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-02-15 20:50:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 20:50:22,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-02-15 20:50:22,643 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2023-02-15 20:50:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:50:22,643 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-02-15 20:50:22,643 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) [2023-02-15 20:50:22,643 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-02-15 20:50:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 20:50:22,643 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:50:22,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:50:22,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-15 20:50:22,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:50:22,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:50:22,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:50:22,858 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2023-02-15 20:50:22,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 20:50:22,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446005121] [2023-02-15 20:50:22,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:50:22,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:50:22,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 20:50:22,861 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 20:50:22,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-15 20:50:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 20:50:23,122 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 20:50:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 20:50:23,362 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2023-02-15 20:50:23,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [798339256] [2023-02-15 20:50:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:50:23,363 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-15 20:50:23,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-15 20:50:23,365 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-15 20:50:23,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-02-15 20:50:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 20:50:23,820 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 20:50:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat