./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 574ddb4e 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-?-574ddb4 [2023-02-18 17:33:44,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 17:33:44,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 17:33:44,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 17:33:44,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 17:33:44,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 17:33:44,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 17:33:44,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 17:33:44,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 17:33:44,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 17:33:44,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 17:33:44,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 17:33:44,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 17:33:44,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 17:33:44,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 17:33:44,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 17:33:44,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 17:33:44,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 17:33:44,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 17:33:44,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 17:33:44,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 17:33:44,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 17:33:44,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 17:33:44,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 17:33:44,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 17:33:44,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 17:33:44,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 17:33:44,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 17:33:44,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 17:33:44,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 17:33:44,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 17:33:44,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 17:33:44,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 17:33:44,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 17:33:44,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 17:33:44,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 17:33:44,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 17:33:44,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 17:33:44,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 17:33:44,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 17:33:44,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 17:33:44,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 17:33:44,393 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 17:33:44,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 17:33:44,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 17:33:44,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 17:33:44,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 17:33:44,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 17:33:44,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 17:33:44,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 17:33:44,395 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 17:33:44,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 17:33:44,395 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 17:33:44,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 17:33:44,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 17:33:44,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 17:33:44,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 17:33:44,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 17:33:44,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 17:33:44,396 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 17:33:44,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 17:33:44,396 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 17:33:44,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 17:33:44,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 17:33:44,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 17:33:44,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 17:33:44,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 17:33:44,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 17:33:44,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 17:33:44,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 17:33:44,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 17:33:44,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 17:33:44,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 17:33:44,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 17:33:44,397 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 17:33:44,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 17:33:44,398 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 17:33:44,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6733f5cb9fc343de68240fd800b3186de8da0c1fcb51c576de9d571eaa34d1a7 [2023-02-18 17:33:44,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 17:33:44,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 17:33:44,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 17:33:44,593 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 17:33:44,593 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 17:33:44,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c [2023-02-18 17:33:45,574 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 17:33:45,717 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 17:33:45,718 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c [2023-02-18 17:33:45,721 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2bbeb5f9/7c783fa5880d414d9bbb33cdbd79e674/FLAGd75e73746 [2023-02-18 17:33:45,730 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2bbeb5f9/7c783fa5880d414d9bbb33cdbd79e674 [2023-02-18 17:33:45,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 17:33:45,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 17:33:45,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 17:33:45,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 17:33:45,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 17:33:45,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@653c9116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45, skipping insertion in model container [2023-02-18 17:33:45,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 17:33:45,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 17:33:45,852 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] [2023-02-18 17:33:45,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 17:33:45,870 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 17:33:45,879 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] [2023-02-18 17:33:45,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 17:33:45,890 INFO L208 MainTranslator]: Completed translation [2023-02-18 17:33:45,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45 WrapperNode [2023-02-18 17:33:45,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 17:33:45,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 17:33:45,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 17:33:45,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 17:33:45,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,908 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2023-02-18 17:33:45,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 17:33:45,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 17:33:45,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 17:33:45,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 17:33:45,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,921 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 17:33:45,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 17:33:45,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 17:33:45,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 17:33:45,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45" (1/1) ... [2023-02-18 17:33:45,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 17:33:45,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:33:45,955 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) [2023-02-18 17:33:45,958 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 [2023-02-18 17:33:45,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 17:33:45,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 17:33:45,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 17:33:45,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 17:33:45,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 17:33:45,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 17:33:46,020 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 17:33:46,021 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 17:33:46,081 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 17:33:46,084 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 17:33:46,084 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 17:33:46,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 05:33:46 BoogieIcfgContainer [2023-02-18 17:33:46,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 17:33:46,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 17:33:46,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 17:33:46,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 17:33:46,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 05:33:45" (1/3) ... [2023-02-18 17:33:46,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c9b28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 05:33:46, skipping insertion in model container [2023-02-18 17:33:46,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:45" (2/3) ... [2023-02-18 17:33:46,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c9b28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 05:33:46, skipping insertion in model container [2023-02-18 17:33:46,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 05:33:46" (3/3) ... [2023-02-18 17:33:46,091 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound10.c [2023-02-18 17:33:46,101 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 17:33:46,101 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 17:33:46,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 17:33:46,133 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;@344f8aff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 17:33:46,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 17:33:46,136 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) [2023-02-18 17:33:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 17:33:46,140 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:33:46,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:33:46,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:33:46,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:33:46,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2023-02-18 17:33:46,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:33:46,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696196578] [2023-02-18 17:33:46,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:33:46,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:33:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:33:46,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 17:33:46,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:33:46,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696196578] [2023-02-18 17:33:46,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696196578] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 17:33:46,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 17:33:46,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 17:33:46,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468804397] [2023-02-18 17:33:46,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 17:33:46,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 17:33:46,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:33:46,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 17:33:46,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 17:33:46,282 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) [2023-02-18 17:33:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:33:46,293 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2023-02-18 17:33:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 17:33:46,294 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 [2023-02-18 17:33:46,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:33:46,298 INFO L225 Difference]: With dead ends: 32 [2023-02-18 17:33:46,298 INFO L226 Difference]: Without dead ends: 13 [2023-02-18 17:33:46,300 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 [2023-02-18 17:33:46,302 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 [2023-02-18 17:33:46,303 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] [2023-02-18 17:33:46,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-18 17:33:46,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-02-18 17:33:46,322 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) [2023-02-18 17:33:46,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-02-18 17:33:46,323 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2023-02-18 17:33:46,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:33:46,323 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-02-18 17:33:46,324 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) [2023-02-18 17:33:46,324 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-02-18 17:33:46,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 17:33:46,324 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:33:46,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:33:46,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 17:33:46,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:33:46,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:33:46,326 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2023-02-18 17:33:46,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:33:46,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554071571] [2023-02-18 17:33:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:33:46,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:33:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:33:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 17:33:46,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:33:46,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554071571] [2023-02-18 17:33:46,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554071571] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 17:33:46,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 17:33:46,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 17:33:46,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204237499] [2023-02-18 17:33:46,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 17:33:46,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 17:33:46,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:33:46,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 17:33:46,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 17:33:46,416 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) [2023-02-18 17:33:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:33:46,451 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-02-18 17:33:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 17:33:46,452 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 [2023-02-18 17:33:46,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:33:46,452 INFO L225 Difference]: With dead ends: 22 [2023-02-18 17:33:46,452 INFO L226 Difference]: Without dead ends: 15 [2023-02-18 17:33:46,453 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 [2023-02-18 17:33:46,453 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 [2023-02-18 17:33:46,454 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] [2023-02-18 17:33:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-18 17:33:46,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-02-18 17:33:46,457 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) [2023-02-18 17:33:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-02-18 17:33:46,457 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2023-02-18 17:33:46,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:33:46,457 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-02-18 17:33:46,458 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) [2023-02-18 17:33:46,458 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-02-18 17:33:46,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 17:33:46,458 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:33:46,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:33:46,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 17:33:46,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:33:46,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:33:46,459 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2023-02-18 17:33:46,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:33:46,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099823197] [2023-02-18 17:33:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:33:46,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:33:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 17:33:46,480 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 17:33:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 17:33:46,496 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 17:33:46,508 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 17:33:46,509 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 17:33:46,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 17:33:46,527 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-18 17:33:46,529 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 17:33:46,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 05:33:46 BoogieIcfgContainer [2023-02-18 17:33:46,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 17:33:46,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 17:33:46,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 17:33:46,547 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 17:33:46,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 05:33:46" (3/4) ... [2023-02-18 17:33:46,550 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-18 17:33:46,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 17:33:46,551 INFO L158 Benchmark]: Toolchain (without parser) took 818.67ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 77.4MB in the end (delta: 52.8MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2023-02-18 17:33:46,551 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 167.8MB. Free memory was 127.3MB in the beginning and 127.3MB in the end (delta: 24.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 17:33:46,552 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.92ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 119.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 17:33:46,552 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.46ms. Allocated memory is still 167.8MB. Free memory was 119.7MB in the beginning and 118.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 17:33:46,554 INFO L158 Benchmark]: Boogie Preprocessor took 14.49ms. Allocated memory is still 167.8MB. Free memory was 118.5MB in the beginning and 117.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 17:33:46,555 INFO L158 Benchmark]: RCFGBuilder took 161.72ms. Allocated memory is still 167.8MB. Free memory was 117.2MB in the beginning and 108.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 17:33:46,556 INFO L158 Benchmark]: TraceAbstraction took 459.48ms. Allocated memory is still 167.8MB. Free memory was 107.2MB in the beginning and 77.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-02-18 17:33:46,557 INFO L158 Benchmark]: Witness Printer took 3.42ms. Allocated memory is still 167.8MB. Free memory was 77.8MB in the beginning and 77.4MB in the end (delta: 431.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 17:33:46,559 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 167.8MB. Free memory was 127.3MB in the beginning and 127.3MB in the end (delta: 24.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.92ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 119.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.46ms. Allocated memory is still 167.8MB. Free memory was 119.7MB in the beginning and 118.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.49ms. Allocated memory is still 167.8MB. Free memory was 118.5MB in the beginning and 117.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 161.72ms. Allocated memory is still 167.8MB. Free memory was 117.2MB in the beginning and 108.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 459.48ms. Allocated memory is still 167.8MB. Free memory was 107.2MB in the beginning and 77.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 3.42ms. Allocated memory is still 167.8MB. Free memory was 77.8MB in the beginning and 77.4MB in the end (delta: 431.7kB). 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 [2023-02-18 17:33:46,581 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-?-574ddb4 [2023-02-18 17:33:48,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 17:33:48,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 17:33:48,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 17:33:48,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 17:33:48,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 17:33:48,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 17:33:48,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 17:33:48,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 17:33:48,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 17:33:48,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 17:33:48,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 17:33:48,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 17:33:48,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 17:33:48,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 17:33:48,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 17:33:48,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 17:33:48,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 17:33:48,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 17:33:48,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 17:33:48,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 17:33:48,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 17:33:48,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 17:33:48,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 17:33:48,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 17:33:48,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 17:33:48,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 17:33:48,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 17:33:48,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 17:33:48,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 17:33:48,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 17:33:48,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 17:33:48,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 17:33:48,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 17:33:48,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 17:33:48,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 17:33:48,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 17:33:48,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 17:33:48,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 17:33:48,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 17:33:48,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 17:33:48,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-18 17:33:48,354 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 17:33:48,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 17:33:48,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 17:33:48,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 17:33:48,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 17:33:48,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 17:33:48,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 17:33:48,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 17:33:48,358 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 17:33:48,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 17:33:48,359 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 17:33:48,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 17:33:48,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 17:33:48,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 17:33:48,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 17:33:48,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 17:33:48,359 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 17:33:48,360 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 17:33:48,360 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 17:33:48,360 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 17:33:48,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 17:33:48,360 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 17:33:48,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 17:33:48,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 17:33:48,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 17:33:48,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 17:33:48,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 17:33:48,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 17:33:48,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 17:33:48,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 17:33:48,362 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 17:33:48,362 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 17:33:48,362 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 17:33:48,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 17:33:48,362 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 17:33:48,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 17:33:48,363 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 17:33:48,363 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 17:33:48,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6733f5cb9fc343de68240fd800b3186de8da0c1fcb51c576de9d571eaa34d1a7 [2023-02-18 17:33:48,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 17:33:48,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 17:33:48,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 17:33:48,636 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 17:33:48,636 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 17:33:48,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c [2023-02-18 17:33:49,607 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 17:33:49,772 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 17:33:49,772 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c [2023-02-18 17:33:49,777 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9158660de/68d3385870ce47ecb9af9781074f4ddf/FLAG79d228d2d [2023-02-18 17:33:49,785 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9158660de/68d3385870ce47ecb9af9781074f4ddf [2023-02-18 17:33:49,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 17:33:49,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 17:33:49,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 17:33:49,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 17:33:49,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 17:33:49,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:49,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3457741a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49, skipping insertion in model container [2023-02-18 17:33:49,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:49,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 17:33:49,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 17:33:49,891 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] [2023-02-18 17:33:49,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 17:33:49,922 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 17:33:49,933 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] [2023-02-18 17:33:49,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 17:33:49,957 INFO L208 MainTranslator]: Completed translation [2023-02-18 17:33:49,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49 WrapperNode [2023-02-18 17:33:49,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 17:33:49,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 17:33:49,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 17:33:49,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 17:33:49,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:49,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:49,992 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2023-02-18 17:33:49,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 17:33:49,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 17:33:49,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 17:33:49,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 17:33:50,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:50,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:50,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:50,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:50,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:50,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:50,030 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:50,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:50,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 17:33:50,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 17:33:50,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 17:33:50,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 17:33:50,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49" (1/1) ... [2023-02-18 17:33:50,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 17:33:50,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:33:50,064 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) [2023-02-18 17:33:50,083 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 [2023-02-18 17:33:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 17:33:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-18 17:33:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 17:33:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 17:33:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 17:33:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 17:33:50,152 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 17:33:50,154 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 17:33:50,807 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 17:33:50,813 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 17:33:50,813 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 17:33:50,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 05:33:50 BoogieIcfgContainer [2023-02-18 17:33:50,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 17:33:50,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 17:33:50,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 17:33:50,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 17:33:50,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 05:33:49" (1/3) ... [2023-02-18 17:33:50,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9e293d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 05:33:50, skipping insertion in model container [2023-02-18 17:33:50,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:33:49" (2/3) ... [2023-02-18 17:33:50,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9e293d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 05:33:50, skipping insertion in model container [2023-02-18 17:33:50,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 05:33:50" (3/3) ... [2023-02-18 17:33:50,819 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound10.c [2023-02-18 17:33:50,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 17:33:50,838 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 17:33:50,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 17:33:50,878 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;@6d59ec8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 17:33:50,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 17:33:50,881 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) [2023-02-18 17:33:50,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 17:33:50,899 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:33:50,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:33:50,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:33:50,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:33:50,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2023-02-18 17:33:50,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 17:33:50,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245685684] [2023-02-18 17:33:50,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:33:50,913 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 [2023-02-18 17:33:50,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 17:33:50,916 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) [2023-02-18 17:33:50,917 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 [2023-02-18 17:33:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:33:51,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 17:33:51,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:33:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 17:33:51,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 17:33:51,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 17:33:51,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245685684] [2023-02-18 17:33:51,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245685684] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 17:33:51,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 17:33:51,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 17:33:51,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332725869] [2023-02-18 17:33:51,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 17:33:51,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 17:33:51,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 17:33:51,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 17:33:51,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 17:33:51,208 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) [2023-02-18 17:33:51,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:33:51,220 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2023-02-18 17:33:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 17:33:51,221 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 [2023-02-18 17:33:51,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:33:51,225 INFO L225 Difference]: With dead ends: 32 [2023-02-18 17:33:51,225 INFO L226 Difference]: Without dead ends: 13 [2023-02-18 17:33:51,227 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 [2023-02-18 17:33:51,243 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 [2023-02-18 17:33:51,244 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] [2023-02-18 17:33:51,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-18 17:33:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-02-18 17:33:51,264 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) [2023-02-18 17:33:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-02-18 17:33:51,265 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2023-02-18 17:33:51,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:33:51,265 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-02-18 17:33:51,266 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) [2023-02-18 17:33:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-02-18 17:33:51,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 17:33:51,266 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:33:51,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:33:51,282 INFO L552 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)] Ended with exit code 0 [2023-02-18 17:33:51,482 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 [2023-02-18 17:33:51,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:33:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:33:51,483 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2023-02-18 17:33:51,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 17:33:51,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801797216] [2023-02-18 17:33:51,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:33:51,484 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 [2023-02-18 17:33:51,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 17:33:51,485 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) [2023-02-18 17:33:51,485 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 [2023-02-18 17:33:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:33:51,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 17:33:51,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:33:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 17:33:51,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 17:33:51,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 17:33:51,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801797216] [2023-02-18 17:33:51,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801797216] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 17:33:51,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 17:33:51,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 17:33:51,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22855010] [2023-02-18 17:33:51,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 17:33:51,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 17:33:51,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 17:33:51,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 17:33:51,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 17:33:51,776 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) [2023-02-18 17:33:52,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:33:52,678 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-02-18 17:33:52,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 17:33:52,678 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 [2023-02-18 17:33:52,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:33:52,679 INFO L225 Difference]: With dead ends: 22 [2023-02-18 17:33:52,679 INFO L226 Difference]: Without dead ends: 15 [2023-02-18 17:33:52,680 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 [2023-02-18 17:33:52,681 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-02-18 17:33:52,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-18 17:33:52,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-18 17:33:52,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-02-18 17:33:52,687 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) [2023-02-18 17:33:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-02-18 17:33:52,688 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2023-02-18 17:33:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:33:52,689 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-02-18 17:33:52,689 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) [2023-02-18 17:33:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-02-18 17:33:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 17:33:52,689 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:33:52,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:33:52,706 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 [2023-02-18 17:33:52,894 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 [2023-02-18 17:33:52,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:33:52,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:33:52,895 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2023-02-18 17:33:52,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 17:33:52,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235126233] [2023-02-18 17:33:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:33:52,897 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 [2023-02-18 17:33:52,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 17:33:52,898 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) [2023-02-18 17:33:52,901 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 [2023-02-18 17:33:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 17:33:53,133 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 17:33:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 17:33:53,373 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2023-02-18 17:33:53,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [347398456] [2023-02-18 17:33:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:33:53,373 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-18 17:33:53,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-18 17:33:53,374 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) [2023-02-18 17:33:53,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-02-18 17:33:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 17:33:53,817 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 17:33:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat