./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/geo1-ll_unwindbound20.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 358d950fcb60363ca711e5ee684e998bf5a6b6b14c5043f9c788a7a76c08fd00 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 01:57:31,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 01:57:31,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 01:57:31,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 01:57:31,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 01:57:31,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 01:57:31,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 01:57:31,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 01:57:31,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 01:57:31,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 01:57:31,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 01:57:31,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 01:57:31,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 01:57:31,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 01:57:31,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 01:57:31,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 01:57:31,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 01:57:31,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 01:57:31,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 01:57:31,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 01:57:31,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 01:57:31,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 01:57:31,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 01:57:31,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 01:57:31,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 01:57:31,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 01:57:31,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 01:57:31,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 01:57:31,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 01:57:31,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 01:57:31,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 01:57:31,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 01:57:31,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 01:57:31,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 01:57:31,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 01:57:31,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 01:57:31,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 01:57:31,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 01:57:31,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 01:57:31,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 01:57:31,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 01:57:31,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 01:57:31,542 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 01:57:31,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 01:57:31,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 01:57:31,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 01:57:31,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 01:57:31,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 01:57:31,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 01:57:31,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 01:57:31,544 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 01:57:31,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 01:57:31,545 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 01:57:31,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 01:57:31,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 01:57:31,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 01:57:31,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 01:57:31,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 01:57:31,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 01:57:31,546 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 01:57:31,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 01:57:31,546 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 01:57:31,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 01:57:31,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 01:57:31,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 01:57:31,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 01:57:31,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:57:31,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 01:57:31,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 01:57:31,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 01:57:31,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 01:57:31,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 01:57:31,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 01:57:31,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 01:57:31,549 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 01:57:31,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 01:57:31,550 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 01:57:31,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 358d950fcb60363ca711e5ee684e998bf5a6b6b14c5043f9c788a7a76c08fd00 [2023-02-17 01:57:31,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 01:57:31,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 01:57:31,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 01:57:31,739 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 01:57:31,739 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 01:57:31,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound20.c [2023-02-17 01:57:32,792 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 01:57:33,038 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 01:57:33,038 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound20.c [2023-02-17 01:57:33,044 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada8176f3/a758a64203f548838bf5e37cb2a67446/FLAGfff9b3fa3 [2023-02-17 01:57:33,060 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada8176f3/a758a64203f548838bf5e37cb2a67446 [2023-02-17 01:57:33,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 01:57:33,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 01:57:33,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 01:57:33,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 01:57:33,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 01:57:33,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66d56c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33, skipping insertion in model container [2023-02-17 01:57:33,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 01:57:33,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 01:57:33,228 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/geo1-ll_unwindbound20.c[546,559] [2023-02-17 01:57:33,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:57:33,245 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 01:57:33,254 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/geo1-ll_unwindbound20.c[546,559] [2023-02-17 01:57:33,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:57:33,271 INFO L208 MainTranslator]: Completed translation [2023-02-17 01:57:33,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33 WrapperNode [2023-02-17 01:57:33,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 01:57:33,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 01:57:33,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 01:57:33,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 01:57:33,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,292 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2023-02-17 01:57:33,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 01:57:33,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 01:57:33,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 01:57:33,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 01:57:33,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,304 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 01:57:33,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 01:57:33,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 01:57:33,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 01:57:33,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33" (1/1) ... [2023-02-17 01:57:33,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:57:33,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:57:33,341 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) [2023-02-17 01:57:33,343 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 [2023-02-17 01:57:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 01:57:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-17 01:57:33,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-17 01:57:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 01:57:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 01:57:33,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 01:57:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 01:57:33,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 01:57:33,439 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 01:57:33,441 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 01:57:33,585 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 01:57:33,589 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 01:57:33,590 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 01:57:33,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:57:33 BoogieIcfgContainer [2023-02-17 01:57:33,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 01:57:33,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 01:57:33,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 01:57:33,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 01:57:33,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 01:57:33" (1/3) ... [2023-02-17 01:57:33,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1610c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:57:33, skipping insertion in model container [2023-02-17 01:57:33,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:57:33" (2/3) ... [2023-02-17 01:57:33,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1610c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:57:33, skipping insertion in model container [2023-02-17 01:57:33,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:57:33" (3/3) ... [2023-02-17 01:57:33,598 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound20.c [2023-02-17 01:57:33,612 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 01:57:33,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 01:57:33,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 01:57:33,668 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;@3e1333c6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 01:57:33,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 01:57:33,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 01:57:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 01:57:33,679 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:57:33,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:57:33,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:57:33,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:57:33,686 INFO L85 PathProgramCache]: Analyzing trace with hash 995043441, now seen corresponding path program 1 times [2023-02-17 01:57:33,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:57:33,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087677398] [2023-02-17 01:57:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:57:33,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:57:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:57:33,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:57:33,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087677398] [2023-02-17 01:57:33,788 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 01:57:33,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065114172] [2023-02-17 01:57:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:57:33,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:57:33,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:57:33,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:57:33,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 01:57:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:57:33,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 01:57:33,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:57:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 01:57:33,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:57:33,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065114172] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:57:33,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:57:33,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 01:57:33,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095181434] [2023-02-17 01:57:33,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:57:33,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 01:57:33,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:57:33,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 01:57:33,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 01:57:33,904 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 01:57:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:57:33,944 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2023-02-17 01:57:33,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 01:57:33,950 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-02-17 01:57:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:57:33,970 INFO L225 Difference]: With dead ends: 47 [2023-02-17 01:57:33,970 INFO L226 Difference]: Without dead ends: 21 [2023-02-17 01:57:33,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 01:57:33,975 INFO L413 NwaCegarLoop]: 28 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, 28 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 [2023-02-17 01:57:33,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:57:34,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-17 01:57:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-17 01:57:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 01:57:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-02-17 01:57:34,029 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 19 [2023-02-17 01:57:34,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:57:34,030 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-02-17 01:57:34,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 01:57:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-02-17 01:57:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 01:57:34,033 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:57:34,033 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:57:34,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 01:57:34,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-17 01:57:34,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:57:34,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:57:34,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1059321002, now seen corresponding path program 1 times [2023-02-17 01:57:34,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:57:34,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340845337] [2023-02-17 01:57:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:57:34,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:57:34,262 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:57:34,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215645560] [2023-02-17 01:57:34,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:57:34,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:57:34,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:57:34,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:57:34,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 01:57:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:57:34,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-17 01:57:34,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:57:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 01:57:34,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:57:34,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:57:34,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340845337] [2023-02-17 01:57:34,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:57:34,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215645560] [2023-02-17 01:57:34,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215645560] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:57:34,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:57:34,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 01:57:34,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016350151] [2023-02-17 01:57:34,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:57:34,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 01:57:34,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:57:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 01:57:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 01:57:34,389 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 01:57:34,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:57:34,459 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2023-02-17 01:57:34,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 01:57:34,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-02-17 01:57:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:57:34,460 INFO L225 Difference]: With dead ends: 32 [2023-02-17 01:57:34,461 INFO L226 Difference]: Without dead ends: 30 [2023-02-17 01:57:34,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-17 01:57:34,462 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:57:34,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 84 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:57:34,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-17 01:57:34,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-02-17 01:57:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 01:57:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-02-17 01:57:34,469 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2023-02-17 01:57:34,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:57:34,470 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-02-17 01:57:34,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 01:57:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-02-17 01:57:34,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 01:57:34,471 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:57:34,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:57:34,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 01:57:34,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-17 01:57:34,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:57:34,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:57:34,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1437250441, now seen corresponding path program 1 times [2023-02-17 01:57:34,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:57:34,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964948458] [2023-02-17 01:57:34,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:57:34,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:57:34,693 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:57:34,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99031763] [2023-02-17 01:57:34,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:57:34,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:57:34,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:57:34,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:57:34,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 01:57:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:57:34,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 01:57:34,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:57:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:57:34,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:57:34,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:57:34,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964948458] [2023-02-17 01:57:34,752 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:57:34,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99031763] [2023-02-17 01:57:34,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99031763] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:57:34,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:57:34,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 01:57:34,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122129534] [2023-02-17 01:57:34,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:57:34,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 01:57:34,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:57:34,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 01:57:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 01:57:34,755 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 01:57:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:57:34,765 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2023-02-17 01:57:34,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 01:57:34,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-02-17 01:57:34,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:57:34,767 INFO L225 Difference]: With dead ends: 36 [2023-02-17 01:57:34,767 INFO L226 Difference]: Without dead ends: 28 [2023-02-17 01:57:34,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 01:57:34,769 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 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 [2023-02-17 01:57:34,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:57:34,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-17 01:57:34,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-17 01:57:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 01:57:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-02-17 01:57:34,789 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20 [2023-02-17 01:57:34,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:57:34,789 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-02-17 01:57:34,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 01:57:34,790 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-02-17 01:57:34,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 01:57:34,791 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:57:34,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:57:34,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 01:57:34,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:57:34,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:57:34,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:57:34,997 INFO L85 PathProgramCache]: Analyzing trace with hash -833627624, now seen corresponding path program 1 times [2023-02-17 01:57:34,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:57:34,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527724683] [2023-02-17 01:57:34,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:57:34,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:57:35,010 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:57:35,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714653409] [2023-02-17 01:57:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:57:35,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:57:35,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:57:35,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:57:35,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 01:57:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:57:35,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-17 01:57:35,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:57:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:57:35,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:57:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:57:35,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:57:35,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527724683] [2023-02-17 01:57:35,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:57:35,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714653409] [2023-02-17 01:57:35,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714653409] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:57:35,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:57:35,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-02-17 01:57:35,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315958384] [2023-02-17 01:57:35,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:57:35,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 01:57:35,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:57:35,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 01:57:35,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-17 01:57:35,280 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 01:57:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:57:35,563 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2023-02-17 01:57:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 01:57:35,563 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-02-17 01:57:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:57:35,564 INFO L225 Difference]: With dead ends: 28 [2023-02-17 01:57:35,564 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 01:57:35,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-17 01:57:35,565 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 01:57:35,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 108 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 01:57:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 01:57:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 01:57:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:57:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 01:57:35,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2023-02-17 01:57:35,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:57:35,566 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 01:57:35,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 01:57:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 01:57:35,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 01:57:35,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 01:57:35,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-17 01:57:35,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:57:35,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 01:57:35,780 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 01:57:35,780 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 45) the Hoare annotation is: (let ((.cse0 (= (+ (+ (+ (- |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (- |ULTIMATE.start_main_~y~0#1|)) 1) 0))) (or .cse0 (and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0 (= |ULTIMATE.start_main_~x~0#1| 1) (<= ~counter~0 0)))) [2023-02-17 01:57:35,781 INFO L899 garLoopResultBuilder]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2023-02-17 01:57:35,781 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-02-17 01:57:35,781 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 01:57:35,781 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 23 51) the Hoare annotation is: true [2023-02-17 01:57:35,781 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (= (+ (+ (+ (- |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (- |ULTIMATE.start_main_~y~0#1|)) 1) 0))) (or (and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0 (= |ULTIMATE.start_main_~x~0#1| 1)) .cse0)) [2023-02-17 01:57:35,781 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 45) no Hoare annotation was computed. [2023-02-17 01:57:35,781 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 01:57:35,782 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 01:57:35,782 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= ~counter~0 0) [2023-02-17 01:57:35,782 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (<= ~counter~0 0) [2023-02-17 01:57:35,782 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (= (+ (+ |ULTIMATE.start_main_~x~0#1| 1) (- |ULTIMATE.start_main_~y~0#1|)) 0) [2023-02-17 01:57:35,782 INFO L899 garLoopResultBuilder]: For program point L49-1(line 49) no Hoare annotation was computed. [2023-02-17 01:57:35,782 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2023-02-17 01:57:35,783 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2023-02-17 01:57:35,783 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 14) no Hoare annotation was computed. [2023-02-17 01:57:35,783 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 14) the Hoare annotation is: true [2023-02-17 01:57:35,783 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2023-02-17 01:57:35,784 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2023-02-17 01:57:35,784 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2023-02-17 01:57:35,784 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2023-02-17 01:57:35,784 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2023-02-17 01:57:35,784 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 21) the Hoare annotation is: true [2023-02-17 01:57:35,784 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2023-02-17 01:57:35,787 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-02-17 01:57:35,789 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 01:57:35,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 01:57:35 BoogieIcfgContainer [2023-02-17 01:57:35,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 01:57:35,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 01:57:35,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 01:57:35,809 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 01:57:35,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:57:33" (3/4) ... [2023-02-17 01:57:35,811 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 01:57:35,816 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-17 01:57:35,816 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-17 01:57:35,820 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-17 01:57:35,820 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 01:57:35,821 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 01:57:35,821 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 01:57:35,844 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 01:57:35,844 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 01:57:35,845 INFO L158 Benchmark]: Toolchain (without parser) took 2781.29ms. Allocated memory is still 138.4MB. Free memory was 108.5MB in the beginning and 67.1MB in the end (delta: 41.3MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2023-02-17 01:57:35,845 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 01:57:35,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.61ms. Allocated memory is still 138.4MB. Free memory was 108.5MB in the beginning and 98.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 01:57:35,846 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.80ms. Allocated memory is still 138.4MB. Free memory was 98.1MB in the beginning and 96.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:57:35,846 INFO L158 Benchmark]: Boogie Preprocessor took 12.82ms. Allocated memory is still 138.4MB. Free memory was 96.6MB in the beginning and 95.6MB in the end (delta: 995.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 01:57:35,846 INFO L158 Benchmark]: RCFGBuilder took 285.41ms. Allocated memory is still 138.4MB. Free memory was 95.3MB in the beginning and 85.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 01:57:35,846 INFO L158 Benchmark]: TraceAbstraction took 2214.85ms. Allocated memory is still 138.4MB. Free memory was 84.9MB in the beginning and 69.6MB in the end (delta: 15.3MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2023-02-17 01:57:35,847 INFO L158 Benchmark]: Witness Printer took 35.98ms. Allocated memory is still 138.4MB. Free memory was 69.6MB in the beginning and 67.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:57:35,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.61ms. Allocated memory is still 138.4MB. Free memory was 108.5MB in the beginning and 98.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.80ms. Allocated memory is still 138.4MB. Free memory was 98.1MB in the beginning and 96.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.82ms. Allocated memory is still 138.4MB. Free memory was 96.6MB in the beginning and 95.6MB in the end (delta: 995.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 285.41ms. Allocated memory is still 138.4MB. Free memory was 95.3MB in the beginning and 85.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2214.85ms. Allocated memory is still 138.4MB. Free memory was 84.9MB in the beginning and 69.6MB in the end (delta: 15.3MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * Witness Printer took 35.98ms. Allocated memory is still 138.4MB. Free memory was 69.6MB in the beginning and 67.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 274 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 190 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 84 mSDtfsCounter, 108 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 22 NumberOfFragments, 88 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 105 ConstructedInterpolants, 1 QuantifiedInterpolants, 270 SizeOfPredicates, 11 NumberOfNonLiveVariables, 288 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 22/24 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: -x + x * z + -y + 1 == 0 || (((y == z && -x + x * z + -y + 1 == 0) && x == 1) && counter <= 0) RESULT: Ultimate proved your program to be correct! [2023-02-17 01:57:35,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE