./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 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/hard-ll_valuebound20.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 6977cec8a403ff3f16926270da45a38f7b1f51a39c72ba3797fb74b9637fd796 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-15 00:09:46,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 00:09:46,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 00:09:46,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 00:09:46,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 00:09:46,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 00:09:46,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 00:09:46,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 00:09:46,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 00:09:46,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 00:09:46,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 00:09:46,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 00:09:46,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 00:09:46,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 00:09:46,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 00:09:46,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 00:09:46,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 00:09:46,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 00:09:46,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 00:09:46,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 00:09:46,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 00:09:46,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 00:09:46,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 00:09:46,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 00:09:46,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 00:09:46,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 00:09:46,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 00:09:46,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 00:09:46,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 00:09:46,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 00:09:46,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 00:09:46,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 00:09:46,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 00:09:46,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 00:09:46,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 00:09:46,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 00:09:46,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 00:09:46,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 00:09:46,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 00:09:46,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 00:09:46,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 00:09:46,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 00:09:46,387 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 00:09:46,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 00:09:46,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 00:09:46,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 00:09:46,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 00:09:46,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 00:09:46,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 00:09:46,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 00:09:46,390 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 00:09:46,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 00:09:46,390 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 00:09:46,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 00:09:46,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 00:09:46,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 00:09:46,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 00:09:46,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 00:09:46,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 00:09:46,391 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 00:09:46,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 00:09:46,392 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 00:09:46,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 00:09:46,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 00:09:46,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 00:09:46,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 00:09:46,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 00:09:46,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 00:09:46,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 00:09:46,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 00:09:46,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 00:09:46,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 00:09:46,394 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 00:09:46,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 00:09:46,394 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 00:09:46,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 00:09:46,394 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 00:09:46,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6977cec8a403ff3f16926270da45a38f7b1f51a39c72ba3797fb74b9637fd796 [2023-02-15 00:09:46,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 00:09:46,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 00:09:46,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 00:09:46,616 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 00:09:46,616 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 00:09:46,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound20.c [2023-02-15 00:09:47,579 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 00:09:47,742 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 00:09:47,743 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound20.c [2023-02-15 00:09:47,749 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/070da3ebb/c2ebaf312bc1411f8a9f7d1f83ad31c6/FLAG7de531ebf [2023-02-15 00:09:48,157 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/070da3ebb/c2ebaf312bc1411f8a9f7d1f83ad31c6 [2023-02-15 00:09:48,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 00:09:48,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 00:09:48,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 00:09:48,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 00:09:48,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 00:09:48,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@452f6284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48, skipping insertion in model container [2023-02-15 00:09:48,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 00:09:48,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 00:09:48,265 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/hard-ll_valuebound20.c[538,551] [2023-02-15 00:09:48,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 00:09:48,282 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 00:09:48,290 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/hard-ll_valuebound20.c[538,551] [2023-02-15 00:09:48,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 00:09:48,305 INFO L208 MainTranslator]: Completed translation [2023-02-15 00:09:48,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48 WrapperNode [2023-02-15 00:09:48,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 00:09:48,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 00:09:48,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 00:09:48,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 00:09:48,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,327 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2023-02-15 00:09:48,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 00:09:48,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 00:09:48,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 00:09:48,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 00:09:48,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,341 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 00:09:48,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 00:09:48,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 00:09:48,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 00:09:48,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48" (1/1) ... [2023-02-15 00:09:48,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 00:09:48,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:09:48,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 00:09:48,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 00:09:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 00:09:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 00:09:48,403 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 00:09:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 00:09:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 00:09:48,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 00:09:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 00:09:48,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 00:09:48,451 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 00:09:48,453 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 00:09:48,553 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 00:09:48,562 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 00:09:48,562 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 00:09:48,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:09:48 BoogieIcfgContainer [2023-02-15 00:09:48,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 00:09:48,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 00:09:48,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 00:09:48,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 00:09:48,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:09:48" (1/3) ... [2023-02-15 00:09:48,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f48c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:09:48, skipping insertion in model container [2023-02-15 00:09:48,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:09:48" (2/3) ... [2023-02-15 00:09:48,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f48c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:09:48, skipping insertion in model container [2023-02-15 00:09:48,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:09:48" (3/3) ... [2023-02-15 00:09:48,570 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound20.c [2023-02-15 00:09:48,581 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 00:09:48,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 00:09:48,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 00:09:48,626 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;@321b818f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 00:09:48,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 00:09:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-15 00:09:48,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 00:09:48,635 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:09:48,636 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:09:48,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:09:48,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:09:48,641 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2023-02-15 00:09:48,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:09:48,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929468255] [2023-02-15 00:09:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:09:48,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:09:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 00:09:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:48,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 00:09:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:48,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 00:09:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 00:09:48,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:09:48,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929468255] [2023-02-15 00:09:48,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929468255] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:09:48,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:09:48,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 00:09:48,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393923817] [2023-02-15 00:09:48,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:09:48,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 00:09:48,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:09:48,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 00:09:48,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 00:09:48,859 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 00:09:48,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:09:48,881 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2023-02-15 00:09:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 00:09:48,883 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-02-15 00:09:48,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:09:48,888 INFO L225 Difference]: With dead ends: 63 [2023-02-15 00:09:48,888 INFO L226 Difference]: Without dead ends: 29 [2023-02-15 00:09:48,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 00:09:48,894 INFO L413 NwaCegarLoop]: 43 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, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:09:48,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:09:48,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-15 00:09:48,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-15 00:09:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 00:09:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2023-02-15 00:09:48,930 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2023-02-15 00:09:48,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:09:48,930 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2023-02-15 00:09:48,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 00:09:48,931 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2023-02-15 00:09:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 00:09:48,932 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:09:48,933 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:09:48,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 00:09:48,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:09:48,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:09:48,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2023-02-15 00:09:48,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:09:48,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44253309] [2023-02-15 00:09:48,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:09:48,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:09:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:49,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 00:09:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 00:09:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 00:09:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 00:09:49,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:09:49,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44253309] [2023-02-15 00:09:49,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44253309] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:09:49,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:09:49,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 00:09:49,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035585437] [2023-02-15 00:09:49,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:09:49,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 00:09:49,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:09:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 00:09:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:09:49,151 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 00:09:49,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:09:49,221 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2023-02-15 00:09:49,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 00:09:49,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-02-15 00:09:49,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:09:49,223 INFO L225 Difference]: With dead ends: 42 [2023-02-15 00:09:49,223 INFO L226 Difference]: Without dead ends: 40 [2023-02-15 00:09:49,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 00:09:49,224 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:09:49,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 128 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:09:49,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-15 00:09:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2023-02-15 00:09:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 00:09:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2023-02-15 00:09:49,241 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2023-02-15 00:09:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:09:49,241 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2023-02-15 00:09:49,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 00:09:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2023-02-15 00:09:49,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 00:09:49,242 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:09:49,243 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:09:49,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 00:09:49,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:09:49,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:09:49,244 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2023-02-15 00:09:49,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:09:49,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929442206] [2023-02-15 00:09:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:09:49,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:09:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:49,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 00:09:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:49,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 00:09:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:49,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 00:09:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:49,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-02-15 00:09:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 00:09:49,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:09:49,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929442206] [2023-02-15 00:09:49,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929442206] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:09:49,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:09:49,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 00:09:49,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401571637] [2023-02-15 00:09:49,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:09:49,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 00:09:49,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:09:49,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 00:09:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:09:49,429 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 00:09:49,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:09:49,491 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2023-02-15 00:09:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 00:09:49,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-02-15 00:09:49,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:09:49,492 INFO L225 Difference]: With dead ends: 46 [2023-02-15 00:09:49,492 INFO L226 Difference]: Without dead ends: 44 [2023-02-15 00:09:49,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 00:09:49,494 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:09:49,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 123 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:09:49,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-15 00:09:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2023-02-15 00:09:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 00:09:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-02-15 00:09:49,501 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2023-02-15 00:09:49,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:09:49,502 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-02-15 00:09:49,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 00:09:49,502 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-02-15 00:09:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-15 00:09:49,503 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:09:49,503 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:09:49,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 00:09:49,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:09:49,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:09:49,504 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2023-02-15 00:09:49,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:09:49,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302630530] [2023-02-15 00:09:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:09:49,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:09:49,513 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:09:49,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005970515] [2023-02-15 00:09:49,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:09:49,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:09:49,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:09:49,531 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) [2023-02-15 00:09:49,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 00:09:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:49,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 00:09:49,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:09:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 00:09:49,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:09:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 00:09:49,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:09:49,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302630530] [2023-02-15 00:09:49,885 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:09:49,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005970515] [2023-02-15 00:09:49,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005970515] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:09:49,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:09:49,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-15 00:09:49,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740414181] [2023-02-15 00:09:49,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:09:49,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 00:09:49,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:09:49,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 00:09:49,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-15 00:09:49,888 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-15 00:09:50,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:09:50,069 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2023-02-15 00:09:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 00:09:50,069 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 34 [2023-02-15 00:09:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:09:50,071 INFO L225 Difference]: With dead ends: 72 [2023-02-15 00:09:50,071 INFO L226 Difference]: Without dead ends: 57 [2023-02-15 00:09:50,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-15 00:09:50,073 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:09:50,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 137 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:09:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-15 00:09:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2023-02-15 00:09:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 00:09:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2023-02-15 00:09:50,083 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 34 [2023-02-15 00:09:50,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:09:50,084 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2023-02-15 00:09:50,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-15 00:09:50,084 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2023-02-15 00:09:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-15 00:09:50,085 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:09:50,085 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:09:50,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 00:09:50,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:09:50,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:09:50,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:09:50,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2023-02-15 00:09:50,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:09:50,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300177351] [2023-02-15 00:09:50,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:09:50,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:09:50,303 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:09:50,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515267245] [2023-02-15 00:09:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:09:50,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:09:50,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:09:50,305 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) [2023-02-15 00:09:50,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 00:09:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:50,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-15 00:09:50,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:09:50,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 00:09:50,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:09:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 00:09:50,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:09:50,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300177351] [2023-02-15 00:09:50,988 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:09:50,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515267245] [2023-02-15 00:09:50,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515267245] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:09:50,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:09:50,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2023-02-15 00:09:50,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437369490] [2023-02-15 00:09:50,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:09:50,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 00:09:50,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:09:50,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 00:09:50,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-02-15 00:09:50,989 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2023-02-15 00:09:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:09:51,431 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2023-02-15 00:09:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 00:09:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 41 [2023-02-15 00:09:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:09:51,433 INFO L225 Difference]: With dead ends: 69 [2023-02-15 00:09:51,433 INFO L226 Difference]: Without dead ends: 62 [2023-02-15 00:09:51,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2023-02-15 00:09:51,434 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 00:09:51,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 100 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 00:09:51,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-15 00:09:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-02-15 00:09:51,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-15 00:09:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2023-02-15 00:09:51,444 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 41 [2023-02-15 00:09:51,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:09:51,444 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2023-02-15 00:09:51,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2023-02-15 00:09:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2023-02-15 00:09:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-15 00:09:51,446 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:09:51,446 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:09:51,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 00:09:51,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:09:51,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:09:51,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:09:51,651 INFO L85 PathProgramCache]: Analyzing trace with hash -677073599, now seen corresponding path program 1 times [2023-02-15 00:09:51,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:09:51,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952869009] [2023-02-15 00:09:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:09:51,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:09:51,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:09:51,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958945214] [2023-02-15 00:09:51,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:09:51,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:09:51,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:09:51,701 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) [2023-02-15 00:09:51,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 00:09:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:51,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 00:09:51,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:09:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-02-15 00:09:51,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:09:51,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:09:51,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952869009] [2023-02-15 00:09:51,787 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:09:51,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958945214] [2023-02-15 00:09:51,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958945214] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:09:51,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:09:51,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 00:09:51,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579426301] [2023-02-15 00:09:51,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:09:51,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 00:09:51,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:09:51,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 00:09:51,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 00:09:51,792 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-15 00:09:51,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:09:51,822 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2023-02-15 00:09:51,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 00:09:51,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 69 [2023-02-15 00:09:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:09:51,826 INFO L225 Difference]: With dead ends: 70 [2023-02-15 00:09:51,826 INFO L226 Difference]: Without dead ends: 63 [2023-02-15 00:09:51,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 00:09:51,828 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:09:51,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 67 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:09:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-02-15 00:09:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-02-15 00:09:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 41 states have internal predecessors, (43), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-15 00:09:51,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2023-02-15 00:09:51,848 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 69 [2023-02-15 00:09:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:09:51,848 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2023-02-15 00:09:51,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-15 00:09:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2023-02-15 00:09:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-15 00:09:51,852 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:09:51,852 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:09:51,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 00:09:52,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:09:52,057 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:09:52,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:09:52,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2023-02-15 00:09:52,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:09:52,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615014780] [2023-02-15 00:09:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:09:52,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:09:52,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:09:52,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996933619] [2023-02-15 00:09:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:09:52,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:09:52,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:09:52,091 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) [2023-02-15 00:09:52,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 00:09:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:09:52,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-15 00:09:52,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:09:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 42 proven. 8 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-02-15 00:09:52,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:10:50,921 WARN L233 SmtUtils]: Spent 28.48s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 00:12:33,517 WARN L233 SmtUtils]: Spent 40.84s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 00:13:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-02-15 00:13:40,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:13:40,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615014780] [2023-02-15 00:13:40,737 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:13:40,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996933619] [2023-02-15 00:13:40,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996933619] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:13:40,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:13:40,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2023-02-15 00:13:40,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315649742] [2023-02-15 00:13:40,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:13:40,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-15 00:13:40,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:13:40,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-15 00:13:40,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=411, Unknown=10, NotChecked=0, Total=506 [2023-02-15 00:13:40,738 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2023-02-15 00:13:42,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 00:13:48,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 00:13:55,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 00:13:57,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 00:13:59,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 00:14:04,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 00:14:10,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 00:14:12,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []