./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/hard2_valuebound2.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 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:27:36,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:27:36,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:27:36,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:27:36,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:27:36,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:27:36,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:27:36,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:27:36,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:27:36,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:27:36,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:27:36,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:27:36,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:27:36,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:27:36,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:27:36,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:27:36,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:27:36,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:27:36,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:27:36,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:27:36,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:27:36,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:27:36,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:27:36,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:27:36,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:27:36,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:27:36,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:27:36,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:27:36,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:27:36,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:27:36,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:27:36,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:27:36,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:27:36,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:27:36,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:27:36,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:27:36,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:27:36,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:27:36,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:27:36,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:27:36,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:27:36,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 02:27:36,484 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:27:36,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:27:36,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:27:36,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:27:36,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:27:36,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:27:36,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:27:36,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:27:36,501 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:27:36,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:27:36,502 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:27:36,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 02:27:36,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:27:36,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:27:36,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:27:36,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:27:36,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:27:36,503 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:27:36,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:27:36,504 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:27:36,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:27:36,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:27:36,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:27:36,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:27:36,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:27:36,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:27:36,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:27:36,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:27:36,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 02:27:36,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 02:27:36,506 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:27:36,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:27:36,506 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:27:36,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:27:36,506 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:27:36,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 [2023-02-16 02:27:36,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:27:36,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:27:36,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:27:36,758 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:27:36,758 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:27:36,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2023-02-16 02:27:37,897 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:27:38,092 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:27:38,093 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2023-02-16 02:27:38,098 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682b8cc92/234a05584a4d4a6bbf09d6050dbc51b0/FLAGa3824dbe6 [2023-02-16 02:27:38,113 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682b8cc92/234a05584a4d4a6bbf09d6050dbc51b0 [2023-02-16 02:27:38,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:27:38,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:27:38,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:27:38,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:27:38,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:27:38,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47475aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38, skipping insertion in model container [2023-02-16 02:27:38,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:27:38,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:27:38,278 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/hard2_valuebound2.c[526,539] [2023-02-16 02:27:38,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:27:38,314 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:27:38,323 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/hard2_valuebound2.c[526,539] [2023-02-16 02:27:38,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:27:38,338 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:27:38,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38 WrapperNode [2023-02-16 02:27:38,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:27:38,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:27:38,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:27:38,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:27:38,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,361 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-02-16 02:27:38,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:27:38,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:27:38,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:27:38,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:27:38,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,376 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:27:38,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:27:38,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:27:38,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:27:38,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38" (1/1) ... [2023-02-16 02:27:38,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:27:38,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:27:38,412 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) [2023-02-16 02:27:38,414 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 [2023-02-16 02:27:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:27:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 02:27:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:27:38,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:27:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 02:27:38,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 02:27:38,483 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:27:38,485 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:27:38,588 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:27:38,593 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:27:38,593 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 02:27:38,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:27:38 BoogieIcfgContainer [2023-02-16 02:27:38,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:27:38,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:27:38,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:27:38,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:27:38,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:27:38" (1/3) ... [2023-02-16 02:27:38,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71691cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:27:38, skipping insertion in model container [2023-02-16 02:27:38,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:27:38" (2/3) ... [2023-02-16 02:27:38,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71691cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:27:38, skipping insertion in model container [2023-02-16 02:27:38,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:27:38" (3/3) ... [2023-02-16 02:27:38,602 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound2.c [2023-02-16 02:27:38,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:27:38,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:27:38,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:27:38,656 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;@3894b44, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:27:38,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:27:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 02:27:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 02:27:38,669 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:27:38,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:27:38,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:27:38,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:27:38,676 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2023-02-16 02:27:38,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:27:38,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218502697] [2023-02-16 02:27:38,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:38,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:27:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:27:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:27:38,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:27:38,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218502697] [2023-02-16 02:27:38,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218502697] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:27:38,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:27:38,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 02:27:38,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074472266] [2023-02-16 02:27:38,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:27:38,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 02:27:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:27:38,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 02:27:38,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:27:38,864 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:27:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:27:38,882 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2023-02-16 02:27:38,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 02:27:38,887 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-16 02:27:38,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:27:38,892 INFO L225 Difference]: With dead ends: 49 [2023-02-16 02:27:38,893 INFO L226 Difference]: Without dead ends: 22 [2023-02-16 02:27:38,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:27:38,898 INFO L413 NwaCegarLoop]: 34 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, 34 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 [2023-02-16 02:27:38,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:27:38,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-16 02:27:38,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-16 02:27:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 02:27:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-02-16 02:27:38,926 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2023-02-16 02:27:38,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:27:38,927 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-02-16 02:27:38,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:27:38,927 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-02-16 02:27:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 02:27:38,928 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:27:38,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:27:38,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 02:27:38,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:27:38,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:27:38,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times [2023-02-16 02:27:38,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:27:38,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037070202] [2023-02-16 02:27:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:38,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:27:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:27:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:27:39,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:27:39,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037070202] [2023-02-16 02:27:39,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037070202] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:27:39,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:27:39,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 02:27:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863950470] [2023-02-16 02:27:39,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:27:39,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:27:39,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:27:39,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:27:39,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 02:27:39,067 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:27:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:27:39,164 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2023-02-16 02:27:39,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:27:39,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-16 02:27:39,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:27:39,167 INFO L225 Difference]: With dead ends: 35 [2023-02-16 02:27:39,167 INFO L226 Difference]: Without dead ends: 33 [2023-02-16 02:27:39,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:27:39,169 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:27:39,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:27:39,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-16 02:27:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2023-02-16 02:27:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 02:27:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2023-02-16 02:27:39,178 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2023-02-16 02:27:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:27:39,178 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-02-16 02:27:39,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:27:39,180 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2023-02-16 02:27:39,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 02:27:39,181 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:27:39,181 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:27:39,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 02:27:39,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:27:39,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:27:39,183 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times [2023-02-16 02:27:39,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:27:39,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145712958] [2023-02-16 02:27:39,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:39,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:27:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:27:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:27:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:27:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:27:39,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:27:39,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145712958] [2023-02-16 02:27:39,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145712958] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:27:39,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:27:39,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 02:27:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298847035] [2023-02-16 02:27:39,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:27:39,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:27:39,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:27:39,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:27:39,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 02:27:39,335 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 02:27:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:27:39,398 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2023-02-16 02:27:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:27:39,398 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-02-16 02:27:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:27:39,399 INFO L225 Difference]: With dead ends: 39 [2023-02-16 02:27:39,400 INFO L226 Difference]: Without dead ends: 37 [2023-02-16 02:27:39,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:27:39,401 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:27:39,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 88 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:27:39,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-16 02:27:39,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2023-02-16 02:27:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 02:27:39,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-02-16 02:27:39,409 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2023-02-16 02:27:39,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:27:39,410 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-02-16 02:27:39,410 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 02:27:39,410 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-02-16 02:27:39,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 02:27:39,411 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:27:39,411 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:27:39,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 02:27:39,412 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:27:39,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:27:39,412 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times [2023-02-16 02:27:39,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:27:39,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504427564] [2023-02-16 02:27:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:39,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:27:39,425 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:27:39,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265837203] [2023-02-16 02:27:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:39,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:27:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:27:39,429 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) [2023-02-16 02:27:39,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 02:27:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:27:39,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 02:27:39,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:27:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 02:27:39,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:27:39,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 02:27:39,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:27:39,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504427564] [2023-02-16 02:27:39,825 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:27:39,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265837203] [2023-02-16 02:27:39,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265837203] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:27:39,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:27:39,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-16 02:27:39,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143639573] [2023-02-16 02:27:39,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:27:39,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 02:27:39,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:27:39,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 02:27:39,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-16 02:27:39,829 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 02:27:40,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:27:40,017 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2023-02-16 02:27:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 02:27:40,017 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2023-02-16 02:27:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:27:40,019 INFO L225 Difference]: With dead ends: 65 [2023-02-16 02:27:40,020 INFO L226 Difference]: Without dead ends: 51 [2023-02-16 02:27:40,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-16 02:27:40,021 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:27:40,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 48 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:27:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-16 02:27:40,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-16 02:27:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-16 02:27:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2023-02-16 02:27:40,048 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 19 [2023-02-16 02:27:40,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:27:40,049 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2023-02-16 02:27:40,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 02:27:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2023-02-16 02:27:40,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 02:27:40,050 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:27:40,050 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:27:40,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 02:27:40,256 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 [2023-02-16 02:27:40,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:27:40,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:27:40,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times [2023-02-16 02:27:40,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:27:40,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039345380] [2023-02-16 02:27:40,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:40,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:27:40,267 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:27:40,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394017597] [2023-02-16 02:27:40,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:40,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:27:40,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:27:40,270 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) [2023-02-16 02:27:40,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 02:27:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:27:40,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 02:27:40,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:27:40,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 02:27:40,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:27:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 02:27:40,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:27:40,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039345380] [2023-02-16 02:27:40,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:27:40,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394017597] [2023-02-16 02:27:40,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394017597] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:27:40,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:27:40,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-16 02:27:40,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424621864] [2023-02-16 02:27:40,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:27:40,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 02:27:40,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:27:40,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 02:27:40,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-16 02:27:40,552 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 02:27:40,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:27:40,694 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2023-02-16 02:27:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 02:27:40,695 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 26 [2023-02-16 02:27:40,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:27:40,701 INFO L225 Difference]: With dead ends: 66 [2023-02-16 02:27:40,702 INFO L226 Difference]: Without dead ends: 59 [2023-02-16 02:27:40,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-02-16 02:27:40,703 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:27:40,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 67 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:27:40,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-16 02:27:40,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2023-02-16 02:27:40,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-16 02:27:40,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2023-02-16 02:27:40,722 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 26 [2023-02-16 02:27:40,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:27:40,722 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2023-02-16 02:27:40,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 02:27:40,722 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2023-02-16 02:27:40,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-16 02:27:40,729 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:27:40,729 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:27:40,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 02:27:40,934 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 [2023-02-16 02:27:40,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:27:40,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:27:40,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times [2023-02-16 02:27:40,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:27:40,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671857151] [2023-02-16 02:27:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:40,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:27:40,945 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:27:40,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488218342] [2023-02-16 02:27:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:40,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:27:40,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:27:40,948 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) [2023-02-16 02:27:40,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 02:27:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:27:41,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-16 02:27:41,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:27:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-02-16 02:27:41,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:27:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-02-16 02:27:41,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:27:41,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671857151] [2023-02-16 02:27:41,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:27:41,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488218342] [2023-02-16 02:27:41,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488218342] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:27:41,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:27:41,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-02-16 02:27:41,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039734897] [2023-02-16 02:27:41,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:27:41,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 02:27:41,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:27:41,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 02:27:41,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-02-16 02:27:41,893 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2023-02-16 02:27:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:27:44,430 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2023-02-16 02:27:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 02:27:44,431 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 56 [2023-02-16 02:27:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:27:44,433 INFO L225 Difference]: With dead ends: 142 [2023-02-16 02:27:44,433 INFO L226 Difference]: Without dead ends: 111 [2023-02-16 02:27:44,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-02-16 02:27:44,434 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 46 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:27:44,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 116 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-16 02:27:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-02-16 02:27:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2023-02-16 02:27:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.203125) internal successors, (77), 71 states have internal predecessors, (77), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 24 states have call predecessors, (30), 30 states have call successors, (30) [2023-02-16 02:27:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 138 transitions. [2023-02-16 02:27:44,471 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 138 transitions. Word has length 56 [2023-02-16 02:27:44,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:27:44,471 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 138 transitions. [2023-02-16 02:27:44,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2023-02-16 02:27:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 138 transitions. [2023-02-16 02:27:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-16 02:27:44,473 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:27:44,474 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:27:44,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 02:27:44,679 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 [2023-02-16 02:27:44,679 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:27:44,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:27:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times [2023-02-16 02:27:44,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:27:44,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774928635] [2023-02-16 02:27:44,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:44,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:27:44,690 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:27:44,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144757972] [2023-02-16 02:27:44,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:44,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:27:44,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:27:44,692 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) [2023-02-16 02:27:44,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 02:27:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:27:44,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-16 02:27:44,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:27:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-16 02:27:44,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:27:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-16 02:27:45,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:27:45,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774928635] [2023-02-16 02:27:45,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:27:45,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144757972] [2023-02-16 02:27:45,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144757972] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:27:45,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:27:45,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-02-16 02:27:45,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714262705] [2023-02-16 02:27:45,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:27:45,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 02:27:45,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:27:45,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 02:27:45,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-02-16 02:27:45,412 INFO L87 Difference]: Start difference. First operand 106 states and 138 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) [2023-02-16 02:27:48,368 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 [] [2023-02-16 02:27:48,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:27:48,456 INFO L93 Difference]: Finished difference Result 161 states and 210 transitions. [2023-02-16 02:27:48,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 02:27:48,457 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) Word has length 67 [2023-02-16 02:27:48,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:27:48,459 INFO L225 Difference]: With dead ends: 161 [2023-02-16 02:27:48,459 INFO L226 Difference]: Without dead ends: 123 [2023-02-16 02:27:48,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2023-02-16 02:27:48,460 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 24 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-16 02:27:48,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 103 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 495 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2023-02-16 02:27:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-02-16 02:27:48,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2023-02-16 02:27:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 66 states have internal predecessors, (72), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-02-16 02:27:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2023-02-16 02:27:48,486 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 67 [2023-02-16 02:27:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:27:48,486 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2023-02-16 02:27:48,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) [2023-02-16 02:27:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2023-02-16 02:27:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-16 02:27:48,488 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:27:48,488 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:27:48,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 02:27:48,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:27:48,709 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:27:48,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:27:48,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1728532070, now seen corresponding path program 1 times [2023-02-16 02:27:48,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:27:48,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877601170] [2023-02-16 02:27:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:48,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:27:48,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:27:48,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865242208] [2023-02-16 02:27:48,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:48,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:27:48,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:27:48,722 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:27:48,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 02:27:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:27:48,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-16 02:27:48,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:27:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-02-16 02:27:48,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:27:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-02-16 02:27:49,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:27:49,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877601170] [2023-02-16 02:27:49,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:27:49,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865242208] [2023-02-16 02:27:49,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865242208] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:27:49,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:27:49,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-16 02:27:49,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104320574] [2023-02-16 02:27:49,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:27:49,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 02:27:49,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:27:49,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 02:27:49,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-16 02:27:49,208 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-02-16 02:27:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:27:49,452 INFO L93 Difference]: Finished difference Result 120 states and 144 transitions. [2023-02-16 02:27:49,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 02:27:49,453 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 72 [2023-02-16 02:27:49,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:27:49,454 INFO L225 Difference]: With dead ends: 120 [2023-02-16 02:27:49,454 INFO L226 Difference]: Without dead ends: 93 [2023-02-16 02:27:49,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-02-16 02:27:49,455 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 10 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:27:49,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 187 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:27:49,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-16 02:27:49,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-02-16 02:27:49,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 61 states have internal predecessors, (65), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-16 02:27:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2023-02-16 02:27:49,479 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 72 [2023-02-16 02:27:49,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:27:49,480 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2023-02-16 02:27:49,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-02-16 02:27:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2023-02-16 02:27:49,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-16 02:27:49,482 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:27:49,482 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:27:49,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 02:27:49,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:27:49,692 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:27:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:27:49,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1412721000, now seen corresponding path program 1 times [2023-02-16 02:27:49,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:27:49,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730036695] [2023-02-16 02:27:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:49,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:27:49,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:27:49,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817737849] [2023-02-16 02:27:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:49,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:27:49,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:27:49,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:27:49,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 02:27:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:27:49,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 02:27:49,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:27:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-02-16 02:27:49,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:27:49,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:27:49,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730036695] [2023-02-16 02:27:49,878 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:27:49,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817737849] [2023-02-16 02:27:49,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817737849] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:27:49,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:27:49,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 02:27:49,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088075379] [2023-02-16 02:27:49,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:27:49,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 02:27:49,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:27:49,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 02:27:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:27:49,882 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-02-16 02:27:49,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:27:49,980 INFO L93 Difference]: Finished difference Result 125 states and 151 transitions. [2023-02-16 02:27:49,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:27:49,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2023-02-16 02:27:49,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:27:49,982 INFO L225 Difference]: With dead ends: 125 [2023-02-16 02:27:49,982 INFO L226 Difference]: Without dead ends: 88 [2023-02-16 02:27:49,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 02:27:49,985 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:27:49,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 101 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:27:49,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-16 02:27:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2023-02-16 02:27:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-02-16 02:27:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2023-02-16 02:27:50,011 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 86 [2023-02-16 02:27:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:27:50,012 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2023-02-16 02:27:50,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-02-16 02:27:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2023-02-16 02:27:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-16 02:27:50,014 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:27:50,014 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:27:50,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 02:27:50,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:27:50,220 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:27:50,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:27:50,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 2 times [2023-02-16 02:27:50,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:27:50,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938151313] [2023-02-16 02:27:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:50,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:27:50,229 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:27:50,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679773830] [2023-02-16 02:27:50,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:27:50,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:27:50,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:27:50,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:27:50,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 02:27:50,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:27:50,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:27:50,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-16 02:27:50,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:27:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-02-16 02:27:50,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:27:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-02-16 02:27:51,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:27:51,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938151313] [2023-02-16 02:27:51,279 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:27:51,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679773830] [2023-02-16 02:27:51,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679773830] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:27:51,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:27:51,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2023-02-16 02:27:51,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955346519] [2023-02-16 02:27:51,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:27:51,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-16 02:27:51,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:27:51,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-16 02:27:51,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-02-16 02:27:51,280 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-02-16 02:27:51,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:27:51,682 INFO L93 Difference]: Finished difference Result 126 states and 143 transitions. [2023-02-16 02:27:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 02:27:51,683 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 86 [2023-02-16 02:27:51,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:27:51,684 INFO L225 Difference]: With dead ends: 126 [2023-02-16 02:27:51,684 INFO L226 Difference]: Without dead ends: 77 [2023-02-16 02:27:51,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2023-02-16 02:27:51,685 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 56 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:27:51,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 132 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:27:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-16 02:27:51,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-16 02:27:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 50 states have internal predecessors, (50), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-16 02:27:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2023-02-16 02:27:51,703 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 86 [2023-02-16 02:27:51,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:27:51,704 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2023-02-16 02:27:51,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-02-16 02:27:51,704 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2023-02-16 02:27:51,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-02-16 02:27:51,706 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:27:51,706 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:27:51,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 02:27:51,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:27:51,912 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:27:51,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:27:51,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1373298297, now seen corresponding path program 2 times [2023-02-16 02:27:51,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:27:51,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753862198] [2023-02-16 02:27:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:27:51,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:27:51,931 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:27:51,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405111338] [2023-02-16 02:27:51,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:27:51,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:27:51,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:27:51,937 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:27:51,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 02:27:51,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:27:51,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:27:51,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-16 02:27:51,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:27:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-02-16 02:27:52,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:28:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-02-16 02:28:11,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:28:11,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753862198] [2023-02-16 02:28:11,147 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:28:11,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405111338] [2023-02-16 02:28:11,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405111338] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:28:11,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:28:11,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2023-02-16 02:28:11,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009153818] [2023-02-16 02:28:11,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:28:11,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-16 02:28:11,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:28:11,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-16 02:28:11,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2023-02-16 02:28:11,150 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 21 states have internal predecessors, (44), 12 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 10 states have call predecessors, (28), 12 states have call successors, (28) [2023-02-16 02:28:11,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:28:11,660 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2023-02-16 02:28:11,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 02:28:11,661 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 21 states have internal predecessors, (44), 12 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 10 states have call predecessors, (28), 12 states have call successors, (28) Word has length 91 [2023-02-16 02:28:11,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:28:11,662 INFO L225 Difference]: With dead ends: 87 [2023-02-16 02:28:11,662 INFO L226 Difference]: Without dead ends: 82 [2023-02-16 02:28:11,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2023-02-16 02:28:11,663 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 02:28:11,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 157 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 02:28:11,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-16 02:28:11,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-02-16 02:28:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.0) internal successors, (54), 54 states have internal predecessors, (54), 16 states have call successors, (16), 12 states have call predecessors, (16), 11 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-16 02:28:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2023-02-16 02:28:11,682 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 91 [2023-02-16 02:28:11,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:28:11,682 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2023-02-16 02:28:11,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 21 states have internal predecessors, (44), 12 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 10 states have call predecessors, (28), 12 states have call successors, (28) [2023-02-16 02:28:11,683 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2023-02-16 02:28:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-02-16 02:28:11,684 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:28:11,684 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:28:11,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 02:28:11,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-16 02:28:11,892 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:28:11,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:28:11,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1231859808, now seen corresponding path program 1 times [2023-02-16 02:28:11,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:28:11,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616260266] [2023-02-16 02:28:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:28:11,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:28:11,900 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:28:11,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215127011] [2023-02-16 02:28:11,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:28:11,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:28:11,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:28:11,905 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:28:11,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 02:28:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:28:11,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-16 02:28:11,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:28:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 64 proven. 72 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-02-16 02:28:12,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:28:22,824 WARN L233 SmtUtils]: Spent 8.77s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 02:28:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:28:23,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616260266] [2023-02-16 02:28:23,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:28:23,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215127011] [2023-02-16 02:28:23,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215127011] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:28:23,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:28:23,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-02-16 02:28:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935130880] [2023-02-16 02:28:23,203 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 02:28:23,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 02:28:23,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:28:23,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 02:28:23,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-02-16 02:28:23,206 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2023-02-16 02:28:23,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:28:23,551 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2023-02-16 02:28:23,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 02:28:23,551 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 97 [2023-02-16 02:28:23,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:28:23,552 INFO L225 Difference]: With dead ends: 82 [2023-02-16 02:28:23,552 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 02:28:23,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2023-02-16 02:28:23,553 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:28:23,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 117 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:28:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 02:28:23,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 02:28:23,554 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) [2023-02-16 02:28:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 02:28:23,554 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 97 [2023-02-16 02:28:23,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:28:23,554 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 02:28:23,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2023-02-16 02:28:23,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 02:28:23,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 02:28:23,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 02:28:23,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-16 02:28:23,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:28:23,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 02:28:27,447 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2023-02-16 02:28:27,447 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 44 56) the Hoare annotation is: (let ((.cse11 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|)) (.cse7 (* 2 |ULTIMATE.start_main_~B~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 2)) (.cse6 (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~d~0#1| .cse7)) (.cse4 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| .cse11 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)))) (.cse1 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse10 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse8 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse5 (= |ULTIMATE.start_main_~d~0#1| 1))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~d~0#1| 2) .cse3) (and (= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) .cse4 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~B~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse5 (= .cse6 |ULTIMATE.start_main_~A~0#1|)) (and (<= 2 |ULTIMATE.start_main_~d~0#1|) (<= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) .cse0 .cse4 (<= .cse6 |ULTIMATE.start_main_~A~0#1|) (<= .cse7 .cse6) (<= .cse6 2) .cse8 .cse3) (and (<= |ULTIMATE.start_main_~r~0#1| 2) .cse1 .cse4 .cse2 .cse9 (<= .cse7 |ULTIMATE.start_main_~r~0#1|) .cse8 (= |ULTIMATE.start_main_~p~0#1| 4)) (and .cse1 .cse10 (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) .cse2 .cse9) (and (= |ULTIMATE.start_main_~A~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse11)) (<= |ULTIMATE.start_main_~q~0#1| 2) .cse10 .cse9 (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 |ULTIMATE.start_main_~r~0#1|) .cse8 .cse5)))) [2023-02-16 02:28:27,447 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-16 02:28:27,447 INFO L895 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (and (= |ULTIMATE.start_main_~A~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~r~0#1|)) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|))) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) [2023-02-16 02:28:27,447 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 61) the Hoare annotation is: true [2023-02-16 02:28:27,448 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (= 0 |ULTIMATE.start_main_~q~0#1|)) (.cse0 (<= |ULTIMATE.start_main_~r~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse2 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)) (.cse4 (* 2 |ULTIMATE.start_main_~B~0#1|)) (.cse5 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~d~0#1| .cse2) .cse3 (<= .cse4 (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|)) (= |ULTIMATE.start_main_~d~0#1| 2) .cse5 (= |ULTIMATE.start_main_~d~0#1| .cse4)) (and .cse0 .cse1 .cse3 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) (<= 0 |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) .cse5) (and .cse0 .cse3 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) .cse2)) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~B~0#1| 1) (<= .cse4 |ULTIMATE.start_main_~r~0#1|) .cse5 (= |ULTIMATE.start_main_~p~0#1| 4)))) [2023-02-16 02:28:27,448 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 02:28:27,448 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 02:28:27,448 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse11 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|)) (.cse7 (* 2 |ULTIMATE.start_main_~B~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 2)) (.cse6 (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~d~0#1| .cse7)) (.cse4 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| .cse11 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)))) (.cse1 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse10 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse8 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse5 (= |ULTIMATE.start_main_~d~0#1| 1))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~d~0#1| 2) .cse3) (and (= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) .cse4 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~B~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse5 (= .cse6 |ULTIMATE.start_main_~A~0#1|)) (and (<= 2 |ULTIMATE.start_main_~d~0#1|) (<= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) .cse0 .cse4 (<= .cse6 |ULTIMATE.start_main_~A~0#1|) (<= .cse7 .cse6) (<= .cse6 2) .cse8 .cse3) (and (<= |ULTIMATE.start_main_~r~0#1| 2) .cse1 .cse4 .cse2 .cse9 (<= .cse7 |ULTIMATE.start_main_~r~0#1|) .cse8 (= |ULTIMATE.start_main_~p~0#1| 4)) (and .cse1 .cse10 (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) .cse2 .cse9) (and (= |ULTIMATE.start_main_~A~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse11)) (<= |ULTIMATE.start_main_~q~0#1| 2) .cse10 .cse9 (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 |ULTIMATE.start_main_~r~0#1|) .cse8 .cse5)))) [2023-02-16 02:28:27,448 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-16 02:28:27,448 INFO L895 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (let ((.cse4 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|)) (.cse11 (* 2 |ULTIMATE.start_main_~B~0#1|))) (let ((.cse7 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 2)) (.cse10 (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~d~0#1| .cse11)) (.cse9 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| .cse4 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)))) (.cse8 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse5 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse6 (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~d~0#1| 2) .cse3) (and (= |ULTIMATE.start_main_~A~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse4)) (<= |ULTIMATE.start_main_~q~0#1| 2) .cse5 .cse6 (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 0 |ULTIMATE.start_main_~r~0#1|) .cse7 .cse8) (and (= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) .cse9 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~B~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse7 (= .cse10 |ULTIMATE.start_main_~A~0#1|)) (and (<= 2 |ULTIMATE.start_main_~d~0#1|) (<= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) .cse0 .cse9 (<= .cse10 |ULTIMATE.start_main_~A~0#1|) (<= .cse11 .cse10) (<= .cse10 2) .cse8 .cse3) (and (<= |ULTIMATE.start_main_~r~0#1| 2) .cse1 .cse9 .cse2 .cse12 (<= .cse11 |ULTIMATE.start_main_~r~0#1|) .cse8 (= |ULTIMATE.start_main_~p~0#1| 4)) (and .cse1 .cse5 .cse6 .cse2 .cse12)))) [2023-02-16 02:28:27,448 INFO L899 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed. [2023-02-16 02:28:27,448 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 02:28:27,448 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~A~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~d~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~B~0#1| 1))) [2023-02-16 02:28:27,448 INFO L899 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed. [2023-02-16 02:28:27,452 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 02:28:27,452 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse1 (= 0 |ULTIMATE.start_main_~q~0#1|)) (.cse0 (<= |ULTIMATE.start_main_~r~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse2 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)) (.cse4 (* 2 |ULTIMATE.start_main_~B~0#1|)) (.cse5 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~d~0#1| .cse2) .cse3 (<= .cse4 (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|)) (= |ULTIMATE.start_main_~d~0#1| 2) .cse5 (= |ULTIMATE.start_main_~d~0#1| .cse4)) (and .cse0 .cse1 .cse3 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) (<= 0 |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) .cse5) (and .cse0 .cse3 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) .cse2)) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~B~0#1| 1) (<= .cse4 |ULTIMATE.start_main_~r~0#1|) .cse5 (= |ULTIMATE.start_main_~p~0#1| 4)))) [2023-02-16 02:28:27,452 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2023-02-16 02:28:27,452 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (= 0 |ULTIMATE.start_main_~q~0#1|)) (.cse0 (<= |ULTIMATE.start_main_~r~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse2 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)) (.cse4 (* 2 |ULTIMATE.start_main_~B~0#1|)) (.cse5 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~d~0#1| .cse2) .cse3 (<= .cse4 (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|)) (= |ULTIMATE.start_main_~d~0#1| 2) .cse5 (= |ULTIMATE.start_main_~d~0#1| .cse4)) (and .cse0 .cse1 .cse3 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) (<= 0 |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) .cse5) (and .cse0 .cse3 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) .cse2)) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~B~0#1| 1) (<= .cse4 |ULTIMATE.start_main_~r~0#1|) .cse5 (= |ULTIMATE.start_main_~p~0#1| 4)))) [2023-02-16 02:28:27,452 INFO L895 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse1 (= 0 |ULTIMATE.start_main_~q~0#1|)) (.cse0 (<= |ULTIMATE.start_main_~r~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse2 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|)) (.cse4 (* 2 |ULTIMATE.start_main_~B~0#1|)) (.cse5 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~d~0#1| .cse2) .cse3 (<= .cse4 (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|)) (= |ULTIMATE.start_main_~d~0#1| 2) .cse5 (= |ULTIMATE.start_main_~d~0#1| .cse4)) (and .cse0 .cse1 .cse3 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) (<= 0 |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) .cse5) (and .cse0 .cse3 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) .cse2)) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~B~0#1| 1) (<= .cse4 |ULTIMATE.start_main_~r~0#1|) .cse5 (= |ULTIMATE.start_main_~p~0#1| 4)))) [2023-02-16 02:28:27,452 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-16 02:28:27,453 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-16 02:28:27,453 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-16 02:28:27,453 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-16 02:28:27,453 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-02-16 02:28:27,453 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-16 02:28:27,455 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:28:27,456 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 02:28:27,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 02:28:27 BoogieIcfgContainer [2023-02-16 02:28:27,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 02:28:27,475 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 02:28:27,475 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 02:28:27,475 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 02:28:27,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:27:38" (3/4) ... [2023-02-16 02:28:27,479 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 02:28:27,484 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-16 02:28:27,486 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-02-16 02:28:27,487 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-02-16 02:28:27,487 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-16 02:28:27,487 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 02:28:27,487 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 02:28:27,509 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 02:28:27,510 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 02:28:27,510 INFO L158 Benchmark]: Toolchain (without parser) took 49393.03ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 72.1MB in the beginning and 116.5MB in the end (delta: -44.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:28:27,510 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:28:27,510 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.00ms. Allocated memory is still 115.3MB. Free memory was 72.1MB in the beginning and 61.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 02:28:27,511 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.19ms. Allocated memory is still 115.3MB. Free memory was 61.5MB in the beginning and 59.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:28:27,511 INFO L158 Benchmark]: Boogie Preprocessor took 19.52ms. Allocated memory is still 115.3MB. Free memory was 59.9MB in the beginning and 58.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:28:27,511 INFO L158 Benchmark]: RCFGBuilder took 210.26ms. Allocated memory is still 115.3MB. Free memory was 58.7MB in the beginning and 47.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 02:28:27,512 INFO L158 Benchmark]: TraceAbstraction took 48877.70ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 47.4MB in the beginning and 119.7MB in the end (delta: -72.2MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. [2023-02-16 02:28:27,512 INFO L158 Benchmark]: Witness Printer took 34.47ms. Allocated memory is still 148.9MB. Free memory was 119.7MB in the beginning and 116.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-16 02:28:27,513 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 115.3MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 220.00ms. Allocated memory is still 115.3MB. Free memory was 72.1MB in the beginning and 61.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.19ms. Allocated memory is still 115.3MB. Free memory was 61.5MB in the beginning and 59.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.52ms. Allocated memory is still 115.3MB. Free memory was 59.9MB in the beginning and 58.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 210.26ms. Allocated memory is still 115.3MB. Free memory was 58.7MB in the beginning and 47.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 48877.70ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 47.4MB in the beginning and 119.7MB in the end (delta: -72.2MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. * Witness Printer took 34.47ms. Allocated memory is still 148.9MB. Free memory was 119.7MB in the beginning and 116.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 17]: 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 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.8s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 292 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 247 mSDsluCounter, 1242 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 873 mSDsCounter, 285 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2686 IncrementalHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 285 mSolverCounterUnsat, 369 mSDtfsCounter, 2686 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1079 GetRequests, 916 SyntacticMatches, 9 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 14.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=6, InterpolantAutomatonStates: 106, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 51 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 96 PreInvPairs, 140 NumberOfFragments, 972 HoareAnnotationTreeSize, 96 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 9306 FormulaSimplificationTreeSizeReductionInter, 3.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 34.3s InterpolantComputationTime, 632 NumberOfCodeBlocks, 632 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1030 ConstructedInterpolants, 0 QuantifiedInterpolants, 14151 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1610 ConjunctsInSsa, 246 ConjunctsInUnsatCore, 19 InterpolantComputations, 4 PerfectInterpolantSequences, 3246/3644 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: 44]: Loop Invariant Derived loop invariant: ((((((((p == 2 && r == A) && q == 0) && d == 2) && d == 2 * B) || ((((q == p && A + d == r + q * B + p * B) && r + B == A) && d == 1) && r + d == A)) || ((((((((2 <= d && q <= p) && p == 2) && A + d == r + q * B + p * B) && r + d <= A) && 2 * B <= r + d) && r + d <= 2) && cond == 1) && d == 2 * B)) || (((((((r <= 2 && r == A) && A + d == r + q * B + p * B) && q == 0) && B == 1) && 2 * B <= r) && cond == 1) && p == 4)) || ((((r == A && p == 1) && d == B) && q == 0) && B == 1)) || ((((((((A == r + q * B && q <= 2) && p == 1) && B == 1) && r <= 0) && 0 <= A) && 0 <= r) && cond == 1) && d == 1) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((r <= 2 && 0 == q) && d == p * B) && r == A) && 2 * B <= r + d) && d == 2) && cond == 1) && d == 2 * B) || (((((((r <= 2 && 0 == q) && r == A) && p == 1) && d == B) && 0 <= A) && d == 1) && cond == 1)) || (((((((r <= 2 && r == A) && A + d == r + q * B + p * B) && q == 0) && B == 1) && 2 * B <= r) && cond == 1) && p == 4) RESULT: Ultimate proved your program to be correct! [2023-02-16 02:28:27,563 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