./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 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/prodbin-ll_valuebound5.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 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 12:25:14,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 12:25:14,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 12:25:14,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 12:25:14,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 12:25:14,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 12:25:14,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 12:25:14,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 12:25:14,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 12:25:14,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 12:25:14,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 12:25:14,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 12:25:14,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 12:25:14,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 12:25:14,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 12:25:14,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 12:25:14,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 12:25:14,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 12:25:14,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 12:25:14,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 12:25:14,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 12:25:14,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 12:25:14,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 12:25:14,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 12:25:14,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 12:25:14,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 12:25:14,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 12:25:14,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 12:25:14,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 12:25:14,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 12:25:14,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 12:25:14,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 12:25:14,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 12:25:14,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 12:25:14,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 12:25:14,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 12:25:14,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 12:25:14,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 12:25:14,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 12:25:14,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 12:25:14,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 12:25:14,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 12:25:14,479 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 12:25:14,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 12:25:14,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 12:25:14,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 12:25:14,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 12:25:14,480 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 12:25:14,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 12:25:14,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 12:25:14,483 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 12:25:14,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 12:25:14,484 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 12:25:14,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 12:25:14,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 12:25:14,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 12:25:14,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 12:25:14,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 12:25:14,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 12:25:14,485 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 12:25:14,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 12:25:14,486 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 12:25:14,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 12:25:14,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 12:25:14,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 12:25:14,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 12:25:14,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:25:14,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 12:25:14,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 12:25:14,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 12:25:14,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 12:25:14,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 12:25:14,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 12:25:14,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 12:25:14,488 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 12:25:14,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 12:25:14,489 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 12:25:14,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a [2023-02-15 12:25:14,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 12:25:14,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 12:25:14,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 12:25:14,730 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 12:25:14,730 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 12:25:14,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2023-02-15 12:25:15,874 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 12:25:16,076 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 12:25:16,076 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2023-02-15 12:25:16,082 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c37c0d9c/e296f010f6094d4298b278b8204cf149/FLAG5a594b649 [2023-02-15 12:25:16,098 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c37c0d9c/e296f010f6094d4298b278b8204cf149 [2023-02-15 12:25:16,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 12:25:16,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 12:25:16,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 12:25:16,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 12:25:16,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 12:25:16,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6181c0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16, skipping insertion in model container [2023-02-15 12:25:16,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 12:25:16,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:25:16,235 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/prodbin-ll_valuebound5.c[537,550] [2023-02-15 12:25:16,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:25:16,259 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 12:25:16,269 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/prodbin-ll_valuebound5.c[537,550] [2023-02-15 12:25:16,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:25:16,287 INFO L208 MainTranslator]: Completed translation [2023-02-15 12:25:16,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16 WrapperNode [2023-02-15 12:25:16,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 12:25:16,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 12:25:16,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 12:25:16,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 12:25:16,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,313 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-02-15 12:25:16,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 12:25:16,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 12:25:16,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 12:25:16,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 12:25:16,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,329 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 12:25:16,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 12:25:16,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 12:25:16,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 12:25:16,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16" (1/1) ... [2023-02-15 12:25:16,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:25:16,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:25:16,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 12:25:16,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 12:25:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 12:25:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 12:25:16,395 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 12:25:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 12:25:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 12:25:16,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 12:25:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 12:25:16,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 12:25:16,445 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 12:25:16,447 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 12:25:16,547 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 12:25:16,552 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 12:25:16,552 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 12:25:16,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:25:16 BoogieIcfgContainer [2023-02-15 12:25:16,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 12:25:16,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 12:25:16,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 12:25:16,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 12:25:16,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:25:16" (1/3) ... [2023-02-15 12:25:16,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c793a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:25:16, skipping insertion in model container [2023-02-15 12:25:16,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:25:16" (2/3) ... [2023-02-15 12:25:16,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c793a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:25:16, skipping insertion in model container [2023-02-15 12:25:16,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:25:16" (3/3) ... [2023-02-15 12:25:16,561 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound5.c [2023-02-15 12:25:16,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 12:25:16,578 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 12:25:16,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 12:25:16,623 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;@558d348f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 12:25:16,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 12:25:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 12:25:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 12:25:16,648 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:25:16,648 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:25:16,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:25:16,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:25:16,653 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times [2023-02-15 12:25:16,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:25:16,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007424764] [2023-02-15 12:25:16,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:16,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:25:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:25:16,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:25:16,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007424764] [2023-02-15 12:25:16,783 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 12:25:16,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656994003] [2023-02-15 12:25:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:16,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:25:16,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:25:16,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:25:16,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 12:25:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:25:16,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 12:25:16,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:25:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 12:25:16,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:25:16,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656994003] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:25:16,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:25:16,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 12:25:16,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235717091] [2023-02-15 12:25:16,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:25:16,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 12:25:16,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:25:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 12:25:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 12:25:16,976 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 12:25:17,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:25:17,022 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-02-15 12:25:17,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 12:25:17,024 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-02-15 12:25:17,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:25:17,047 INFO L225 Difference]: With dead ends: 51 [2023-02-15 12:25:17,049 INFO L226 Difference]: Without dead ends: 23 [2023-02-15 12:25:17,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 12:25:17,059 INFO L413 NwaCegarLoop]: 31 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, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:25:17,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:25:17,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-15 12:25:17,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-15 12:25:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 12:25:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-15 12:25:17,098 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2023-02-15 12:25:17,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:25:17,099 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-15 12:25:17,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 12:25:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-15 12:25:17,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 12:25:17,101 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:25:17,101 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:25:17,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 12:25:17,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 12:25:17,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:25:17,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:25:17,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times [2023-02-15 12:25:17,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:25:17,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365836297] [2023-02-15 12:25:17,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:17,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:25:17,322 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:25:17,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504544052] [2023-02-15 12:25:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:17,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:25:17,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:25:17,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:25:17,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 12:25:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:25:17,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 12:25:17,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:25:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 12:25:17,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:25:17,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:25:17,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365836297] [2023-02-15 12:25:17,480 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:25:17,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504544052] [2023-02-15 12:25:17,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504544052] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:25:17,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:25:17,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 12:25:17,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542141428] [2023-02-15 12:25:17,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:25:17,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 12:25:17,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:25:17,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 12:25:17,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:25:17,488 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 12:25:17,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:25:17,564 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2023-02-15 12:25:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 12:25:17,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-02-15 12:25:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:25:17,566 INFO L225 Difference]: With dead ends: 35 [2023-02-15 12:25:17,566 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 12:25:17,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 12:25:17,568 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:25:17,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:25:17,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 12:25:17,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2023-02-15 12:25:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 12:25:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-02-15 12:25:17,575 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2023-02-15 12:25:17,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:25:17,577 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-02-15 12:25:17,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 12:25:17,577 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-02-15 12:25:17,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 12:25:17,578 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:25:17,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:25:17,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 12:25:17,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 12:25:17,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:25:17,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:25:17,785 INFO L85 PathProgramCache]: Analyzing trace with hash -895979555, now seen corresponding path program 1 times [2023-02-15 12:25:17,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:25:17,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341920916] [2023-02-15 12:25:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:17,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:25:17,800 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:25:17,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28386582] [2023-02-15 12:25:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:17,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:25:17,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:25:17,802 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:25:17,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 12:25:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:25:17,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 12:25:17,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:25:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:25:17,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:25:17,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:25:17,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341920916] [2023-02-15 12:25:17,910 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:25:17,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28386582] [2023-02-15 12:25:17,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28386582] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:25:17,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:25:17,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 12:25:17,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027793825] [2023-02-15 12:25:17,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:25:17,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 12:25:17,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:25:17,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 12:25:17,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 12:25:17,912 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 12:25:17,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:25:17,971 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-02-15 12:25:17,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 12:25:17,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-02-15 12:25:17,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:25:17,973 INFO L225 Difference]: With dead ends: 39 [2023-02-15 12:25:17,973 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 12:25:17,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 12:25:17,974 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:25:17,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 69 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:25:17,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 12:25:17,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-02-15 12:25:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 12:25:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-02-15 12:25:17,981 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 30 [2023-02-15 12:25:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:25:17,982 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-02-15 12:25:17,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 12:25:17,982 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-02-15 12:25:17,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 12:25:17,983 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:25:17,983 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:25:17,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 12:25:18,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:25:18,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:25:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:25:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times [2023-02-15 12:25:18,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:25:18,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238291553] [2023-02-15 12:25:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:18,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:25:18,209 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:25:18,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019390290] [2023-02-15 12:25:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:18,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:25:18,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:25:18,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:25:18,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 12:25:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:25:18,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 12:25:18,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:25:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 12:25:18,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:25:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 12:25:22,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:25:22,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238291553] [2023-02-15 12:25:22,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:25:22,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019390290] [2023-02-15 12:25:22,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019390290] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 12:25:22,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 12:25:22,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-02-15 12:25:22,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814006884] [2023-02-15 12:25:22,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:25:22,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 12:25:22,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:25:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 12:25:22,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-02-15 12:25:22,531 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 12:25:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:25:22,948 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2023-02-15 12:25:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 12:25:22,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-02-15 12:25:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:25:22,950 INFO L225 Difference]: With dead ends: 43 [2023-02-15 12:25:22,950 INFO L226 Difference]: Without dead ends: 41 [2023-02-15 12:25:22,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-02-15 12:25:22,952 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 12:25:22,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 79 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 12:25:22,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-15 12:25:22,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2023-02-15 12:25:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 12:25:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2023-02-15 12:25:22,964 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 33 [2023-02-15 12:25:22,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:25:22,965 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2023-02-15 12:25:22,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 12:25:22,965 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2023-02-15 12:25:22,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 12:25:22,966 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:25:22,966 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:25:22,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 12:25:23,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:25:23,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:25:23,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:25:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash 403305007, now seen corresponding path program 1 times [2023-02-15 12:25:23,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:25:23,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691721015] [2023-02-15 12:25:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:23,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:25:23,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:25:23,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396777270] [2023-02-15 12:25:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:23,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:25:23,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:25:23,196 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) [2023-02-15 12:25:23,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 12:25:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:25:23,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 12:25:23,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:25:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:25:23,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:25:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:25:24,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:25:24,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691721015] [2023-02-15 12:25:24,019 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:25:24,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396777270] [2023-02-15 12:25:24,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396777270] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:25:24,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:25:24,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-02-15 12:25:24,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944166773] [2023-02-15 12:25:24,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:25:24,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 12:25:24,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:25:24,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 12:25:24,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-02-15 12:25:24,022 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 13 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-15 12:25:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:25:24,793 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2023-02-15 12:25:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 12:25:24,794 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 13 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2023-02-15 12:25:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:25:24,796 INFO L225 Difference]: With dead ends: 68 [2023-02-15 12:25:24,796 INFO L226 Difference]: Without dead ends: 61 [2023-02-15 12:25:24,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-02-15 12:25:24,797 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 12:25:24,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 120 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 12:25:24,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-15 12:25:24,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2023-02-15 12:25:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 43 states have (on average 1.255813953488372) internal successors, (54), 44 states have internal predecessors, (54), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 12:25:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2023-02-15 12:25:24,809 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 33 [2023-02-15 12:25:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:25:24,809 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2023-02-15 12:25:24,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 13 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-15 12:25:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2023-02-15 12:25:24,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 12:25:24,810 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:25:24,811 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:25:24,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 12:25:25,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:25:25,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:25:25,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:25:25,012 INFO L85 PathProgramCache]: Analyzing trace with hash 685673296, now seen corresponding path program 1 times [2023-02-15 12:25:25,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:25:25,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621004504] [2023-02-15 12:25:25,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:25,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:25:25,023 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:25:25,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033656464] [2023-02-15 12:25:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:25,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:25:25,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:25:25,026 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) [2023-02-15 12:25:25,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 12:25:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:25:25,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 12:25:25,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:25:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 12:25:25,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:25:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 12:25:25,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:25:25,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621004504] [2023-02-15 12:25:25,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:25:25,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033656464] [2023-02-15 12:25:25,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033656464] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:25:25,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:25:25,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-02-15 12:25:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837695020] [2023-02-15 12:25:25,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:25:25,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 12:25:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:25:25,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 12:25:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2023-02-15 12:25:25,775 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 12:25:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:25:25,917 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2023-02-15 12:25:25,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 12:25:25,918 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-02-15 12:25:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:25:25,919 INFO L225 Difference]: With dead ends: 67 [2023-02-15 12:25:25,919 INFO L226 Difference]: Without dead ends: 60 [2023-02-15 12:25:25,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=113, Unknown=1, NotChecked=0, Total=156 [2023-02-15 12:25:25,920 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:25:25,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 111 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:25:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-15 12:25:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-02-15 12:25:25,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 12:25:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2023-02-15 12:25:25,930 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 39 [2023-02-15 12:25:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:25:25,931 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2023-02-15 12:25:25,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 12:25:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2023-02-15 12:25:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-15 12:25:25,932 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:25:25,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:25:25,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 12:25:26,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:25:26,139 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:25:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:25:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash -662815268, now seen corresponding path program 1 times [2023-02-15 12:25:26,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:25:26,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235444126] [2023-02-15 12:25:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:26,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:25:26,151 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:25:26,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967654549] [2023-02-15 12:25:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:25:26,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:25:26,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:25:26,153 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) [2023-02-15 12:25:26,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 12:25:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:25:26,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-15 12:25:26,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:25:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 12:25:26,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:25:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 12:25:38,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:25:38,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235444126] [2023-02-15 12:25:38,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:25:38,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967654549] [2023-02-15 12:25:38,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967654549] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:25:38,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:25:38,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2023-02-15 12:25:38,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872447137] [2023-02-15 12:25:38,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:25:38,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 12:25:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:25:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 12:25:38,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=277, Unknown=5, NotChecked=0, Total=342 [2023-02-15 12:25:38,841 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 6 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-15 12:25:47,551 WARN L233 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 43 DAG size of output: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 12:25:51,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 12:25:57,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 12:26:01,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:26:01,878 INFO L93 Difference]: Finished difference Result 96 states and 115 transitions. [2023-02-15 12:26:01,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 12:26:01,879 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 6 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 42 [2023-02-15 12:26:01,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:26:01,881 INFO L225 Difference]: With dead ends: 96 [2023-02-15 12:26:01,881 INFO L226 Difference]: Without dead ends: 94 [2023-02-15 12:26:01,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=156, Invalid=651, Unknown=5, NotChecked=0, Total=812 [2023-02-15 12:26:01,882 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 27 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-02-15 12:26:01,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 170 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-02-15 12:26:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-15 12:26:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-02-15 12:26:01,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 12:26:01,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2023-02-15 12:26:01,906 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 42 [2023-02-15 12:26:01,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:26:01,906 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2023-02-15 12:26:01,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 6 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-15 12:26:01,907 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2023-02-15 12:26:01,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-15 12:26:01,908 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:26:01,909 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:26:01,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 12:26:02,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:26:02,114 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:26:02,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:26:02,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1448142086, now seen corresponding path program 2 times [2023-02-15 12:26:02,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:26:02,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407319067] [2023-02-15 12:26:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:26:02,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:26:02,125 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:26:02,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402261492] [2023-02-15 12:26:02,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:26:02,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:26:02,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:26:02,130 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) [2023-02-15 12:26:02,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 12:26:02,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:26:02,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:26:02,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 12:26:02,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:26:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 55 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 12:26:02,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:26:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-15 12:26:02,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:26:02,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407319067] [2023-02-15 12:26:02,791 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:26:02,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402261492] [2023-02-15 12:26:02,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402261492] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:26:02,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:26:02,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2023-02-15 12:26:02,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935211709] [2023-02-15 12:26:02,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:26:02,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 12:26:02,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:26:02,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 12:26:02,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-02-15 12:26:02,794 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 12:26:03,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:26:03,091 INFO L93 Difference]: Finished difference Result 137 states and 160 transitions. [2023-02-15 12:26:03,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 12:26:03,091 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 60 [2023-02-15 12:26:03,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:26:03,092 INFO L225 Difference]: With dead ends: 137 [2023-02-15 12:26:03,092 INFO L226 Difference]: Without dead ends: 80 [2023-02-15 12:26:03,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2023-02-15 12:26:03,094 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:26:03,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 96 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:26:03,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-15 12:26:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2023-02-15 12:26:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 60 states have internal predecessors, (60), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-15 12:26:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2023-02-15 12:26:03,106 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 60 [2023-02-15 12:26:03,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:26:03,106 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2023-02-15 12:26:03,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 12:26:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2023-02-15 12:26:03,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-15 12:26:03,108 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:26:03,108 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:26:03,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-15 12:26:03,313 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,SelfDestructingSolverStorable7 [2023-02-15 12:26:03,313 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:26:03,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:26:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash 743390522, now seen corresponding path program 2 times [2023-02-15 12:26:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:26:03,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554956157] [2023-02-15 12:26:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:26:03,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:26:03,323 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:26:03,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852781416] [2023-02-15 12:26:03,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:26:03,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:26:03,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:26:03,325 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) [2023-02-15 12:26:03,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 12:26:03,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:26:03,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:26:03,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 12:26:03,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:26:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 56 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-02-15 12:26:03,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:26:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-02-15 12:26:04,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:26:04,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554956157] [2023-02-15 12:26:04,097 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:26:04,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852781416] [2023-02-15 12:26:04,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852781416] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:26:04,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:26:04,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-02-15 12:26:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590144153] [2023-02-15 12:26:04,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:26:04,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 12:26:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:26:04,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 12:26:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-02-15 12:26:04,100 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2023-02-15 12:26:04,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:26:04,369 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2023-02-15 12:26:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 12:26:04,370 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) Word has length 60 [2023-02-15 12:26:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:26:04,370 INFO L225 Difference]: With dead ends: 86 [2023-02-15 12:26:04,370 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 12:26:04,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2023-02-15 12:26:04,372 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:26:04,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 129 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:26:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 12:26:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 12:26:04,373 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) [2023-02-15 12:26:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 12:26:04,373 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2023-02-15 12:26:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:26:04,374 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 12:26:04,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2023-02-15 12:26:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 12:26:04,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 12:26:04,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 12:26:04,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 12:26:04,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:26:04,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 12:26:05,761 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 12:26:05,762 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2023-02-15 12:26:05,762 INFO L895 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 5)) [2023-02-15 12:26:05,762 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-02-15 12:26:05,762 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-02-15 12:26:05,762 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-02-15 12:26:05,763 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 12:26:05,763 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 20 49) the Hoare annotation is: true [2023-02-15 12:26:05,763 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse3 (= |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|))) (.cse5 (= |ULTIMATE.start_main_~z~0#1| 0)) (.cse4 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (<= |ULTIMATE.start_main_~b~0#1| 5)) (.cse1 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)))) (or (and (= (div (+ (- 1) |ULTIMATE.start_main_~b~0#1|) 2) |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse2 .cse3) (and (= |ULTIMATE.start_main_~y~0#1| (div |ULTIMATE.start_main_~b~0#1| 2)) .cse3 (<= .cse4 5) .cse5 (<= 1 .cse4) (not (= (mod |ULTIMATE.start_main_~b~0#1| 2) 1))) (let ((.cse6 (+ |ULTIMATE.start_main_~y~0#1| 1))) (and (not (< .cse6 0)) (<= 1 (mod .cse6 2)) .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~y~0#1| 1))) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= .cse4 2) .cse0 .cse1 .cse2))) [2023-02-15 12:26:05,763 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 12:26:05,763 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~z~0#1| .cse0) (or (not (<= 1 (mod |ULTIMATE.start_main_~y~0#1| 2))) (< |ULTIMATE.start_main_~y~0#1| 0) (= (+ (* 2 (* (div (+ (- 1) |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0)))) [2023-02-15 12:26:05,764 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 12:26:05,764 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-02-15 12:26:05,764 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2023-02-15 12:26:05,764 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2023-02-15 12:26:05,764 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse3 (= |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|))) (.cse5 (= |ULTIMATE.start_main_~z~0#1| 0)) (.cse4 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (<= |ULTIMATE.start_main_~b~0#1| 5)) (.cse1 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)))) (or (and (= (div (+ (- 1) |ULTIMATE.start_main_~b~0#1|) 2) |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse2 .cse3) (and (= |ULTIMATE.start_main_~y~0#1| (div |ULTIMATE.start_main_~b~0#1| 2)) .cse3 (<= .cse4 5) .cse5 (<= 1 .cse4) (not (= (mod |ULTIMATE.start_main_~b~0#1| 2) 1))) (let ((.cse6 (+ |ULTIMATE.start_main_~y~0#1| 1))) (and (not (< .cse6 0)) (<= 1 (mod .cse6 2)) .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~y~0#1| 1))) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= .cse4 2) .cse0 .cse1 .cse2))) [2023-02-15 12:26:05,764 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed. [2023-02-15 12:26:05,764 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2023-02-15 12:26:05,764 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 11) the Hoare annotation is: true [2023-02-15 12:26:05,764 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2023-02-15 12:26:05,764 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2023-02-15 12:26:05,765 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2023-02-15 12:26:05,765 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2023-02-15 12:26:05,765 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2023-02-15 12:26:05,765 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2023-02-15 12:26:05,765 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 18) the Hoare annotation is: true [2023-02-15 12:26:05,765 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2023-02-15 12:26:05,767 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-02-15 12:26:05,769 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 12:26:05,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:26:05 BoogieIcfgContainer [2023-02-15 12:26:05,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 12:26:05,783 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 12:26:05,783 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 12:26:05,783 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 12:26:05,784 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:25:16" (3/4) ... [2023-02-15 12:26:05,786 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 12:26:05,791 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-15 12:26:05,791 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 12:26:05,794 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-15 12:26:05,794 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-15 12:26:05,795 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 12:26:05,795 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 12:26:05,821 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 12:26:05,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 12:26:05,822 INFO L158 Benchmark]: Toolchain (without parser) took 49719.32ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 83.2MB in the beginning and 107.2MB in the end (delta: -24.1MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2023-02-15 12:26:05,822 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 98.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 12:26:05,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.18ms. Allocated memory is still 127.9MB. Free memory was 82.9MB in the beginning and 72.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 12:26:05,823 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.19ms. Allocated memory is still 127.9MB. Free memory was 72.7MB in the beginning and 71.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 12:26:05,823 INFO L158 Benchmark]: Boogie Preprocessor took 17.81ms. Allocated memory is still 127.9MB. Free memory was 71.3MB in the beginning and 70.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 12:26:05,823 INFO L158 Benchmark]: RCFGBuilder took 221.42ms. Allocated memory is still 127.9MB. Free memory was 69.9MB in the beginning and 59.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 12:26:05,824 INFO L158 Benchmark]: TraceAbstraction took 49226.80ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 58.9MB in the beginning and 110.4MB in the end (delta: -51.5MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2023-02-15 12:26:05,824 INFO L158 Benchmark]: Witness Printer took 38.33ms. Allocated memory is still 157.3MB. Free memory was 110.4MB in the beginning and 107.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 12:26:05,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 98.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.18ms. Allocated memory is still 127.9MB. Free memory was 82.9MB in the beginning and 72.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.19ms. Allocated memory is still 127.9MB. Free memory was 72.7MB in the beginning and 71.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.81ms. Allocated memory is still 127.9MB. Free memory was 71.3MB in the beginning and 70.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 221.42ms. Allocated memory is still 127.9MB. Free memory was 69.9MB in the beginning and 59.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 49226.80ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 58.9MB in the beginning and 110.4MB in the end (delta: -51.5MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * Witness Printer took 38.33ms. Allocated memory is still 157.3MB. Free memory was 110.4MB in the beginning and 107.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 49.2s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 25.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 134 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 876 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 683 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1146 IncrementalHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 193 mSDtfsCounter, 1146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 639 GetRequests, 508 SyntacticMatches, 3 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 33.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=7, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 14 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 35 PreInvPairs, 53 NumberOfFragments, 309 HoareAnnotationTreeSize, 35 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 750 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 19.9s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 597 ConstructedInterpolants, 2 QuantifiedInterpolants, 3090 SizeOfPredicates, 32 NumberOfNonLiveVariables, 921 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 500/534 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: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((-1 + b) / 2 == y && b <= 5) && 1 <= b) && z + x * y == a * b) && x == 2 * a) || (((((y == b / 2 && x == 2 * a) && 2 * y <= 5) && z == 0) && 1 <= 2 * y) && !(b % 2 == 1))) || (((((!(y + 1 < 0) && 1 <= (y + 1) % 2) && b <= 5) && 1 <= b) && z + x * y == a * b) && y <= 1)) || ((((b == y && b <= 5) && 1 <= b) && z == 0) && a == x)) || ((((1 <= y && 2 * y <= 2) && b <= 5) && 1 <= b) && z + x * y == a * b) RESULT: Ultimate proved your program to be correct! [2023-02-15 12:26:05,855 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