./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sina5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/sina5.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 503513a726b63dcf7252b591818901fbaab844b1443a8550e123aa98a06238f6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:36:01,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:36:01,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:36:01,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:36:01,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:36:01,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:36:01,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:36:01,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:36:01,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:36:01,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:36:01,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:36:01,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:36:01,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:36:01,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:36:01,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:36:01,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:36:01,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:36:01,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:36:01,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:36:01,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:36:01,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:36:01,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:36:01,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:36:01,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:36:01,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:36:01,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:36:01,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:36:01,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:36:01,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:36:01,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:36:01,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:36:01,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:36:01,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:36:01,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:36:01,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:36:01,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:36:01,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:36:01,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:36:01,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:36:01,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:36:01,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:36:01,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:36:01,479 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:36:01,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:36:01,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:36:01,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:36:01,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:36:01,480 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:36:01,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:36:01,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:36:01,481 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:36:01,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:36:01,482 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:36:01,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:36:01,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:36:01,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:36:01,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:36:01,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:36:01,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:36:01,482 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:36:01,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:36:01,483 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:36:01,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:36:01,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:36:01,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:36:01,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:36:01,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:36:01,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:36:01,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:36:01,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:36:01,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:36:01,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:36:01,484 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:36:01,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:36:01,485 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:36:01,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:36:01,485 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:36:01,486 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503513a726b63dcf7252b591818901fbaab844b1443a8550e123aa98a06238f6 [2023-02-16 00:36:01,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:36:01,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:36:01,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:36:01,701 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:36:01,701 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:36:01,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sina5.c [2023-02-16 00:36:02,624 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:36:02,785 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:36:02,785 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina5.c [2023-02-16 00:36:02,790 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1ec2167/25737ef49dbe4f6aa15741e65b84e0bc/FLAG54dc94a57 [2023-02-16 00:36:02,801 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1ec2167/25737ef49dbe4f6aa15741e65b84e0bc [2023-02-16 00:36:02,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:36:02,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:36:02,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:36:02,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:36:02,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:36:02,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:36:02" (1/1) ... [2023-02-16 00:36:02,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df37b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:02, skipping insertion in model container [2023-02-16 00:36:02,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:36:02" (1/1) ... [2023-02-16 00:36:02,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:36:02,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:36:02,941 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/array-fpi/sina5.c[588,601] [2023-02-16 00:36:02,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:36:02,971 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:36:02,979 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/array-fpi/sina5.c[588,601] [2023-02-16 00:36:02,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:36:03,005 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:36:03,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03 WrapperNode [2023-02-16 00:36:03,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:36:03,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:36:03,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:36:03,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:36:03,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03" (1/1) ... [2023-02-16 00:36:03,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03" (1/1) ... [2023-02-16 00:36:03,056 INFO L138 Inliner]: procedures = 17, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 117 [2023-02-16 00:36:03,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:36:03,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:36:03,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:36:03,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:36:03,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03" (1/1) ... [2023-02-16 00:36:03,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03" (1/1) ... [2023-02-16 00:36:03,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03" (1/1) ... [2023-02-16 00:36:03,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03" (1/1) ... [2023-02-16 00:36:03,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03" (1/1) ... [2023-02-16 00:36:03,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03" (1/1) ... [2023-02-16 00:36:03,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03" (1/1) ... [2023-02-16 00:36:03,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03" (1/1) ... [2023-02-16 00:36:03,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:36:03,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:36:03,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:36:03,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:36:03,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03" (1/1) ... [2023-02-16 00:36:03,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:36:03,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:36:03,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 00:36:03,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 00:36:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:36:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:36:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 00:36:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 00:36:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 00:36:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:36:03,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:36:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 00:36:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 00:36:03,193 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:36:03,194 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:36:03,299 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:36:03,303 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:36:03,303 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2023-02-16 00:36:03,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:36:03 BoogieIcfgContainer [2023-02-16 00:36:03,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:36:03,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:36:03,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:36:03,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:36:03,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:36:02" (1/3) ... [2023-02-16 00:36:03,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e0f9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:36:03, skipping insertion in model container [2023-02-16 00:36:03,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:36:03" (2/3) ... [2023-02-16 00:36:03,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e0f9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:36:03, skipping insertion in model container [2023-02-16 00:36:03,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:36:03" (3/3) ... [2023-02-16 00:36:03,318 INFO L112 eAbstractionObserver]: Analyzing ICFG sina5.c [2023-02-16 00:36:03,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:36:03,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 00:36:03,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:36:03,401 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;@4c23ff6f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:36:03,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 00:36:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 00:36:03,411 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:36:03,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:36:03,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:36:03,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:36:03,415 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2023-02-16 00:36:03,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:36:03,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215157817] [2023-02-16 00:36:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:36:03,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:36:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:36:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:36:03,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:36:03,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215157817] [2023-02-16 00:36:03,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215157817] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:36:03,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:36:03,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 00:36:03,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883918707] [2023-02-16 00:36:03,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:36:03,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 00:36:03,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:36:03,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 00:36:03,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:36:03,542 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 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) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:03,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:36:03,558 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2023-02-16 00:36:03,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 00:36:03,560 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) Word has length 18 [2023-02-16 00:36:03,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:36:03,564 INFO L225 Difference]: With dead ends: 56 [2023-02-16 00:36:03,564 INFO L226 Difference]: Without dead ends: 26 [2023-02-16 00:36:03,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:36:03,568 INFO L413 NwaCegarLoop]: 36 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, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:36:03,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:36:03,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-16 00:36:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-16 00:36:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:03,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-02-16 00:36:03,587 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2023-02-16 00:36:03,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:36:03,588 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-02-16 00:36:03,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:03,588 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-02-16 00:36:03,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 00:36:03,589 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:36:03,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:36:03,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 00:36:03,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:36:03,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:36:03,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2023-02-16 00:36:03,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:36:03,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559749627] [2023-02-16 00:36:03,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:36:03,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:36:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:36:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:36:03,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:36:03,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559749627] [2023-02-16 00:36:03,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559749627] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:36:03,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:36:03,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:36:03,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785505569] [2023-02-16 00:36:03,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:36:03,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:36:03,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:36:03,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:36:03,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:36:03,743 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:03,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:36:03,800 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2023-02-16 00:36:03,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:36:03,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) Word has length 18 [2023-02-16 00:36:03,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:36:03,801 INFO L225 Difference]: With dead ends: 61 [2023-02-16 00:36:03,801 INFO L226 Difference]: Without dead ends: 42 [2023-02-16 00:36:03,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:36:03,802 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 52 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:36:03,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 18 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:36:03,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-16 00:36:03,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2023-02-16 00:36:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:03,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-02-16 00:36:03,810 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2023-02-16 00:36:03,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:36:03,810 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-02-16 00:36:03,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:03,811 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-02-16 00:36:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 00:36:03,811 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:36:03,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:36:03,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 00:36:03,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:36:03,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:36:03,812 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2023-02-16 00:36:03,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:36:03,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977845836] [2023-02-16 00:36:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:36:03,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:36:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:36:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:36:05,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:36:05,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977845836] [2023-02-16 00:36:05,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977845836] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:36:05,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825027064] [2023-02-16 00:36:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:36:05,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:36:05,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:36:05,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:36:05,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 00:36:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:36:05,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 69 conjunts are in the unsatisfiable core [2023-02-16 00:36:05,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:36:05,848 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-16 00:36:05,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-02-16 00:36:05,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 00:36:05,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-16 00:36:06,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-02-16 00:36:06,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2023-02-16 00:36:06,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2023-02-16 00:36:06,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2023-02-16 00:36:06,702 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 00:36:06,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 40 [2023-02-16 00:36:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:36:06,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:36:07,424 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:36:07,425 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:36:07,425 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:36:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:36:07,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825027064] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:36:07,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:36:07,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 43 [2023-02-16 00:36:07,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128559056] [2023-02-16 00:36:07,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:36:07,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-16 00:36:07,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:36:07,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-16 00:36:07,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1573, Unknown=0, NotChecked=0, Total=1806 [2023-02-16 00:36:07,460 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 43 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:36:09,676 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2023-02-16 00:36:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-16 00:36:09,676 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 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) Word has length 28 [2023-02-16 00:36:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:36:09,677 INFO L225 Difference]: With dead ends: 75 [2023-02-16 00:36:09,677 INFO L226 Difference]: Without dead ends: 73 [2023-02-16 00:36:09,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 26 SyntacticMatches, 8 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=632, Invalid=4060, Unknown=0, NotChecked=0, Total=4692 [2023-02-16 00:36:09,679 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 250 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 00:36:09,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 164 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 00:36:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-16 00:36:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2023-02-16 00:36:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 53 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2023-02-16 00:36:09,712 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 28 [2023-02-16 00:36:09,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:36:09,712 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2023-02-16 00:36:09,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2023-02-16 00:36:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-16 00:36:09,715 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:36:09,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:36:09,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 00:36:09,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:36:09,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:36:09,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:36:09,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1642466588, now seen corresponding path program 2 times [2023-02-16 00:36:09,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:36:09,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589356217] [2023-02-16 00:36:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:36:09,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:36:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:36:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:36:09,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:36:09,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589356217] [2023-02-16 00:36:09,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589356217] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:36:09,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381913637] [2023-02-16 00:36:09,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:36:09,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:36:09,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:36:09,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:36:09,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 00:36:10,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:36:10,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:36:10,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:36:10,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:36:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:36:10,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:36:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:36:10,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381913637] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:36:10,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:36:10,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-02-16 00:36:10,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510037559] [2023-02-16 00:36:10,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:36:10,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 00:36:10,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:36:10,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 00:36:10,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-02-16 00:36:10,112 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:36:10,241 INFO L93 Difference]: Finished difference Result 136 states and 161 transitions. [2023-02-16 00:36:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:36:10,242 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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) Word has length 30 [2023-02-16 00:36:10,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:36:10,243 INFO L225 Difference]: With dead ends: 136 [2023-02-16 00:36:10,243 INFO L226 Difference]: Without dead ends: 78 [2023-02-16 00:36:10,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-02-16 00:36:10,244 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 88 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:36:10,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 45 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:36:10,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-02-16 00:36:10,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2023-02-16 00:36:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2023-02-16 00:36:10,259 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 30 [2023-02-16 00:36:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:36:10,260 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2023-02-16 00:36:10,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:10,260 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2023-02-16 00:36:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-16 00:36:10,261 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:36:10,261 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:36:10,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 00:36:10,465 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,SelfDestructingSolverStorable3 [2023-02-16 00:36:10,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:36:10,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:36:10,466 INFO L85 PathProgramCache]: Analyzing trace with hash -396360796, now seen corresponding path program 3 times [2023-02-16 00:36:10,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:36:10,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222241694] [2023-02-16 00:36:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:36:10,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:36:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:36:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:36:10,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:36:10,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222241694] [2023-02-16 00:36:10,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222241694] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:36:10,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734531827] [2023-02-16 00:36:10,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 00:36:10,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:36:10,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:36:10,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:36:10,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 00:36:10,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-16 00:36:10,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:36:10,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:36:10,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:36:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:36:10,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:36:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:36:10,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734531827] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:36:10,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:36:10,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-02-16 00:36:10,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706995403] [2023-02-16 00:36:10,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:36:10,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 00:36:10,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:36:10,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 00:36:10,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-02-16 00:36:10,664 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:10,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:36:10,791 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2023-02-16 00:36:10,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:36:10,791 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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) Word has length 30 [2023-02-16 00:36:10,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:36:10,792 INFO L225 Difference]: With dead ends: 74 [2023-02-16 00:36:10,792 INFO L226 Difference]: Without dead ends: 57 [2023-02-16 00:36:10,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-02-16 00:36:10,793 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 110 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:36:10,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 44 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:36:10,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-16 00:36:10,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2023-02-16 00:36:10,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2023-02-16 00:36:10,799 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2023-02-16 00:36:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:36:10,799 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2023-02-16 00:36:10,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2023-02-16 00:36:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-16 00:36:10,800 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:36:10,800 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:36:10,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 00:36:11,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:36:11,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:36:11,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:36:11,022 INFO L85 PathProgramCache]: Analyzing trace with hash 389318684, now seen corresponding path program 4 times [2023-02-16 00:36:11,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:36:11,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873818815] [2023-02-16 00:36:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:36:11,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:36:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:36:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:36:13,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:36:13,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873818815] [2023-02-16 00:36:13,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873818815] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:36:13,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147991593] [2023-02-16 00:36:13,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 00:36:13,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:36:13,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:36:13,977 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:36:13,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 00:36:14,047 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 00:36:14,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:36:14,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 94 conjunts are in the unsatisfiable core [2023-02-16 00:36:14,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:36:14,062 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-16 00:36:14,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-02-16 00:36:14,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 00:36:14,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-16 00:36:14,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2023-02-16 00:36:14,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2023-02-16 00:36:14,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:36:14,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 61 [2023-02-16 00:36:15,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:36:15,001 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:36:15,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:36:15,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2023-02-16 00:36:15,182 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:36:15,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:36:15,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 64 [2023-02-16 00:36:15,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:36:15,412 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:36:15,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2023-02-16 00:36:15,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2023-02-16 00:36:15,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:36:15,806 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:36:15,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 64 [2023-02-16 00:36:15,981 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:36:15,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 60 [2023-02-16 00:36:16,215 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:36:16,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 37 [2023-02-16 00:36:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:36:16,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:36:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:36:21,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147991593] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:36:21,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:36:21,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28, 28] total 81 [2023-02-16 00:36:21,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626683548] [2023-02-16 00:36:21,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:36:21,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-02-16 00:36:21,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:36:21,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-02-16 00:36:21,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=5835, Unknown=0, NotChecked=0, Total=6480 [2023-02-16 00:36:21,278 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 81 states, 81 states have (on average 1.271604938271605) internal successors, (103), 81 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:36:32,530 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 167 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:37:34,499 WARN L233 SmtUtils]: Spent 37.96s on a formula simplification that was a NOOP. DAG size: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:37:53,462 WARN L233 SmtUtils]: Spent 11.52s on a formula simplification that was a NOOP. DAG size: 196 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:37:55,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:37:59,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:38:20,212 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification that was a NOOP. DAG size: 186 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:38:36,106 WARN L233 SmtUtils]: Spent 7.01s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:39:22,836 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)