./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.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/array-cav19/array_init_pair_symmetr2.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 4caa1f295436b297cae57f4102149db941e37f67b5d377cc8e9aa7b58bbf9350 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 09:52:07,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 09:52:07,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 09:52:07,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 09:52:07,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 09:52:07,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 09:52:07,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 09:52:07,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 09:52:07,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 09:52:07,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 09:52:07,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 09:52:07,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 09:52:07,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 09:52:07,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 09:52:07,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 09:52:07,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 09:52:07,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 09:52:07,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 09:52:07,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 09:52:07,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 09:52:07,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 09:52:07,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 09:52:07,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 09:52:07,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 09:52:07,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 09:52:07,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 09:52:07,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 09:52:07,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 09:52:07,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 09:52:07,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 09:52:07,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 09:52:07,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 09:52:07,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 09:52:07,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 09:52:07,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 09:52:07,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 09:52:07,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 09:52:07,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 09:52:07,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 09:52:07,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 09:52:07,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 09:52:07,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 09:52:07,717 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 09:52:07,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 09:52:07,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 09:52:07,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 09:52:07,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 09:52:07,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 09:52:07,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 09:52:07,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 09:52:07,719 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 09:52:07,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 09:52:07,720 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 09:52:07,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 09:52:07,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 09:52:07,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 09:52:07,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 09:52:07,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 09:52:07,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 09:52:07,721 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 09:52:07,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 09:52:07,721 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 09:52:07,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 09:52:07,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 09:52:07,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 09:52:07,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 09:52:07,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 09:52:07,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 09:52:07,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 09:52:07,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 09:52:07,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 09:52:07,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 09:52:07,723 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 09:52:07,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 09:52:07,723 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 09:52:07,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 09:52:07,724 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 09:52:07,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4caa1f295436b297cae57f4102149db941e37f67b5d377cc8e9aa7b58bbf9350 [2023-02-15 09:52:07,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 09:52:07,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 09:52:07,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 09:52:07,895 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 09:52:07,895 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 09:52:07,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2023-02-15 09:52:08,940 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 09:52:09,095 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 09:52:09,095 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2023-02-15 09:52:09,100 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacffc0ad/82abfa3559674851a018eac70dceb551/FLAGd2250e2c4 [2023-02-15 09:52:09,114 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacffc0ad/82abfa3559674851a018eac70dceb551 [2023-02-15 09:52:09,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 09:52:09,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 09:52:09,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 09:52:09,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 09:52:09,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 09:52:09,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505e5db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09, skipping insertion in model container [2023-02-15 09:52:09,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 09:52:09,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 09:52:09,254 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c[415,428] [2023-02-15 09:52:09,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 09:52:09,277 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 09:52:09,286 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-cav19/array_init_pair_symmetr2.c[415,428] [2023-02-15 09:52:09,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 09:52:09,308 INFO L208 MainTranslator]: Completed translation [2023-02-15 09:52:09,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09 WrapperNode [2023-02-15 09:52:09,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 09:52:09,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 09:52:09,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 09:52:09,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 09:52:09,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,340 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-02-15 09:52:09,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 09:52:09,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 09:52:09,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 09:52:09,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 09:52:09,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,369 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 09:52:09,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 09:52:09,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 09:52:09,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 09:52:09,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09" (1/1) ... [2023-02-15 09:52:09,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 09:52:09,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:52:09,408 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 09:52:09,426 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 09:52:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 09:52:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 09:52:09,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 09:52:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 09:52:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 09:52:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 09:52:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 09:52:09,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 09:52:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 09:52:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 09:52:09,490 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 09:52:09,491 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 09:52:09,637 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 09:52:09,641 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 09:52:09,641 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 09:52:09,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:52:09 BoogieIcfgContainer [2023-02-15 09:52:09,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 09:52:09,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 09:52:09,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 09:52:09,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 09:52:09,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 09:52:09" (1/3) ... [2023-02-15 09:52:09,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c7c2db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:52:09, skipping insertion in model container [2023-02-15 09:52:09,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:52:09" (2/3) ... [2023-02-15 09:52:09,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c7c2db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:52:09, skipping insertion in model container [2023-02-15 09:52:09,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:52:09" (3/3) ... [2023-02-15 09:52:09,663 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr2.c [2023-02-15 09:52:09,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 09:52:09,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 09:52:09,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 09:52:09,710 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;@17679592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 09:52:09,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 09:52:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 09:52:09,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 09:52:09,717 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:52:09,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:52:09,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:52:09,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:52:09,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1607472667, now seen corresponding path program 1 times [2023-02-15 09:52:09,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:52:09,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099762976] [2023-02-15 09:52:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:52:09,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:52:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:52:09,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:52:09,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099762976] [2023-02-15 09:52:09,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099762976] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 09:52:09,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 09:52:09,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 09:52:09,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845406086] [2023-02-15 09:52:09,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 09:52:09,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 09:52:09,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:52:09,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 09:52:09,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 09:52:09,940 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 09:52:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:52:09,957 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2023-02-15 09:52:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 09:52:09,959 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2023-02-15 09:52:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:52:09,963 INFO L225 Difference]: With dead ends: 50 [2023-02-15 09:52:09,963 INFO L226 Difference]: Without dead ends: 22 [2023-02-15 09:52:09,965 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 [2023-02-15 09:52:09,972 INFO L413 NwaCegarLoop]: 30 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, 30 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 09:52:09,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 09:52:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-15 09:52:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-15 09:52:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 09:52:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-02-15 09:52:09,997 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 9 [2023-02-15 09:52:09,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:52:09,997 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-02-15 09:52:09,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 09:52:09,998 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-02-15 09:52:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 09:52:09,998 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:52:09,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:52:09,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 09:52:09,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:52:10,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:52:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1898116011, now seen corresponding path program 1 times [2023-02-15 09:52:10,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:52:10,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697963031] [2023-02-15 09:52:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:52:10,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:52:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:52:10,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:52:10,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697963031] [2023-02-15 09:52:10,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697963031] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 09:52:10,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 09:52:10,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 09:52:10,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440481977] [2023-02-15 09:52:10,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 09:52:10,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 09:52:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:52:10,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 09:52:10,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 09:52:10,140 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 09:52:10,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:52:10,204 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-02-15 09:52:10,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 09:52:10,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-02-15 09:52:10,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:52:10,205 INFO L225 Difference]: With dead ends: 40 [2023-02-15 09:52:10,205 INFO L226 Difference]: Without dead ends: 30 [2023-02-15 09:52:10,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 09:52:10,209 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 09:52:10,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 24 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 09:52:10,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-15 09:52:10,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2023-02-15 09:52:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 09:52:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-02-15 09:52:10,226 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2023-02-15 09:52:10,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:52:10,226 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-02-15 09:52:10,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 09:52:10,227 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-02-15 09:52:10,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 09:52:10,228 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:52:10,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:52:10,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 09:52:10,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:52:10,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:52:10,237 INFO L85 PathProgramCache]: Analyzing trace with hash 544146986, now seen corresponding path program 1 times [2023-02-15 09:52:10,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:52:10,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263687286] [2023-02-15 09:52:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:52:10,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:52:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 09:52:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 09:52:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 09:52:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 09:52:10,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:52:10,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263687286] [2023-02-15 09:52:10,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263687286] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:52:10,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595718998] [2023-02-15 09:52:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:52:10,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:52:10,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:52:10,439 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 09:52:10,473 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 09:52:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:10,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 09:52:10,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:52:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 09:52:10,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:52:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 09:52:10,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595718998] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:52:10,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:52:10,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10 [2023-02-15 09:52:10,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613758977] [2023-02-15 09:52:10,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:52:10,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 09:52:10,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:52:10,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 09:52:10,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-02-15 09:52:10,673 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-15 09:52:10,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:52:10,802 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2023-02-15 09:52:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 09:52:10,803 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 29 [2023-02-15 09:52:10,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:52:10,804 INFO L225 Difference]: With dead ends: 72 [2023-02-15 09:52:10,805 INFO L226 Difference]: Without dead ends: 61 [2023-02-15 09:52:10,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-02-15 09:52:10,807 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 134 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:52:10,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 38 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 09:52:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-15 09:52:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2023-02-15 09:52:10,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-15 09:52:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2023-02-15 09:52:10,823 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 29 [2023-02-15 09:52:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:52:10,823 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2023-02-15 09:52:10,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-15 09:52:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2023-02-15 09:52:10,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-15 09:52:10,827 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:52:10,827 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:52:10,832 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 09:52:11,031 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 [2023-02-15 09:52:11,032 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:52:11,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:52:11,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1645511465, now seen corresponding path program 2 times [2023-02-15 09:52:11,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:52:11,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923004294] [2023-02-15 09:52:11,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:52:11,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:52:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 09:52:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 09:52:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 09:52:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-15 09:52:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-15 09:52:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-15 09:52:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-15 09:52:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-15 09:52:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-15 09:52:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-02-15 09:52:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-15 09:52:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-02-15 09:52:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-02-15 09:52:11,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:52:11,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923004294] [2023-02-15 09:52:11,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923004294] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:52:11,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145380176] [2023-02-15 09:52:11,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 09:52:11,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:52:11,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:52:11,282 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 09:52:11,283 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 09:52:11,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 09:52:11,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:52:11,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 09:52:11,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:52:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-02-15 09:52:11,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:52:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-02-15 09:52:11,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145380176] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:52:11,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:52:11,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2023-02-15 09:52:11,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025195221] [2023-02-15 09:52:11,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:52:11,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 09:52:11,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:52:11,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 09:52:11,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2023-02-15 09:52:11,599 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-02-15 09:52:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:52:11,843 INFO L93 Difference]: Finished difference Result 162 states and 206 transitions. [2023-02-15 09:52:11,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 09:52:11,844 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 89 [2023-02-15 09:52:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:52:11,845 INFO L225 Difference]: With dead ends: 162 [2023-02-15 09:52:11,845 INFO L226 Difference]: Without dead ends: 145 [2023-02-15 09:52:11,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2023-02-15 09:52:11,846 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 282 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 09:52:11,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 63 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 09:52:11,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-15 09:52:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2023-02-15 09:52:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-02-15 09:52:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2023-02-15 09:52:11,857 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 89 [2023-02-15 09:52:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:52:11,857 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2023-02-15 09:52:11,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-02-15 09:52:11,857 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2023-02-15 09:52:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-02-15 09:52:11,859 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:52:11,859 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:52:11,873 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 09:52:12,064 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 [2023-02-15 09:52:12,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:52:12,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:52:12,065 INFO L85 PathProgramCache]: Analyzing trace with hash 548463335, now seen corresponding path program 3 times [2023-02-15 09:52:12,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:52:12,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979237362] [2023-02-15 09:52:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:52:12,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:52:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 09:52:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 09:52:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 09:52:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-15 09:52:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-15 09:52:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-15 09:52:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-15 09:52:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-15 09:52:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-15 09:52:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-02-15 09:52:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-15 09:52:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-02-15 09:52:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-02-15 09:52:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-02-15 09:52:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-02-15 09:52:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-02-15 09:52:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-02-15 09:52:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-02-15 09:52:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-02-15 09:52:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-02-15 09:52:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-02-15 09:52:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-02-15 09:52:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-02-15 09:52:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-02-15 09:52:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-02-15 09:52:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-02-15 09:52:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-15 09:52:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-02-15 09:52:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-02-15 09:52:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-02-15 09:52:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2023-02-15 09:52:12,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:52:12,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979237362] [2023-02-15 09:52:12,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979237362] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:52:12,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462217043] [2023-02-15 09:52:12,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 09:52:12,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:52:12,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:52:12,522 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 09:52:12,524 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 09:52:12,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 09:52:12,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:52:12,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 09:52:12,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:52:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2023-02-15 09:52:13,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:52:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2023-02-15 09:52:13,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462217043] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:52:13,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:52:13,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 37 [2023-02-15 09:52:13,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835796851] [2023-02-15 09:52:13,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:52:13,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-15 09:52:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:52:13,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-15 09:52:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2023-02-15 09:52:13,561 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand has 37 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 37 states have internal predecessors, (102), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-02-15 09:52:14,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:52:14,199 INFO L93 Difference]: Finished difference Result 342 states and 434 transitions. [2023-02-15 09:52:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 09:52:14,201 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 37 states have internal predecessors, (102), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 209 [2023-02-15 09:52:14,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:52:14,210 INFO L225 Difference]: With dead ends: 342 [2023-02-15 09:52:14,210 INFO L226 Difference]: Without dead ends: 313 [2023-02-15 09:52:14,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2023-02-15 09:52:14,211 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 634 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 09:52:14,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 131 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 09:52:14,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-02-15 09:52:14,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 192. [2023-02-15 09:52:14,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 124 states have (on average 1.0241935483870968) internal successors, (127), 124 states have internal predecessors, (127), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-02-15 09:52:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 259 transitions. [2023-02-15 09:52:14,241 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 259 transitions. Word has length 209 [2023-02-15 09:52:14,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:52:14,242 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 259 transitions. [2023-02-15 09:52:14,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 37 states have internal predecessors, (102), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-02-15 09:52:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 259 transitions. [2023-02-15 09:52:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2023-02-15 09:52:14,246 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:52:14,247 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:52:14,253 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 09:52:14,453 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 [2023-02-15 09:52:14,453 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:52:14,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:52:14,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1915094685, now seen corresponding path program 4 times [2023-02-15 09:52:14,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:52:14,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706154553] [2023-02-15 09:52:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:52:14,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:52:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 09:52:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 09:52:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 09:52:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-15 09:52:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-15 09:52:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-15 09:52:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-15 09:52:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-15 09:52:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-15 09:52:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-02-15 09:52:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-15 09:52:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-02-15 09:52:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-02-15 09:52:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-02-15 09:52:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-02-15 09:52:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-02-15 09:52:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-02-15 09:52:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-02-15 09:52:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-02-15 09:52:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-02-15 09:52:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-02-15 09:52:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-02-15 09:52:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-02-15 09:52:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-02-15 09:52:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-02-15 09:52:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-02-15 09:52:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-15 09:52:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-02-15 09:52:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-02-15 09:52:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-02-15 09:52:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-02-15 09:52:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-02-15 09:52:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-02-15 09:52:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-02-15 09:52:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-02-15 09:52:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-02-15 09:52:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-02-15 09:52:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-02-15 09:52:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-02-15 09:52:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-02-15 09:52:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-02-15 09:52:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-02-15 09:52:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-02-15 09:52:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-02-15 09:52:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-02-15 09:52:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2023-02-15 09:52:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-02-15 09:52:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-02-15 09:52:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-02-15 09:52:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-02-15 09:52:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-02-15 09:52:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-02-15 09:52:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-02-15 09:52:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-02-15 09:52:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-02-15 09:52:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2023-02-15 09:52:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-02-15 09:52:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2023-02-15 09:52:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2023-02-15 09:52:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2023-02-15 09:52:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2023-02-15 09:52:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2023-02-15 09:52:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2023-02-15 09:52:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2023-02-15 09:52:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2023-02-15 09:52:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2023-02-15 09:52:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:52:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10472 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 9064 trivial. 0 not checked. [2023-02-15 09:52:15,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:52:15,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706154553] [2023-02-15 09:52:15,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706154553] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:52:15,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039305480] [2023-02-15 09:52:15,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 09:52:15,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:52:15,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:52:15,596 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 09:52:15,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process