./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 e8d55036 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-?-e8d5503-m [2023-02-15 18:51:11,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 18:51:11,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 18:51:11,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 18:51:11,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 18:51:11,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 18:51:11,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 18:51:11,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 18:51:11,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 18:51:11,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 18:51:11,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 18:51:11,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 18:51:11,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 18:51:11,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 18:51:11,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 18:51:11,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 18:51:11,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 18:51:11,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 18:51:11,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 18:51:11,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 18:51:11,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 18:51:11,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 18:51:11,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 18:51:11,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 18:51:11,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 18:51:11,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 18:51:11,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 18:51:11,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 18:51:11,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 18:51:11,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 18:51:11,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 18:51:11,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 18:51:11,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 18:51:11,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 18:51:11,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 18:51:11,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 18:51:11,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 18:51:11,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 18:51:11,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 18:51:11,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 18:51:11,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 18:51:11,888 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 18:51:11,913 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 18:51:11,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 18:51:11,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 18:51:11,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 18:51:11,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 18:51:11,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 18:51:11,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 18:51:11,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 18:51:11,915 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 18:51:11,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 18:51:11,916 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 18:51:11,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 18:51:11,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 18:51:11,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 18:51:11,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 18:51:11,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 18:51:11,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 18:51:11,917 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 18:51:11,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 18:51:11,918 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 18:51:11,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 18:51:11,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 18:51:11,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 18:51:11,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 18:51:11,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 18:51:11,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 18:51:11,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 18:51:11,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 18:51:11,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 18:51:11,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 18:51:11,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 18:51:11,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 18:51:11,920 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 18:51:11,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 18:51:11,920 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 18:51:11,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4caa1f295436b297cae57f4102149db941e37f67b5d377cc8e9aa7b58bbf9350 [2023-02-15 18:51:12,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 18:51:12,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 18:51:12,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 18:51:12,120 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 18:51:12,120 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 18:51:12,121 INFO L432 ainManager$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 18:51:13,158 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 18:51:13,289 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 18:51:13,289 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2023-02-15 18:51:13,293 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1139244ab/31b21e64850745ef9d95f17a0f3b58ec/FLAG16d2a65b5 [2023-02-15 18:51:13,312 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1139244ab/31b21e64850745ef9d95f17a0f3b58ec [2023-02-15 18:51:13,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 18:51:13,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 18:51:13,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 18:51:13,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 18:51:13,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 18:51:13,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f28269f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13, skipping insertion in model container [2023-02-15 18:51:13,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 18:51:13,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 18:51:13,438 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 18:51:13,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 18:51:13,454 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 18:51:13,462 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 18:51:13,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 18:51:13,476 INFO L208 MainTranslator]: Completed translation [2023-02-15 18:51:13,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13 WrapperNode [2023-02-15 18:51:13,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 18:51:13,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 18:51:13,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 18:51:13,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 18:51:13,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,498 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-02-15 18:51:13,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 18:51:13,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 18:51:13,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 18:51:13,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 18:51:13,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,514 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 18:51:13,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 18:51:13,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 18:51:13,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 18:51:13,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13" (1/1) ... [2023-02-15 18:51:13,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 18:51:13,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:51:13,557 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 18:51:13,562 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 18:51:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 18:51:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 18:51:13,588 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 18:51:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 18:51:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 18:51:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 18:51:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 18:51:13,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 18:51:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 18:51:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 18:51:13,666 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 18:51:13,668 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 18:51:13,864 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 18:51:13,869 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 18:51:13,869 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 18:51:13,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 06:51:13 BoogieIcfgContainer [2023-02-15 18:51:13,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 18:51:13,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 18:51:13,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 18:51:13,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 18:51:13,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 06:51:13" (1/3) ... [2023-02-15 18:51:13,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7aa015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 06:51:13, skipping insertion in model container [2023-02-15 18:51:13,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:51:13" (2/3) ... [2023-02-15 18:51:13,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7aa015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 06:51:13, skipping insertion in model container [2023-02-15 18:51:13,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 06:51:13" (3/3) ... [2023-02-15 18:51:13,886 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr2.c [2023-02-15 18:51:13,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 18:51:13,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 18:51:13,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 18:51:13,936 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;@158549d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 18:51:13,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 18:51:13,961 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 18:51:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 18:51:13,968 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:51:13,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:51:13,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:51:13,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:51:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1607472667, now seen corresponding path program 1 times [2023-02-15 18:51:13,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:51:13,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315132662] [2023-02-15 18:51:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:51:13,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:51:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:14,134 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 18:51:14,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:51:14,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315132662] [2023-02-15 18:51:14,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315132662] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:51:14,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:51:14,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 18:51:14,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749275212] [2023-02-15 18:51:14,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:51:14,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 18:51:14,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:51:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 18:51:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 18:51:14,169 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 18:51:14,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:51:14,182 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2023-02-15 18:51:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 18:51:14,183 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 18:51:14,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:51:14,187 INFO L225 Difference]: With dead ends: 50 [2023-02-15 18:51:14,187 INFO L226 Difference]: Without dead ends: 22 [2023-02-15 18:51:14,189 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 18:51:14,192 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 18:51:14,192 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 18:51:14,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-15 18:51:14,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-15 18:51:14,212 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 18:51:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-02-15 18:51:14,214 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 9 [2023-02-15 18:51:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:51:14,214 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-02-15 18:51:14,214 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 18:51:14,215 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-02-15 18:51:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 18:51:14,215 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:51:14,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:51:14,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 18:51:14,216 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:51:14,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:51:14,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1898116011, now seen corresponding path program 1 times [2023-02-15 18:51:14,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:51:14,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686495357] [2023-02-15 18:51:14,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:51:14,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:51:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:14,360 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 18:51:14,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:51:14,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686495357] [2023-02-15 18:51:14,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686495357] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:51:14,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:51:14,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 18:51:14,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980167383] [2023-02-15 18:51:14,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:51:14,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 18:51:14,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:51:14,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 18:51:14,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 18:51:14,363 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 18:51:14,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:51:14,411 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-02-15 18:51:14,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 18:51:14,411 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 18:51:14,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:51:14,412 INFO L225 Difference]: With dead ends: 40 [2023-02-15 18:51:14,412 INFO L226 Difference]: Without dead ends: 30 [2023-02-15 18:51:14,412 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 18:51:14,413 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 18:51:14,414 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 18:51:14,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-15 18:51:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2023-02-15 18:51:14,419 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 18:51:14,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-02-15 18:51:14,420 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2023-02-15 18:51:14,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:51:14,420 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-02-15 18:51:14,420 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 18:51:14,420 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-02-15 18:51:14,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 18:51:14,421 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:51:14,421 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 18:51:14,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 18:51:14,422 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:51:14,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:51:14,422 INFO L85 PathProgramCache]: Analyzing trace with hash 544146986, now seen corresponding path program 1 times [2023-02-15 18:51:14,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:51:14,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23933519] [2023-02-15 18:51:14,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:51:14,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:51:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 18:51:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 18:51:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:14,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 18:51:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:14,530 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 18:51:14,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:51:14,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23933519] [2023-02-15 18:51:14,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23933519] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:51:14,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881915714] [2023-02-15 18:51:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:51:14,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:51:14,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:51:14,534 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 18:51:14,535 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 18:51:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:14,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 18:51:14,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:51:14,737 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 18:51:14,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:51:14,801 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 18:51:14,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881915714] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:51:14,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 18:51:14,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10 [2023-02-15 18:51:14,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933608487] [2023-02-15 18:51:14,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 18:51:14,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 18:51:14,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:51:14,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 18:51:14,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-02-15 18:51:14,810 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 18:51:14,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:51:14,962 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2023-02-15 18:51:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 18:51:14,963 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 18:51:14,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:51:14,966 INFO L225 Difference]: With dead ends: 72 [2023-02-15 18:51:14,966 INFO L226 Difference]: Without dead ends: 61 [2023-02-15 18:51:14,967 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 18:51:14,970 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 18:51:14,971 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 18:51:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-15 18:51:14,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2023-02-15 18:51:14,987 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 18:51:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2023-02-15 18:51:14,991 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 29 [2023-02-15 18:51:14,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:51:14,992 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2023-02-15 18:51:14,992 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 18:51:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2023-02-15 18:51:14,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-15 18:51:14,997 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:51:14,997 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 18:51:15,020 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 18:51:15,201 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 18:51:15,206 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:51:15,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:51:15,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1645511465, now seen corresponding path program 2 times [2023-02-15 18:51:15,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:51:15,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359063668] [2023-02-15 18:51:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:51:15,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:51:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 18:51:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 18:51:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 18:51:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-15 18:51:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-15 18:51:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-15 18:51:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-15 18:51:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-15 18:51:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-15 18:51:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-02-15 18:51:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-15 18:51:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-02-15 18:51:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:15,543 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 18:51:15,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:51:15,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359063668] [2023-02-15 18:51:15,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359063668] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:51:15,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115438050] [2023-02-15 18:51:15,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 18:51:15,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:51:15,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:51:15,567 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 18:51:15,569 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 18:51:15,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 18:51:15,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:51:15,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 18:51:15,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:51:15,849 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 18:51:15,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:51:15,960 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 18:51:15,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115438050] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:51:15,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 18:51:15,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2023-02-15 18:51:15,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840138002] [2023-02-15 18:51:15,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 18:51:15,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 18:51:15,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:51:15,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 18:51:15,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2023-02-15 18:51:15,963 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 18:51:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:51:16,227 INFO L93 Difference]: Finished difference Result 162 states and 206 transitions. [2023-02-15 18:51:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 18:51:16,228 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 18:51:16,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:51:16,229 INFO L225 Difference]: With dead ends: 162 [2023-02-15 18:51:16,229 INFO L226 Difference]: Without dead ends: 145 [2023-02-15 18:51:16,230 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 18:51:16,230 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 282 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 18:51:16,231 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 18:51:16,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-15 18:51:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2023-02-15 18:51:16,240 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 18:51:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2023-02-15 18:51:16,241 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 89 [2023-02-15 18:51:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:51:16,242 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2023-02-15 18:51:16,242 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 18:51:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2023-02-15 18:51:16,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-02-15 18:51:16,247 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:51:16,247 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 18:51:16,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 18:51:16,452 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 18:51:16,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:51:16,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:51:16,453 INFO L85 PathProgramCache]: Analyzing trace with hash 548463335, now seen corresponding path program 3 times [2023-02-15 18:51:16,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:51:16,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92017901] [2023-02-15 18:51:16,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:51:16,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:51:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 18:51:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 18:51:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 18:51:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-15 18:51:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-15 18:51:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-15 18:51:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-15 18:51:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-15 18:51:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-15 18:51:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-02-15 18:51:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-15 18:51:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-02-15 18:51:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-02-15 18:51:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-02-15 18:51:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-02-15 18:51:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-02-15 18:51:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-02-15 18:51:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-02-15 18:51:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-02-15 18:51:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-02-15 18:51:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-02-15 18:51:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-02-15 18:51:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-02-15 18:51:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-02-15 18:51:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-02-15 18:51:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-02-15 18:51:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-15 18:51:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-02-15 18:51:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-02-15 18:51:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-02-15 18:51:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:16,899 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 18:51:16,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:51:16,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92017901] [2023-02-15 18:51:16,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92017901] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:51:16,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242130376] [2023-02-15 18:51:16,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 18:51:16,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:51:16,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:51:16,901 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 18:51:16,903 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 18:51:17,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 18:51:17,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:51:17,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 18:51:17,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:51:18,009 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 18:51:18,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:51:18,296 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 18:51:18,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242130376] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:51:18,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 18:51:18,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 37 [2023-02-15 18:51:18,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491712061] [2023-02-15 18:51:18,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 18:51:18,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-15 18:51:18,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:51:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-15 18:51:18,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2023-02-15 18:51:18,299 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 18:51:18,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:51:18,912 INFO L93 Difference]: Finished difference Result 342 states and 434 transitions. [2023-02-15 18:51:18,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 18:51:18,913 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 18:51:18,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:51:18,915 INFO L225 Difference]: With dead ends: 342 [2023-02-15 18:51:18,915 INFO L226 Difference]: Without dead ends: 313 [2023-02-15 18:51:18,916 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 18:51:18,916 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 18:51:18,916 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 18:51:18,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-02-15 18:51:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 192. [2023-02-15 18:51:18,932 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 18:51:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 259 transitions. [2023-02-15 18:51:18,934 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 259 transitions. Word has length 209 [2023-02-15 18:51:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:51:18,934 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 259 transitions. [2023-02-15 18:51:18,935 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 18:51:18,935 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 259 transitions. [2023-02-15 18:51:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2023-02-15 18:51:18,939 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:51:18,939 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 18:51:18,948 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 18:51:19,148 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 18:51:19,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:51:19,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:51:19,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1915094685, now seen corresponding path program 4 times [2023-02-15 18:51:19,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:51:19,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784730083] [2023-02-15 18:51:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:51:19,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:51:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 18:51:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 18:51:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 18:51:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-15 18:51:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-15 18:51:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-15 18:51:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-15 18:51:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-15 18:51:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-15 18:51:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-02-15 18:51:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-15 18:51:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-02-15 18:51:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-02-15 18:51:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-02-15 18:51:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-02-15 18:51:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-02-15 18:51:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-02-15 18:51:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-02-15 18:51:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-02-15 18:51:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-02-15 18:51:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-02-15 18:51:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-02-15 18:51:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-02-15 18:51:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-02-15 18:51:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-02-15 18:51:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-02-15 18:51:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-15 18:51:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-02-15 18:51:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-02-15 18:51:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-02-15 18:51:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-02-15 18:51:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-02-15 18:51:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-02-15 18:51:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-02-15 18:51:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-02-15 18:51:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-02-15 18:51:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-02-15 18:51:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-02-15 18:51:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-02-15 18:51:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-02-15 18:51:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-02-15 18:51:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-02-15 18:51:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-02-15 18:51:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-02-15 18:51:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-02-15 18:51:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2023-02-15 18:51:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-02-15 18:51:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-02-15 18:51:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-02-15 18:51:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-02-15 18:51:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-02-15 18:51:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-02-15 18:51:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-02-15 18:51:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-02-15 18:51:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-02-15 18:51:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2023-02-15 18:51:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-02-15 18:51:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2023-02-15 18:51:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2023-02-15 18:51:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2023-02-15 18:51:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2023-02-15 18:51:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2023-02-15 18:51:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2023-02-15 18:51:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2023-02-15 18:51:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2023-02-15 18:51:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2023-02-15 18:51:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:51:20,281 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 18:51:20,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:51:20,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784730083] [2023-02-15 18:51:20,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784730083] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:51:20,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371722623] [2023-02-15 18:51:20,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 18:51:20,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:51:20,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:51:20,283 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 18:51:20,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process