./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:54:52,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:54:52,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:54:52,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:54:52,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:54:52,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:54:52,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:54:52,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:54:52,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:54:52,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:54:52,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:54:52,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:54:52,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:54:52,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:54:52,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:54:52,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:54:52,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:54:52,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:54:52,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:54:52,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:54:52,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:54:52,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:54:52,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:54:52,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:54:52,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:54:52,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:54:52,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:54:52,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:54:52,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:54:52,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:54:52,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:54:52,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:54:52,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:54:52,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:54:52,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:54:52,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:54:52,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:54:52,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:54:52,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:54:52,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:54:52,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:54:52,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:54:52,441 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:54:52,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:54:52,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:54:52,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:54:52,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:54:52,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:54:52,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:54:52,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:54:52,443 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:54:52,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:54:52,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:54:52,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:54:52,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:54:52,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:54:52,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:54:52,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:54:52,446 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:54:52,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:54:52,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:54:52,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:54:52,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:54:52,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:54:52,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:54:52,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:54:52,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:54:52,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:54:52,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:54:52,449 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:54:52,449 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:54:52,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:54:52,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:54:52,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a [2021-12-14 17:54:52,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:54:52,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:54:52,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:54:52,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:54:52,745 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:54:52,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-14 17:54:52,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4004a08d/b9ed5a7175f245b39267960da8514639/FLAG501a83a99 [2021-12-14 17:54:53,519 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:54:53,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-14 17:54:53,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4004a08d/b9ed5a7175f245b39267960da8514639/FLAG501a83a99 [2021-12-14 17:54:53,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4004a08d/b9ed5a7175f245b39267960da8514639 [2021-12-14 17:54:53,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:54:53,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:54:53,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:54:53,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:54:53,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:54:53,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:54:53" (1/1) ... [2021-12-14 17:54:53,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff54bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:53, skipping insertion in model container [2021-12-14 17:54:53,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:54:53" (1/1) ... [2021-12-14 17:54:53,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:54:53,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:54:55,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2021-12-14 17:54:55,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:54:55,215 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:54:55,515 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2021-12-14 17:54:55,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:54:55,620 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:54:55,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:55 WrapperNode [2021-12-14 17:54:55,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:54:55,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:54:55,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:54:55,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:54:55,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:55" (1/1) ... [2021-12-14 17:54:55,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:55" (1/1) ... [2021-12-14 17:54:55,798 INFO L137 Inliner]: procedures = 187, calls = 873, calls flagged for inlining = 93, calls inlined = 91, statements flattened = 3212 [2021-12-14 17:54:55,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:54:55,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:54:55,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:54:55,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:54:55,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:55" (1/1) ... [2021-12-14 17:54:55,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:55" (1/1) ... [2021-12-14 17:54:55,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:55" (1/1) ... [2021-12-14 17:54:55,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:55" (1/1) ... [2021-12-14 17:54:55,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:55" (1/1) ... [2021-12-14 17:54:55,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:55" (1/1) ... [2021-12-14 17:54:55,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:55" (1/1) ... [2021-12-14 17:54:56,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:54:56,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:54:56,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:54:56,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:54:56,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:55" (1/1) ... [2021-12-14 17:54:56,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:54:56,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:54:56,045 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) [2021-12-14 17:54:56,067 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 [2021-12-14 17:54:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2021-12-14 17:54:56,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2021-12-14 17:54:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2021-12-14 17:54:56,088 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2021-12-14 17:54:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:54:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-14 17:54:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-14 17:54:56,088 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-14 17:54:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:54:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:54:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:54:56,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:54:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:54:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 17:54:56,089 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 17:54:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-14 17:54:56,090 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-14 17:54:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-14 17:54:56,090 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-14 17:54:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-12-14 17:54:56,090 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-12-14 17:54:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:54:56,090 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:54:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 17:54:56,091 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 17:54:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:54:56,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:54:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-14 17:54:56,091 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-14 17:54:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-14 17:54:56,091 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-14 17:54:56,092 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:54:56,092 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:54:56,092 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2021-12-14 17:54:56,092 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2021-12-14 17:54:56,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:54:56,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:54:56,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:54:56,093 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-14 17:54:56,093 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-14 17:54:56,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 17:54:56,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 17:54:56,094 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:54:56,094 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:54:56,094 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-14 17:54:56,094 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-14 17:54:56,094 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-14 17:54:56,094 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-14 17:54:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:54:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-14 17:54:56,095 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-14 17:54:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 17:54:56,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 17:54:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2021-12-14 17:54:56,096 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2021-12-14 17:54:56,096 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2021-12-14 17:54:56,097 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2021-12-14 17:54:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:54:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-14 17:54:56,098 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-14 17:54:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2021-12-14 17:54:56,098 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2021-12-14 17:54:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:54:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:54:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:54:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-14 17:54:56,099 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-14 17:54:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2021-12-14 17:54:56,099 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2021-12-14 17:54:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-14 17:54:56,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-14 17:54:56,100 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2021-12-14 17:54:56,100 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2021-12-14 17:54:56,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:54:56,100 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-14 17:54:56,101 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-14 17:54:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-14 17:54:56,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-14 17:54:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-14 17:54:56,101 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-14 17:54:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2021-12-14 17:54:56,101 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2021-12-14 17:54:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2021-12-14 17:54:56,102 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2021-12-14 17:54:56,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:54:56,102 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-12-14 17:54:56,102 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-12-14 17:54:56,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:54:56,103 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2021-12-14 17:54:56,103 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2021-12-14 17:54:56,103 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 17:54:56,103 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 17:54:56,103 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2021-12-14 17:54:56,104 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2021-12-14 17:54:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:54:56,104 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:54:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-14 17:54:56,105 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-14 17:54:56,105 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2021-12-14 17:54:56,105 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2021-12-14 17:54:56,105 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-12-14 17:54:56,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-12-14 17:54:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-14 17:54:56,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-14 17:54:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-14 17:54:56,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-14 17:54:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-14 17:54:56,106 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-14 17:54:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 17:54:56,107 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 17:54:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:54:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-14 17:54:56,107 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-14 17:54:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-12-14 17:54:56,108 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-12-14 17:54:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-12-14 17:54:56,108 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-12-14 17:54:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:54:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:54:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:54:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2021-12-14 17:54:56,112 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2021-12-14 17:54:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-14 17:54:56,113 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-14 17:54:56,606 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:54:56,608 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:54:56,747 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:54:58,594 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:54:58,619 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:54:58,620 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:54:58,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:54:58 BoogieIcfgContainer [2021-12-14 17:54:58,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:54:58,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:54:58,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:54:58,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:54:58,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:54:53" (1/3) ... [2021-12-14 17:54:58,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36aa7d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:54:58, skipping insertion in model container [2021-12-14 17:54:58,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:55" (2/3) ... [2021-12-14 17:54:58,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36aa7d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:54:58, skipping insertion in model container [2021-12-14 17:54:58,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:54:58" (3/3) ... [2021-12-14 17:54:58,630 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-14 17:54:58,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:54:58,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:54:58,702 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:54:58,717 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:54:58,717 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:54:58,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 1106 states, 816 states have (on average 1.4227941176470589) internal successors, (1161), 848 states have internal predecessors, (1161), 236 states have call successors, (236), 53 states have call predecessors, (236), 52 states have return successors, (231), 229 states have call predecessors, (231), 231 states have call successors, (231) [2021-12-14 17:54:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-14 17:54:58,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:58,775 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:54:58,776 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:58,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:58,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1170411247, now seen corresponding path program 1 times [2021-12-14 17:54:58,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:58,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396567512] [2021-12-14 17:54:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:58,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:54:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:54:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:54:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:54:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:54:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:54:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:54:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:54:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:54:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:54:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:54:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:54:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:54:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:54:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:54:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:54:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:54:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:54:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:54:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:54:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:54:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:54:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 17:54:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-12-14 17:54:59,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:59,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396567512] [2021-12-14 17:54:59,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396567512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:59,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:59,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:54:59,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73934727] [2021-12-14 17:54:59,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:59,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:54:59,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:59,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:54:59,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:54:59,602 INFO L87 Difference]: Start difference. First operand has 1106 states, 816 states have (on average 1.4227941176470589) internal successors, (1161), 848 states have internal predecessors, (1161), 236 states have call successors, (236), 53 states have call predecessors, (236), 52 states have return successors, (231), 229 states have call predecessors, (231), 231 states have call successors, (231) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:55:03,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:55:05,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:55:05,998 INFO L93 Difference]: Finished difference Result 2338 states and 3505 transitions. [2021-12-14 17:55:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:55:06,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 161 [2021-12-14 17:55:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:55:06,025 INFO L225 Difference]: With dead ends: 2338 [2021-12-14 17:55:06,026 INFO L226 Difference]: Without dead ends: 1194 [2021-12-14 17:55:06,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:55:06,043 INFO L933 BasicCegarLoop]: 1528 mSDtfsCounter, 1085 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 1633 mSolverCounterSat, 649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 1633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:55:06,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1141 Valid, 3686 Invalid, 2282 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [649 Valid, 1633 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-12-14 17:55:06,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-12-14 17:55:06,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1064. [2021-12-14 17:55:06,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 787 states have (on average 1.4142312579415501) internal successors, (1113), 811 states have internal predecessors, (1113), 224 states have call successors, (224), 52 states have call predecessors, (224), 52 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2021-12-14 17:55:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1561 transitions. [2021-12-14 17:55:06,159 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1561 transitions. Word has length 161 [2021-12-14 17:55:06,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:55:06,159 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1561 transitions. [2021-12-14 17:55:06,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:55:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1561 transitions. [2021-12-14 17:55:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-14 17:55:06,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:55:06,165 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:55:06,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:55:06,166 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:55:06,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:55:06,167 INFO L85 PathProgramCache]: Analyzing trace with hash -448386267, now seen corresponding path program 1 times [2021-12-14 17:55:06,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:55:06,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423000351] [2021-12-14 17:55:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:55:06,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:55:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:55:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:55:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:55:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:55:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:55:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:55:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:55:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:55:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:55:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:55:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:55:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:55:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:55:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 17:55:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-12-14 17:55:06,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:55:06,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423000351] [2021-12-14 17:55:06,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423000351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:55:06,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:55:06,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:55:06,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976940286] [2021-12-14 17:55:06,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:55:06,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:55:06,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:55:06,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:55:06,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:55:06,545 INFO L87 Difference]: Start difference. First operand 1064 states and 1561 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-14 17:55:09,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:55:12,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:55:14,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:55:14,561 INFO L93 Difference]: Finished difference Result 2884 states and 4254 transitions. [2021-12-14 17:55:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:55:14,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 161 [2021-12-14 17:55:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:55:14,581 INFO L225 Difference]: With dead ends: 2884 [2021-12-14 17:55:14,582 INFO L226 Difference]: Without dead ends: 1856 [2021-12-14 17:55:14,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:55:14,589 INFO L933 BasicCegarLoop]: 1532 mSDtfsCounter, 2328 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 1205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2468 SdHoareTripleChecker+Valid, 4497 SdHoareTripleChecker+Invalid, 3897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1205 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:55:14,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2468 Valid, 4497 Invalid, 3897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1205 Valid, 2692 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2021-12-14 17:55:14,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-12-14 17:55:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1624. [2021-12-14 17:55:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1191 states have (on average 1.397984886649874) internal successors, (1665), 1224 states have internal predecessors, (1665), 341 states have call successors, (341), 91 states have call predecessors, (341), 91 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2021-12-14 17:55:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2347 transitions. [2021-12-14 17:55:14,696 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2347 transitions. Word has length 161 [2021-12-14 17:55:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:55:14,699 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 2347 transitions. [2021-12-14 17:55:14,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-14 17:55:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2347 transitions. [2021-12-14 17:55:14,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-14 17:55:14,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:55:14,711 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:55:14,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:55:14,711 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:55:14,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:55:14,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1775569213, now seen corresponding path program 1 times [2021-12-14 17:55:14,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:55:14,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475221304] [2021-12-14 17:55:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:55:14,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:55:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:55:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:55:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:55:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:55:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:55:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:55:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:14,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:55:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:55:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:55:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:55:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:55:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:55:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:55:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 17:55:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:55:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-14 17:55:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-14 17:55:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-12-14 17:55:15,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:55:15,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475221304] [2021-12-14 17:55:15,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475221304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:55:15,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:55:15,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:55:15,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240420849] [2021-12-14 17:55:15,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:55:15,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:55:15,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:55:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:55:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:55:15,177 INFO L87 Difference]: Start difference. First operand 1624 states and 2347 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-14 17:55:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:55:18,710 INFO L93 Difference]: Finished difference Result 3434 states and 5029 transitions. [2021-12-14 17:55:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:55:18,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 222 [2021-12-14 17:55:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:55:18,721 INFO L225 Difference]: With dead ends: 3434 [2021-12-14 17:55:18,721 INFO L226 Difference]: Without dead ends: 1856 [2021-12-14 17:55:18,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:55:18,728 INFO L933 BasicCegarLoop]: 1455 mSDtfsCounter, 2780 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2919 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:55:18,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2919 Valid, 2923 Invalid, 2415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1225 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-14 17:55:18,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-12-14 17:55:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1624. [2021-12-14 17:55:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1191 states have (on average 1.396305625524769) internal successors, (1663), 1224 states have internal predecessors, (1663), 341 states have call successors, (341), 91 states have call predecessors, (341), 91 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2021-12-14 17:55:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2345 transitions. [2021-12-14 17:55:18,797 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2345 transitions. Word has length 222 [2021-12-14 17:55:18,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:55:18,798 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 2345 transitions. [2021-12-14 17:55:18,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-14 17:55:18,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2345 transitions. [2021-12-14 17:55:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-14 17:55:18,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:55:18,803 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:55:18,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:55:18,804 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:55:18,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:55:18,804 INFO L85 PathProgramCache]: Analyzing trace with hash 132888577, now seen corresponding path program 1 times [2021-12-14 17:55:18,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:55:18,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210707686] [2021-12-14 17:55:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:55:18,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:55:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:55:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:55:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:55:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:55:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:55:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:55:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:18,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:55:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:55:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:55:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:55:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:55:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:55:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:55:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 17:55:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:55:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-14 17:55:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-14 17:55:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-12-14 17:55:19,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:55:19,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210707686] [2021-12-14 17:55:19,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210707686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:55:19,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:55:19,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:55:19,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521811686] [2021-12-14 17:55:19,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:55:19,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:55:19,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:55:19,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:55:19,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:55:19,154 INFO L87 Difference]: Start difference. First operand 1624 states and 2345 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-14 17:55:23,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:55:23,574 INFO L93 Difference]: Finished difference Result 3438 states and 5029 transitions. [2021-12-14 17:55:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:55:23,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 222 [2021-12-14 17:55:23,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:55:23,585 INFO L225 Difference]: With dead ends: 3438 [2021-12-14 17:55:23,585 INFO L226 Difference]: Without dead ends: 1856 [2021-12-14 17:55:23,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:55:23,591 INFO L933 BasicCegarLoop]: 1462 mSDtfsCounter, 1195 mSDsluCounter, 3607 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 5069 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:55:23,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 5069 Invalid, 3147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-14 17:55:23,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-12-14 17:55:23,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1624. [2021-12-14 17:55:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1191 states have (on average 1.3946263643996641) internal successors, (1661), 1224 states have internal predecessors, (1661), 341 states have call successors, (341), 91 states have call predecessors, (341), 91 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2021-12-14 17:55:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2343 transitions. [2021-12-14 17:55:23,660 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2343 transitions. Word has length 222 [2021-12-14 17:55:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:55:23,661 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 2343 transitions. [2021-12-14 17:55:23,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-14 17:55:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2343 transitions. [2021-12-14 17:55:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-14 17:55:23,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:55:23,667 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:55:23,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:55:23,667 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:55:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:55:23,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1941303628, now seen corresponding path program 1 times [2021-12-14 17:55:23,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:55:23,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245981386] [2021-12-14 17:55:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:55:23,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:55:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:55:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:55:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:55:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:55:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:55:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:55:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:55:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:55:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:55:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:55:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:55:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:23,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:55:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:24,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:55:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 17:55:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:55:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:24,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:24,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 17:55:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:24,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-14 17:55:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:24,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-12-14 17:55:24,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:55:24,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245981386] [2021-12-14 17:55:24,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245981386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:55:24,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:55:24,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:55:24,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148241390] [2021-12-14 17:55:24,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:55:24,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:55:24,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:55:24,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:55:24,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:55:24,067 INFO L87 Difference]: Start difference. First operand 1624 states and 2343 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-14 17:55:26,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:55:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:55:29,006 INFO L93 Difference]: Finished difference Result 2446 states and 3732 transitions. [2021-12-14 17:55:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:55:29,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 225 [2021-12-14 17:55:29,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:55:29,021 INFO L225 Difference]: With dead ends: 2446 [2021-12-14 17:55:29,021 INFO L226 Difference]: Without dead ends: 2444 [2021-12-14 17:55:29,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:55:29,025 INFO L933 BasicCegarLoop]: 2062 mSDtfsCounter, 2396 mSDsluCounter, 4281 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 1173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2484 SdHoareTripleChecker+Valid, 6343 SdHoareTripleChecker+Invalid, 3579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1173 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:55:29,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2484 Valid, 6343 Invalid, 3579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1173 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-14 17:55:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2021-12-14 17:55:29,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 1626. [2021-12-14 17:55:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1193 states have (on average 1.393964794635373) internal successors, (1663), 1226 states have internal predecessors, (1663), 341 states have call successors, (341), 91 states have call predecessors, (341), 91 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2021-12-14 17:55:29,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2345 transitions. [2021-12-14 17:55:29,101 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2345 transitions. Word has length 225 [2021-12-14 17:55:29,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:55:29,102 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 2345 transitions. [2021-12-14 17:55:29,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-14 17:55:29,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2345 transitions. [2021-12-14 17:55:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-14 17:55:29,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:55:29,108 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:55:29,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:55:29,109 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:55:29,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:55:29,109 INFO L85 PathProgramCache]: Analyzing trace with hash -880059583, now seen corresponding path program 1 times [2021-12-14 17:55:29,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:55:29,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982145250] [2021-12-14 17:55:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:55:29,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:55:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:55:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:55:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:55:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:55:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:55:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:55:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:55:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:55:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:55:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:55:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:55:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:55:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:55:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 17:55:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:55:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 17:55:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-14 17:55:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-14 17:55:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-12-14 17:55:29,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:55:29,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982145250] [2021-12-14 17:55:29,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982145250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:55:29,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:55:29,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:55:29,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119489479] [2021-12-14 17:55:29,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:55:29,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:55:29,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:55:29,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:55:29,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:55:29,507 INFO L87 Difference]: Start difference. First operand 1626 states and 2345 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-14 17:55:32,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:55:36,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:55:36,624 INFO L93 Difference]: Finished difference Result 4028 states and 6019 transitions. [2021-12-14 17:55:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:55:36,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 235 [2021-12-14 17:55:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:55:36,639 INFO L225 Difference]: With dead ends: 4028 [2021-12-14 17:55:36,639 INFO L226 Difference]: Without dead ends: 2448 [2021-12-14 17:55:36,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:55:36,645 INFO L933 BasicCegarLoop]: 1780 mSDtfsCounter, 3428 mSDsluCounter, 2849 mSDsCounter, 0 mSdLazyCounter, 2939 mSolverCounterSat, 1517 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3696 SdHoareTripleChecker+Valid, 4629 SdHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1517 IncrementalHoareTripleChecker+Valid, 2939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:55:36,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3696 Valid, 4629 Invalid, 4457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1517 Valid, 2939 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-12-14 17:55:36,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2021-12-14 17:55:36,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 1627. [2021-12-14 17:55:36,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1194 states have (on average 1.3936348408710217) internal successors, (1664), 1227 states have internal predecessors, (1664), 341 states have call successors, (341), 91 states have call predecessors, (341), 91 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2021-12-14 17:55:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2346 transitions. [2021-12-14 17:55:36,719 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2346 transitions. Word has length 235 [2021-12-14 17:55:36,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:55:36,720 INFO L470 AbstractCegarLoop]: Abstraction has 1627 states and 2346 transitions. [2021-12-14 17:55:36,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-14 17:55:36,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2346 transitions. [2021-12-14 17:55:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-14 17:55:36,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:55:36,727 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:55:36,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:55:36,727 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:55:36,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:55:36,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1720594174, now seen corresponding path program 1 times [2021-12-14 17:55:36,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:55:36,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817178454] [2021-12-14 17:55:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:55:36,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:55:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:55:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:55:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:55:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:55:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:55:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:55:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:55:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:55:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:55:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:55:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:55:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:36,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:55:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:37,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:55:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 17:55:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:37,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:55:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:37,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 17:55:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:37,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:37,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:37,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-14 17:55:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:37,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:37,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-14 17:55:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-12-14 17:55:37,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:55:37,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817178454] [2021-12-14 17:55:37,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817178454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:55:37,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:55:37,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:55:37,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777987883] [2021-12-14 17:55:37,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:55:37,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:55:37,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:55:37,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:55:37,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:55:37,055 INFO L87 Difference]: Start difference. First operand 1627 states and 2346 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:55:42,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:55:42,951 INFO L93 Difference]: Finished difference Result 3379 states and 5313 transitions. [2021-12-14 17:55:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:55:42,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 237 [2021-12-14 17:55:42,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:55:42,972 INFO L225 Difference]: With dead ends: 3379 [2021-12-14 17:55:42,972 INFO L226 Difference]: Without dead ends: 3377 [2021-12-14 17:55:42,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:55:42,976 INFO L933 BasicCegarLoop]: 2482 mSDtfsCounter, 3278 mSDsluCounter, 7914 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 1524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3466 SdHoareTripleChecker+Valid, 10396 SdHoareTripleChecker+Invalid, 5566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1524 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:55:42,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3466 Valid, 10396 Invalid, 5566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1524 Valid, 4042 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-14 17:55:42,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2021-12-14 17:55:43,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 1629. [2021-12-14 17:55:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1195 states have (on average 1.393305439330544) internal successors, (1665), 1227 states have internal predecessors, (1665), 342 states have call successors, (342), 91 states have call predecessors, (342), 91 states have return successors, (342), 339 states have call predecessors, (342), 342 states have call successors, (342) [2021-12-14 17:55:43,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2349 transitions. [2021-12-14 17:55:43,075 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2349 transitions. Word has length 237 [2021-12-14 17:55:43,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:55:43,076 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 2349 transitions. [2021-12-14 17:55:43,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:55:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2349 transitions. [2021-12-14 17:55:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-12-14 17:55:43,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:55:43,085 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:55:43,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:55:43,085 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:55:43,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:55:43,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2044074345, now seen corresponding path program 1 times [2021-12-14 17:55:43,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:55:43,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399304883] [2021-12-14 17:55:43,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:55:43,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:55:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:55:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:55:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:55:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:55:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:55:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:55:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:55:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:55:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:55:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:55:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:55:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:55:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:55:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 17:55:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:55:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 17:55:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-14 17:55:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:55:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:55:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-14 17:55:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-14 17:55:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-14 17:55:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-14 17:55:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-14 17:55:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-12-14 17:55:43,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:55:43,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399304883] [2021-12-14 17:55:43,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399304883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:55:43,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:55:43,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:55:43,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34035342] [2021-12-14 17:55:43,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:55:43,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:55:43,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:55:43,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:55:43,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:55:43,512 INFO L87 Difference]: Start difference. First operand 1629 states and 2349 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-14 17:55:45,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:55:48,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:55:50,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []