./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.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 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 00:05:30,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:05:30,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:05:30,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:05:30,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:05:30,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:05:30,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:05:30,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:05:30,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:05:30,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:05:30,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:05:30,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:05:30,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:05:30,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:05:30,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:05:30,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:05:30,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:05:30,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:05:30,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:05:30,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:05:30,096 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:05:30,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:05:30,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:05:30,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:05:30,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:05:30,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:05:30,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:05:30,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:05:30,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:05:30,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:05:30,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:05:30,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:05:30,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:05:30,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:05:30,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:05:30,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:05:30,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:05:30,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:05:30,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:05:30,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:05:30,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:05:30,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:05:30,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 00:05:30,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:05:30,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:05:30,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:05:30,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:05:30,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:05:30,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:05:30,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:05:30,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:05:30,133 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:05:30,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:05:30,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 00:05:30,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:05:30,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:05:30,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:05:30,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:05:30,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:05:30,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:05:30,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:05:30,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:05:30,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:05:30,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:05:30,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:05:30,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:05:30,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:05:30,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:05:30,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 00:05:30,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 00:05:30,136 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:05:30,136 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:05:30,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:05:30,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 [2022-07-14 00:05:30,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:05:30,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:05:30,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:05:30,350 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:05:30,350 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:05:30,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2022-07-14 00:05:30,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0acdb13/b47dc83d983c45aabee73fe759a38135/FLAGe87ec6a3e [2022-07-14 00:05:31,118 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:05:31,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2022-07-14 00:05:31,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0acdb13/b47dc83d983c45aabee73fe759a38135/FLAGe87ec6a3e [2022-07-14 00:05:31,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0acdb13/b47dc83d983c45aabee73fe759a38135 [2022-07-14 00:05:31,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:05:31,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:05:31,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:05:31,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:05:31,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:05:31,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:05:31" (1/1) ... [2022-07-14 00:05:31,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@741c810a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:31, skipping insertion in model container [2022-07-14 00:05:31,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:05:31" (1/1) ... [2022-07-14 00:05:31,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:05:31,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:05:32,229 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2022-07-14 00:05:32,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:05:32,717 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:05:32,815 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2022-07-14 00:05:32,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:05:33,041 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:05:33,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:33 WrapperNode [2022-07-14 00:05:33,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:05:33,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:05:33,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:05:33,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:05:33,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:33" (1/1) ... [2022-07-14 00:05:33,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:33" (1/1) ... [2022-07-14 00:05:33,233 INFO L137 Inliner]: procedures = 160, calls = 847, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 2365 [2022-07-14 00:05:33,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:05:33,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:05:33,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:05:33,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:05:33,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:33" (1/1) ... [2022-07-14 00:05:33,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:33" (1/1) ... [2022-07-14 00:05:33,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:33" (1/1) ... [2022-07-14 00:05:33,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:33" (1/1) ... [2022-07-14 00:05:33,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:33" (1/1) ... [2022-07-14 00:05:33,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:33" (1/1) ... [2022-07-14 00:05:33,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:33" (1/1) ... [2022-07-14 00:05:33,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:05:33,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:05:33,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:05:33,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:05:33,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:33" (1/1) ... [2022-07-14 00:05:33,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:05:33,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:05:33,455 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) [2022-07-14 00:05:33,459 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 [2022-07-14 00:05:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-07-14 00:05:33,489 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-07-14 00:05:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2022-07-14 00:05:33,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2022-07-14 00:05:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_17 [2022-07-14 00:05:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_17 [2022-07-14 00:05:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2022-07-14 00:05:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2022-07-14 00:05:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-14 00:05:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-14 00:05:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:05:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:05:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 00:05:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-14 00:05:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-14 00:05:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure can_free_echo_skb [2022-07-14 00:05:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure can_free_echo_skb [2022-07-14 00:05:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-07-14 00:05:33,492 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-07-14 00:05:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-14 00:05:33,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-14 00:05:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-14 00:05:33,492 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-14 00:05:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-14 00:05:33,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-14 00:05:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:05:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:05:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-14 00:05:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-14 00:05:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-07-14 00:05:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-07-14 00:05:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 00:05:33,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 00:05:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-07-14 00:05:33,494 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-07-14 00:05:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 00:05:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:05:33,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:05:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-14 00:05:33,495 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-14 00:05:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 00:05:33,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 00:05:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:05:33,495 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:05:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-14 00:05:33,495 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-14 00:05:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:05:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-14 00:05:33,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-14 00:05:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_4 [2022-07-14 00:05:33,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_4 [2022-07-14 00:05:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:05:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-14 00:05:33,497 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-14 00:05:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-14 00:05:33,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-14 00:05:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:05:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:05:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-14 00:05:33,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-14 00:05:33,501 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-07-14 00:05:33,501 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-07-14 00:05:33,501 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-07-14 00:05:33,501 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-07-14 00:05:33,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:05:33,502 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-07-14 00:05:33,502 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-07-14 00:05:33,502 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-07-14 00:05:33,502 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-07-14 00:05:33,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-14 00:05:33,502 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-14 00:05:33,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:05:33,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:05:33,503 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-14 00:05:33,503 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-14 00:05:33,503 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_read_bulk_callback [2022-07-14 00:05:33,503 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_read_bulk_callback [2022-07-14 00:05:33,504 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_send_msg [2022-07-14 00:05:33,504 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_send_msg [2022-07-14 00:05:33,504 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-07-14 00:05:33,505 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-07-14 00:05:33,505 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-14 00:05:33,505 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-14 00:05:33,505 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-14 00:05:33,505 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-14 00:05:33,505 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-14 00:05:33,505 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-14 00:05:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-14 00:05:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-14 00:05:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-14 00:05:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-14 00:05:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-07-14 00:05:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-07-14 00:05:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 00:05:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-07-14 00:05:33,508 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-07-14 00:05:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-14 00:05:33,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-14 00:05:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-14 00:05:33,509 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-14 00:05:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_disconnect [2022-07-14 00:05:33,509 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_disconnect [2022-07-14 00:05:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:05:33,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:05:33,982 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:05:33,984 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:05:34,204 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:05:34,879 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-14 00:05:36,031 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:05:36,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:05:36,077 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 00:05:36,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:05:36 BoogieIcfgContainer [2022-07-14 00:05:36,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:05:36,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:05:36,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:05:36,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:05:36,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:05:31" (1/3) ... [2022-07-14 00:05:36,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afe167d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:05:36, skipping insertion in model container [2022-07-14 00:05:36,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:05:33" (2/3) ... [2022-07-14 00:05:36,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afe167d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:05:36, skipping insertion in model container [2022-07-14 00:05:36,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:05:36" (3/3) ... [2022-07-14 00:05:36,113 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2022-07-14 00:05:36,126 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:05:36,135 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:05:36,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:05:36,252 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@73bac3d3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@66d1ec1e [2022-07-14 00:05:36,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:05:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 694 states, 506 states have (on average 1.3517786561264822) internal successors, (684), 534 states have internal predecessors, (684), 142 states have call successors, (142), 46 states have call predecessors, (142), 44 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2022-07-14 00:05:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-14 00:05:36,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:05:36,279 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:05:36,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:05:36,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:05:36,299 INFO L85 PathProgramCache]: Analyzing trace with hash 551740128, now seen corresponding path program 1 times [2022-07-14 00:05:36,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:05:36,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075526420] [2022-07-14 00:05:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:05:36,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:05:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:37,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:05:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:37,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:05:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:37,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:05:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:37,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:05:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:37,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:05:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:05:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:05:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:37,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:05:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:05:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:37,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:05:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:37,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:05:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-14 00:05:37,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:05:37,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075526420] [2022-07-14 00:05:37,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075526420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:05:37,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:05:37,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:05:37,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199933533] [2022-07-14 00:05:37,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:05:37,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:05:37,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:05:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:05:37,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:05:37,299 INFO L87 Difference]: Start difference. First operand has 694 states, 506 states have (on average 1.3517786561264822) internal successors, (684), 534 states have internal predecessors, (684), 142 states have call successors, (142), 46 states have call predecessors, (142), 44 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-14 00:05:40,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:05:40,488 INFO L93 Difference]: Finished difference Result 2172 states and 3109 transitions. [2022-07-14 00:05:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:05:40,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 83 [2022-07-14 00:05:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:05:40,537 INFO L225 Difference]: With dead ends: 2172 [2022-07-14 00:05:40,537 INFO L226 Difference]: Without dead ends: 1455 [2022-07-14 00:05:40,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:05:40,575 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 1254 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:05:40,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 2245 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-14 00:05:40,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2022-07-14 00:05:40,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1303. [2022-07-14 00:05:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 968 states have (on average 1.3305785123966942) internal successors, (1288), 998 states have internal predecessors, (1288), 248 states have call successors, (248), 87 states have call predecessors, (248), 86 states have return successors, (243), 241 states have call predecessors, (243), 243 states have call successors, (243) [2022-07-14 00:05:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1779 transitions. [2022-07-14 00:05:40,858 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1779 transitions. Word has length 83 [2022-07-14 00:05:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:05:40,858 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 1779 transitions. [2022-07-14 00:05:40,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-14 00:05:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1779 transitions. [2022-07-14 00:05:40,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-14 00:05:40,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:05:40,868 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:05:40,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 00:05:40,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:05:40,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:05:40,869 INFO L85 PathProgramCache]: Analyzing trace with hash 821150244, now seen corresponding path program 1 times [2022-07-14 00:05:40,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:05:40,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269080422] [2022-07-14 00:05:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:05:40,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:05:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:05:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:05:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:05:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:05:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:05:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:05:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:05:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:05:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:05:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:05:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:05:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:05:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-14 00:05:41,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:05:41,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269080422] [2022-07-14 00:05:41,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269080422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:05:41,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:05:41,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:05:41,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877820069] [2022-07-14 00:05:41,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:05:41,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:05:41,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:05:41,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:05:41,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:05:41,407 INFO L87 Difference]: Start difference. First operand 1303 states and 1779 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-14 00:05:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:05:44,002 INFO L93 Difference]: Finished difference Result 4162 states and 5775 transitions. [2022-07-14 00:05:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:05:44,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 93 [2022-07-14 00:05:44,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:05:44,039 INFO L225 Difference]: With dead ends: 4162 [2022-07-14 00:05:44,040 INFO L226 Difference]: Without dead ends: 2884 [2022-07-14 00:05:44,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:05:44,058 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 1115 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:05:44,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 2439 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-14 00:05:44,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2022-07-14 00:05:44,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2570. [2022-07-14 00:05:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2570 states, 1917 states have (on average 1.3307250912884716) internal successors, (2551), 1973 states have internal predecessors, (2551), 480 states have call successors, (480), 173 states have call predecessors, (480), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-07-14 00:05:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 3516 transitions. [2022-07-14 00:05:44,403 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 3516 transitions. Word has length 93 [2022-07-14 00:05:44,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:05:44,407 INFO L495 AbstractCegarLoop]: Abstraction has 2570 states and 3516 transitions. [2022-07-14 00:05:44,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-14 00:05:44,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 3516 transitions. [2022-07-14 00:05:44,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-14 00:05:44,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:05:44,419 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:05:44,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 00:05:44,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:05:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:05:44,420 INFO L85 PathProgramCache]: Analyzing trace with hash -314455533, now seen corresponding path program 1 times [2022-07-14 00:05:44,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:05:44,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165776167] [2022-07-14 00:05:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:05:44,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:05:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:44,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:05:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:44,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:05:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:44,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:05:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:44,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:05:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:44,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:05:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:44,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:05:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:44,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:05:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:05:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:44,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:05:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:44,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:05:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:05:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:44,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:05:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-14 00:05:45,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:05:45,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165776167] [2022-07-14 00:05:45,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165776167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:05:45,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:05:45,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:05:45,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32475421] [2022-07-14 00:05:45,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:05:45,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:05:45,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:05:45,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:05:45,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:05:45,009 INFO L87 Difference]: Start difference. First operand 2570 states and 3516 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-14 00:05:46,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:05:46,442 INFO L93 Difference]: Finished difference Result 2876 states and 4012 transitions. [2022-07-14 00:05:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:05:46,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 94 [2022-07-14 00:05:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:05:46,485 INFO L225 Difference]: With dead ends: 2876 [2022-07-14 00:05:46,488 INFO L226 Difference]: Without dead ends: 2873 [2022-07-14 00:05:46,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:05:46,496 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 1045 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:05:46,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 1284 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-14 00:05:46,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-07-14 00:05:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2569. [2022-07-14 00:05:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2569 states, 1917 states have (on average 1.3302034428794993) internal successors, (2550), 1972 states have internal predecessors, (2550), 479 states have call successors, (479), 173 states have call predecessors, (479), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-07-14 00:05:46,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3514 transitions. [2022-07-14 00:05:46,683 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3514 transitions. Word has length 94 [2022-07-14 00:05:46,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:05:46,683 INFO L495 AbstractCegarLoop]: Abstraction has 2569 states and 3514 transitions. [2022-07-14 00:05:46,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-14 00:05:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3514 transitions. [2022-07-14 00:05:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-14 00:05:46,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:05:46,686 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:05:46,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 00:05:46,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:05:46,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:05:46,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1158491385, now seen corresponding path program 1 times [2022-07-14 00:05:46,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:05:46,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925315171] [2022-07-14 00:05:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:05:46,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:05:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:05:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:46,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:05:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:05:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:46,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:05:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:46,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:05:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:46,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:05:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:46,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:05:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:05:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:47,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:05:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:47,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:05:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:47,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:05:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:47,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:05:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-14 00:05:47,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:05:47,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925315171] [2022-07-14 00:05:47,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925315171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:05:47,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:05:47,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:05:47,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300107320] [2022-07-14 00:05:47,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:05:47,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:05:47,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:05:47,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:05:47,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:05:47,058 INFO L87 Difference]: Start difference. First operand 2569 states and 3514 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-14 00:05:48,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:05:48,153 INFO L93 Difference]: Finished difference Result 2875 states and 4010 transitions. [2022-07-14 00:05:48,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:05:48,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 95 [2022-07-14 00:05:48,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:05:48,170 INFO L225 Difference]: With dead ends: 2875 [2022-07-14 00:05:48,170 INFO L226 Difference]: Without dead ends: 2872 [2022-07-14 00:05:48,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:05:48,174 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1055 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:05:48,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 1269 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-14 00:05:48,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2022-07-14 00:05:48,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2568. [2022-07-14 00:05:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2568 states, 1917 states have (on average 1.3296817944705268) internal successors, (2549), 1971 states have internal predecessors, (2549), 478 states have call successors, (478), 173 states have call predecessors, (478), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-07-14 00:05:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3512 transitions. [2022-07-14 00:05:48,336 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3512 transitions. Word has length 95 [2022-07-14 00:05:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:05:48,338 INFO L495 AbstractCegarLoop]: Abstraction has 2568 states and 3512 transitions. [2022-07-14 00:05:48,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-14 00:05:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3512 transitions. [2022-07-14 00:05:48,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-14 00:05:48,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:05:48,340 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:05:48,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 00:05:48,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:05:48,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:05:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1553794154, now seen corresponding path program 1 times [2022-07-14 00:05:48,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:05:48,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267080816] [2022-07-14 00:05:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:05:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:05:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:05:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:05:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:05:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:05:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:05:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:05:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:05:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:05:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:05:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:05:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:05:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:05:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-14 00:05:48,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:05:48,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267080816] [2022-07-14 00:05:48,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267080816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:05:48,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:05:48,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:05:48,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637189220] [2022-07-14 00:05:48,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:05:48,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:05:48,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:05:48,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:05:48,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:05:48,647 INFO L87 Difference]: Start difference. First operand 2568 states and 3512 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-14 00:05:49,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:05:49,707 INFO L93 Difference]: Finished difference Result 2874 states and 4008 transitions. [2022-07-14 00:05:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:05:49,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 96 [2022-07-14 00:05:49,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:05:49,729 INFO L225 Difference]: With dead ends: 2874 [2022-07-14 00:05:49,729 INFO L226 Difference]: Without dead ends: 2871 [2022-07-14 00:05:49,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:05:49,732 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1048 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:05:49,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 1266 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-14 00:05:49,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2022-07-14 00:05:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2567. [2022-07-14 00:05:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2567 states, 1917 states have (on average 1.3291601460615545) internal successors, (2548), 1970 states have internal predecessors, (2548), 477 states have call successors, (477), 173 states have call predecessors, (477), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-07-14 00:05:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 3510 transitions. [2022-07-14 00:05:49,988 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 3510 transitions. Word has length 96 [2022-07-14 00:05:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:05:49,989 INFO L495 AbstractCegarLoop]: Abstraction has 2567 states and 3510 transitions. [2022-07-14 00:05:49,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-14 00:05:49,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 3510 transitions. [2022-07-14 00:05:50,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-14 00:05:50,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:05:50,004 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:05:50,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 00:05:50,005 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:05:50,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:05:50,006 INFO L85 PathProgramCache]: Analyzing trace with hash -923273238, now seen corresponding path program 1 times [2022-07-14 00:05:50,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:05:50,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833914361] [2022-07-14 00:05:50,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:05:50,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:05:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:05:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:05:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:05:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:05:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:05:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:05:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:05:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:05:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:05:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:05:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:05:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:05:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-14 00:05:50,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:05:50,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833914361] [2022-07-14 00:05:50,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833914361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:05:50,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:05:50,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:05:50,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497388520] [2022-07-14 00:05:50,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:05:50,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:05:50,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:05:50,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:05:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:05:50,296 INFO L87 Difference]: Start difference. First operand 2567 states and 3510 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-14 00:05:51,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:05:51,692 INFO L93 Difference]: Finished difference Result 2873 states and 4006 transitions. [2022-07-14 00:05:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:05:51,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 97 [2022-07-14 00:05:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:05:51,707 INFO L225 Difference]: With dead ends: 2873 [2022-07-14 00:05:51,708 INFO L226 Difference]: Without dead ends: 2861 [2022-07-14 00:05:51,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:05:51,711 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 1051 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:05:51,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1259 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-14 00:05:51,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2022-07-14 00:05:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2557. [2022-07-14 00:05:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 1908 states have (on average 1.328616352201258) internal successors, (2535), 1960 states have internal predecessors, (2535), 476 states have call successors, (476), 173 states have call predecessors, (476), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-07-14 00:05:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3496 transitions. [2022-07-14 00:05:51,957 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3496 transitions. Word has length 97 [2022-07-14 00:05:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:05:51,958 INFO L495 AbstractCegarLoop]: Abstraction has 2557 states and 3496 transitions. [2022-07-14 00:05:51,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-14 00:05:51,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3496 transitions. [2022-07-14 00:05:51,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-14 00:05:51,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:05:51,978 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-07-14 00:05:51,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 00:05:51,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:05:51,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:05:51,979 INFO L85 PathProgramCache]: Analyzing trace with hash 956040723, now seen corresponding path program 1 times [2022-07-14 00:05:51,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:05:51,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214986740] [2022-07-14 00:05:51,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:05:51,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:05:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:05:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:05:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:05:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:05:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:05:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:05:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:05:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:05:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:05:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:05:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:05:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-14 00:05:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-14 00:05:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:05:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:05:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-14 00:05:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:05:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-14 00:05:52,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:05:52,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214986740] [2022-07-14 00:05:52,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214986740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:05:52,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:05:52,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:05:52,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106309352] [2022-07-14 00:05:52,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:05:52,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:05:52,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:05:52,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:05:52,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:05:52,422 INFO L87 Difference]: Start difference. First operand 2557 states and 3496 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 00:05:54,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:05:54,367 INFO L93 Difference]: Finished difference Result 6562 states and 9039 transitions. [2022-07-14 00:05:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 00:05:54,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 142 [2022-07-14 00:05:54,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:05:54,400 INFO L225 Difference]: With dead ends: 6562 [2022-07-14 00:05:54,415 INFO L226 Difference]: Without dead ends: 4030 [2022-07-14 00:05:54,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:05:54,429 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 1258 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:05:54,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 1955 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-14 00:05:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2022-07-14 00:05:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 3454. [2022-07-14 00:05:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 2577 states have (on average 1.3158711680248352) internal successors, (3391), 2641 states have internal predecessors, (3391), 627 states have call successors, (627), 244 states have call predecessors, (627), 249 states have return successors, (654), 624 states have call predecessors, (654), 626 states have call successors, (654) [2022-07-14 00:05:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 4672 transitions. [2022-07-14 00:05:54,757 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 4672 transitions. Word has length 142 [2022-07-14 00:05:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:05:54,757 INFO L495 AbstractCegarLoop]: Abstraction has 3454 states and 4672 transitions. [2022-07-14 00:05:54,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 00:05:54,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 4672 transitions. [2022-07-14 00:05:54,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-14 00:05:54,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:05:54,763 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 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] [2022-07-14 00:05:54,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 00:05:54,763 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:05:54,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:05:54,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1698287849, now seen corresponding path program 1 times [2022-07-14 00:05:54,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:05:54,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746694736] [2022-07-14 00:05:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:05:54,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:05:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:54,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:05:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:54,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:05:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:05:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:05:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:05:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:05:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:05:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:05:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:05:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:05:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:05:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:05:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:05:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-14 00:05:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-14 00:05:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:05:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:05:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:05:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-07-14 00:05:55,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:05:55,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746694736] [2022-07-14 00:05:55,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746694736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:05:55,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:05:55,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:05:55,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019271879] [2022-07-14 00:05:55,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:05:55,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:05:55,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:05:55,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:05:55,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:05:55,129 INFO L87 Difference]: Start difference. First operand 3454 states and 4672 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-14 00:05:58,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:05:58,228 INFO L93 Difference]: Finished difference Result 8434 states and 11517 transitions. [2022-07-14 00:05:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 00:05:58,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 159 [2022-07-14 00:05:58,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:05:58,290 INFO L225 Difference]: With dead ends: 8434 [2022-07-14 00:05:58,292 INFO L226 Difference]: Without dead ends: 5012 [2022-07-14 00:05:58,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:05:58,306 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 779 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 3336 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:05:58,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 3336 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-14 00:05:58,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2022-07-14 00:05:58,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 4368. [2022-07-14 00:05:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 3273 states have (on average 1.3104185762297587) internal successors, (4289), 3345 states have internal predecessors, (4289), 775 states have call successors, (775), 314 states have call predecessors, (775), 319 states have return successors, (802), 772 states have call predecessors, (802), 774 states have call successors, (802) [2022-07-14 00:05:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 5866 transitions. [2022-07-14 00:05:58,530 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 5866 transitions. Word has length 159 [2022-07-14 00:05:58,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:05:58,530 INFO L495 AbstractCegarLoop]: Abstraction has 4368 states and 5866 transitions. [2022-07-14 00:05:58,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-14 00:05:58,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 5866 transitions. [2022-07-14 00:05:58,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-14 00:05:58,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:05:58,539 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:05:58,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 00:05:58,539 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:05:58,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:05:58,540 INFO L85 PathProgramCache]: Analyzing trace with hash 920640794, now seen corresponding path program 1 times [2022-07-14 00:05:58,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:05:58,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964259067] [2022-07-14 00:05:58,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:05:58,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:05:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:05:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:05:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:05:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:05:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:05:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:05:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:05:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:05:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:05:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:05:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:05:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:05:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:05:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-14 00:05:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-14 00:05:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:05:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:05:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-14 00:05:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:05:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-07-14 00:05:58,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:05:58,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964259067] [2022-07-14 00:05:58,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964259067] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:05:58,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:05:58,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:05:58,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878873361] [2022-07-14 00:05:58,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:05:58,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:05:58,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:05:58,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:05:58,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:05:58,915 INFO L87 Difference]: Start difference. First operand 4368 states and 5866 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-14 00:06:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:01,299 INFO L93 Difference]: Finished difference Result 11672 states and 15829 transitions. [2022-07-14 00:06:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:06:01,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 173 [2022-07-14 00:06:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:01,353 INFO L225 Difference]: With dead ends: 11672 [2022-07-14 00:06:01,354 INFO L226 Difference]: Without dead ends: 7336 [2022-07-14 00:06:01,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:06:01,369 INFO L413 NwaCegarLoop]: 1434 mSDtfsCounter, 1488 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:01,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 2656 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-14 00:06:01,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7336 states. [2022-07-14 00:06:01,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7336 to 6198. [2022-07-14 00:06:01,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6198 states, 4669 states have (on average 1.3109873634611267) internal successors, (6121), 4773 states have internal predecessors, (6121), 1041 states have call successors, (1041), 476 states have call predecessors, (1041), 487 states have return successors, (1082), 1036 states have call predecessors, (1082), 1040 states have call successors, (1082) [2022-07-14 00:06:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6198 states to 6198 states and 8244 transitions. [2022-07-14 00:06:01,852 INFO L78 Accepts]: Start accepts. Automaton has 6198 states and 8244 transitions. Word has length 173 [2022-07-14 00:06:01,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:01,852 INFO L495 AbstractCegarLoop]: Abstraction has 6198 states and 8244 transitions. [2022-07-14 00:06:01,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-14 00:06:01,853 INFO L276 IsEmpty]: Start isEmpty. Operand 6198 states and 8244 transitions. [2022-07-14 00:06:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-14 00:06:01,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:01,860 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:06:01,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 00:06:01,861 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:01,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:01,861 INFO L85 PathProgramCache]: Analyzing trace with hash 465033403, now seen corresponding path program 1 times [2022-07-14 00:06:01,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:01,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341452375] [2022-07-14 00:06:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:01,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-14 00:06:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:06:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:06:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-14 00:06:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-07-14 00:06:02,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:02,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341452375] [2022-07-14 00:06:02,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341452375] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:06:02,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424113594] [2022-07-14 00:06:02,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:02,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:02,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:06:02,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:06:02,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 00:06:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:03,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 00:06:03,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:06:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-14 00:06:03,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:06:03,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424113594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:06:03,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:06:03,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-14 00:06:03,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985141545] [2022-07-14 00:06:03,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:06:03,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:06:03,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:03,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:06:03,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:06:03,498 INFO L87 Difference]: Start difference. First operand 6198 states and 8244 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-14 00:06:05,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:05,387 INFO L93 Difference]: Finished difference Result 18532 states and 24645 transitions. [2022-07-14 00:06:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:06:05,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 192 [2022-07-14 00:06:05,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:05,556 INFO L225 Difference]: With dead ends: 18532 [2022-07-14 00:06:05,556 INFO L226 Difference]: Without dead ends: 18524 [2022-07-14 00:06:05,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:06:05,586 INFO L413 NwaCegarLoop]: 1400 mSDtfsCounter, 2092 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:05,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 2916 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-14 00:06:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18524 states. [2022-07-14 00:06:06,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18524 to 18490. [2022-07-14 00:06:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18490 states, 13933 states have (on average 1.3122084260389004) internal successors, (18283), 14261 states have internal predecessors, (18283), 3097 states have call successors, (3097), 1424 states have call predecessors, (3097), 1459 states have return successors, (3222), 3068 states have call predecessors, (3222), 3096 states have call successors, (3222) [2022-07-14 00:06:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18490 states to 18490 states and 24602 transitions. [2022-07-14 00:06:07,000 INFO L78 Accepts]: Start accepts. Automaton has 18490 states and 24602 transitions. Word has length 192 [2022-07-14 00:06:07,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:07,001 INFO L495 AbstractCegarLoop]: Abstraction has 18490 states and 24602 transitions. [2022-07-14 00:06:07,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-14 00:06:07,002 INFO L276 IsEmpty]: Start isEmpty. Operand 18490 states and 24602 transitions. [2022-07-14 00:06:07,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-14 00:06:07,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:07,024 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:06:07,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 00:06:07,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-14 00:06:07,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:07,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:07,253 INFO L85 PathProgramCache]: Analyzing trace with hash -243441089, now seen corresponding path program 1 times [2022-07-14 00:06:07,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:07,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901728313] [2022-07-14 00:06:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:07,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-14 00:06:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:06:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:06:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-14 00:06:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-14 00:06:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:07,586 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-07-14 00:06:07,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:07,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901728313] [2022-07-14 00:06:07,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901728313] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:06:07,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269562205] [2022-07-14 00:06:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:07,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:07,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:06:07,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:06:07,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 00:06:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:08,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:06:08,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:06:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-07-14 00:06:08,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:06:08,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269562205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:06:08,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:06:08,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-14 00:06:08,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834816810] [2022-07-14 00:06:08,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:06:08,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:06:08,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:08,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:06:08,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:06:08,429 INFO L87 Difference]: Start difference. First operand 18490 states and 24602 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-14 00:06:09,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:09,074 INFO L93 Difference]: Finished difference Result 28218 states and 37558 transitions. [2022-07-14 00:06:09,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:06:09,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 202 [2022-07-14 00:06:09,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:09,175 INFO L225 Difference]: With dead ends: 28218 [2022-07-14 00:06:09,175 INFO L226 Difference]: Without dead ends: 9134 [2022-07-14 00:06:09,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:06:09,264 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 785 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:09,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1495 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 00:06:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9134 states. [2022-07-14 00:06:09,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9134 to 9134. [2022-07-14 00:06:09,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9134 states, 6874 states have (on average 1.3094268257201047) internal successors, (9001), 7038 states have internal predecessors, (9001), 1537 states have call successors, (1537), 705 states have call predecessors, (1537), 722 states have return successors, (1599), 1522 states have call predecessors, (1599), 1536 states have call successors, (1599) [2022-07-14 00:06:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9134 states to 9134 states and 12137 transitions. [2022-07-14 00:06:09,928 INFO L78 Accepts]: Start accepts. Automaton has 9134 states and 12137 transitions. Word has length 202 [2022-07-14 00:06:09,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:09,931 INFO L495 AbstractCegarLoop]: Abstraction has 9134 states and 12137 transitions. [2022-07-14 00:06:09,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-14 00:06:09,931 INFO L276 IsEmpty]: Start isEmpty. Operand 9134 states and 12137 transitions. [2022-07-14 00:06:09,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-14 00:06:09,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:09,946 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 4, 4, 4, 4, 4, 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] [2022-07-14 00:06:09,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-14 00:06:10,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-14 00:06:10,160 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:10,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:10,160 INFO L85 PathProgramCache]: Analyzing trace with hash 332784887, now seen corresponding path program 1 times [2022-07-14 00:06:10,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:10,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482583384] [2022-07-14 00:06:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:10,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-14 00:06:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:06:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:06:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-14 00:06:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 52 proven. 12 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-14 00:06:10,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:10,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482583384] [2022-07-14 00:06:10,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482583384] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:06:10,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562856772] [2022-07-14 00:06:10,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:10,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:10,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:06:10,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:06:10,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 00:06:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:11,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1973 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:06:11,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:06:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-07-14 00:06:11,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:06:11,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562856772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:06:11,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:06:11,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-14 00:06:11,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875893092] [2022-07-14 00:06:11,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:06:11,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:06:11,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:11,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:06:11,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:06:11,372 INFO L87 Difference]: Start difference. First operand 9134 states and 12137 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-14 00:06:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:11,738 INFO L93 Difference]: Finished difference Result 16910 states and 22515 transitions. [2022-07-14 00:06:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:06:11,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 206 [2022-07-14 00:06:11,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:11,858 INFO L225 Difference]: With dead ends: 16910 [2022-07-14 00:06:11,858 INFO L226 Difference]: Without dead ends: 8516 [2022-07-14 00:06:11,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:06:11,879 INFO L413 NwaCegarLoop]: 1270 mSDtfsCounter, 736 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:11,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1998 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 00:06:11,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8516 states. [2022-07-14 00:06:12,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8516 to 8508. [2022-07-14 00:06:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8508 states, 6407 states have (on average 1.3082565943499298) internal successors, (8382), 6564 states have internal predecessors, (8382), 1429 states have call successors, (1429), 654 states have call predecessors, (1429), 671 states have return successors, (1491), 1415 states have call predecessors, (1491), 1428 states have call successors, (1491) [2022-07-14 00:06:12,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8508 states to 8508 states and 11302 transitions. [2022-07-14 00:06:12,246 INFO L78 Accepts]: Start accepts. Automaton has 8508 states and 11302 transitions. Word has length 206 [2022-07-14 00:06:12,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:12,246 INFO L495 AbstractCegarLoop]: Abstraction has 8508 states and 11302 transitions. [2022-07-14 00:06:12,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-14 00:06:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 8508 states and 11302 transitions. [2022-07-14 00:06:12,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-14 00:06:12,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:12,262 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:06:12,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-14 00:06:12,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:12,476 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:12,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:12,476 INFO L85 PathProgramCache]: Analyzing trace with hash 903812828, now seen corresponding path program 1 times [2022-07-14 00:06:12,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:12,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164387120] [2022-07-14 00:06:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:12,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:06:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-14 00:06:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:06:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-14 00:06:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:06:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-14 00:06:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-14 00:06:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-14 00:06:12,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:12,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164387120] [2022-07-14 00:06:12,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164387120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:06:12,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:06:12,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:06:12,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675344027] [2022-07-14 00:06:12,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:06:12,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:06:12,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:12,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:06:12,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:06:12,743 INFO L87 Difference]: Start difference. First operand 8508 states and 11302 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-14 00:06:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:14,283 INFO L93 Difference]: Finished difference Result 17916 states and 24175 transitions. [2022-07-14 00:06:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 00:06:14,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 228 [2022-07-14 00:06:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:14,380 INFO L225 Difference]: With dead ends: 17916 [2022-07-14 00:06:14,381 INFO L226 Difference]: Without dead ends: 10148 [2022-07-14 00:06:14,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:06:14,425 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 1071 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:14,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1909 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-14 00:06:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10148 states. [2022-07-14 00:06:15,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10148 to 8514. [2022-07-14 00:06:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8514 states, 6413 states have (on average 1.307968189614845) internal successors, (8388), 6570 states have internal predecessors, (8388), 1429 states have call successors, (1429), 654 states have call predecessors, (1429), 671 states have return successors, (1491), 1415 states have call predecessors, (1491), 1428 states have call successors, (1491) [2022-07-14 00:06:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8514 states to 8514 states and 11308 transitions. [2022-07-14 00:06:15,078 INFO L78 Accepts]: Start accepts. Automaton has 8514 states and 11308 transitions. Word has length 228 [2022-07-14 00:06:15,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:15,079 INFO L495 AbstractCegarLoop]: Abstraction has 8514 states and 11308 transitions. [2022-07-14 00:06:15,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-14 00:06:15,080 INFO L276 IsEmpty]: Start isEmpty. Operand 8514 states and 11308 transitions. [2022-07-14 00:06:15,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-14 00:06:15,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:15,095 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:06:15,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-14 00:06:15,095 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:15,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:15,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1144284017, now seen corresponding path program 1 times [2022-07-14 00:06:15,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:15,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672614133] [2022-07-14 00:06:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:15,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-14 00:06:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:06:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:06:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-14 00:06:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-14 00:06:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:06:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-14 00:06:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-14 00:06:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 00:06:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-07-14 00:06:15,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:15,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672614133] [2022-07-14 00:06:15,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672614133] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:06:15,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499966089] [2022-07-14 00:06:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:15,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:15,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:06:15,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:06:15,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 00:06:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:15,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 2117 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:06:15,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:06:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-07-14 00:06:16,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:06:16,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499966089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:06:16,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:06:16,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-14 00:06:16,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253548333] [2022-07-14 00:06:16,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:06:16,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:06:16,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:16,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:06:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:06:16,126 INFO L87 Difference]: Start difference. First operand 8514 states and 11308 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-14 00:06:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:16,565 INFO L93 Difference]: Finished difference Result 20920 states and 27782 transitions. [2022-07-14 00:06:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:06:16,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 228 [2022-07-14 00:06:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:16,614 INFO L225 Difference]: With dead ends: 20920 [2022-07-14 00:06:16,614 INFO L226 Difference]: Without dead ends: 12442 [2022-07-14 00:06:16,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:06:16,640 INFO L413 NwaCegarLoop]: 1417 mSDtfsCounter, 820 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:16,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 2151 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 00:06:16,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12442 states. [2022-07-14 00:06:17,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12442 to 12057. [2022-07-14 00:06:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12057 states, 9185 states have (on average 1.3187806205770278) internal successors, (12113), 9412 states have internal predecessors, (12113), 1900 states have call successors, (1900), 942 states have call predecessors, (1900), 971 states have return successors, (1996), 1887 states have call predecessors, (1996), 1899 states have call successors, (1996) [2022-07-14 00:06:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12057 states to 12057 states and 16009 transitions. [2022-07-14 00:06:17,281 INFO L78 Accepts]: Start accepts. Automaton has 12057 states and 16009 transitions. Word has length 228 [2022-07-14 00:06:17,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:17,282 INFO L495 AbstractCegarLoop]: Abstraction has 12057 states and 16009 transitions. [2022-07-14 00:06:17,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-14 00:06:17,282 INFO L276 IsEmpty]: Start isEmpty. Operand 12057 states and 16009 transitions. [2022-07-14 00:06:17,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-14 00:06:17,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:17,295 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:06:17,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 00:06:17,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:17,512 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1127674664, now seen corresponding path program 1 times [2022-07-14 00:06:17,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:17,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542114930] [2022-07-14 00:06:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:06:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-14 00:06:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:06:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-14 00:06:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:06:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-14 00:06:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-14 00:06:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-14 00:06:17,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:17,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542114930] [2022-07-14 00:06:17,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542114930] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:06:17,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038210795] [2022-07-14 00:06:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:17,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:17,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:06:17,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:06:17,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 00:06:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:18,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 2154 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 00:06:18,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:06:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-07-14 00:06:18,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:06:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-14 00:06:18,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038210795] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:06:18,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:06:18,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-14 00:06:18,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717701061] [2022-07-14 00:06:18,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:06:18,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 00:06:18,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:18,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 00:06:18,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:06:18,434 INFO L87 Difference]: Start difference. First operand 12057 states and 16009 transitions. Second operand has 11 states, 11 states have (on average 15.0) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-14 00:06:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:20,232 INFO L93 Difference]: Finished difference Result 26404 states and 35600 transitions. [2022-07-14 00:06:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:06:20,233 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 230 [2022-07-14 00:06:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:20,284 INFO L225 Difference]: With dead ends: 26404 [2022-07-14 00:06:20,284 INFO L226 Difference]: Without dead ends: 14679 [2022-07-14 00:06:20,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:06:20,311 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 789 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 3481 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:20,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 3481 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-14 00:06:20,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14679 states. [2022-07-14 00:06:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14679 to 12117. [2022-07-14 00:06:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12117 states, 9245 states have (on average 1.3167117360735532) internal successors, (12173), 9472 states have internal predecessors, (12173), 1900 states have call successors, (1900), 942 states have call predecessors, (1900), 971 states have return successors, (1996), 1887 states have call predecessors, (1996), 1899 states have call successors, (1996) [2022-07-14 00:06:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12117 states to 12117 states and 16069 transitions. [2022-07-14 00:06:20,917 INFO L78 Accepts]: Start accepts. Automaton has 12117 states and 16069 transitions. Word has length 230 [2022-07-14 00:06:20,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:20,918 INFO L495 AbstractCegarLoop]: Abstraction has 12117 states and 16069 transitions. [2022-07-14 00:06:20,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-14 00:06:20,918 INFO L276 IsEmpty]: Start isEmpty. Operand 12117 states and 16069 transitions. [2022-07-14 00:06:20,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-14 00:06:20,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:20,932 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 2, 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] [2022-07-14 00:06:20,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-14 00:06:21,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-14 00:06:21,154 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:21,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:21,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1315042822, now seen corresponding path program 1 times [2022-07-14 00:06:21,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:21,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523650855] [2022-07-14 00:06:21,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:21,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-14 00:06:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:06:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:06:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-14 00:06:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-14 00:06:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-14 00:06:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-07-14 00:06:21,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:21,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523650855] [2022-07-14 00:06:21,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523650855] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:06:21,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879270480] [2022-07-14 00:06:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:21,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:21,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:06:21,486 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:06:21,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-14 00:06:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:21,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 2106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 00:06:21,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:06:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-07-14 00:06:22,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:06:22,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879270480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:06:22,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:06:22,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-14 00:06:22,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753156780] [2022-07-14 00:06:22,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:06:22,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:06:22,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:22,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:06:22,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:06:22,005 INFO L87 Difference]: Start difference. First operand 12117 states and 16069 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-14 00:06:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:22,506 INFO L93 Difference]: Finished difference Result 27830 states and 37662 transitions. [2022-07-14 00:06:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:06:22,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 234 [2022-07-14 00:06:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:22,552 INFO L225 Difference]: With dead ends: 27830 [2022-07-14 00:06:22,552 INFO L226 Difference]: Without dead ends: 16045 [2022-07-14 00:06:22,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:06:22,587 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 476 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:22,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 3157 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 00:06:22,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16045 states. [2022-07-14 00:06:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16045 to 12137. [2022-07-14 00:06:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12137 states, 9265 states have (on average 1.3160280626011873) internal successors, (12193), 9492 states have internal predecessors, (12193), 1900 states have call successors, (1900), 942 states have call predecessors, (1900), 971 states have return successors, (1996), 1887 states have call predecessors, (1996), 1899 states have call successors, (1996) [2022-07-14 00:06:23,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12137 states to 12137 states and 16089 transitions. [2022-07-14 00:06:23,352 INFO L78 Accepts]: Start accepts. Automaton has 12137 states and 16089 transitions. Word has length 234 [2022-07-14 00:06:23,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:23,353 INFO L495 AbstractCegarLoop]: Abstraction has 12137 states and 16089 transitions. [2022-07-14 00:06:23,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-14 00:06:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 12137 states and 16089 transitions. [2022-07-14 00:06:23,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-14 00:06:23,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:23,366 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:06:23,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-14 00:06:23,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-14 00:06:23,580 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:23,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:23,580 INFO L85 PathProgramCache]: Analyzing trace with hash 55874764, now seen corresponding path program 2 times [2022-07-14 00:06:23,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:23,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485113557] [2022-07-14 00:06:23,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:23,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:06:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-14 00:06:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:06:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-14 00:06:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:06:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-14 00:06:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-14 00:06:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-14 00:06:23,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:23,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485113557] [2022-07-14 00:06:23,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485113557] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:06:23,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245694987] [2022-07-14 00:06:23,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 00:06:23,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:23,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:06:23,904 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:06:23,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-14 00:06:24,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 00:06:24,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:06:24,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 2199 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 00:06:24,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:06:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-07-14 00:06:24,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:06:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-14 00:06:24,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245694987] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:06:24,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:06:24,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-07-14 00:06:24,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026670078] [2022-07-14 00:06:24,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:06:24,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-14 00:06:24,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:24,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-14 00:06:24,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-07-14 00:06:24,646 INFO L87 Difference]: Start difference. First operand 12137 states and 16089 transitions. Second operand has 17 states, 17 states have (on average 10.411764705882353) internal successors, (177), 13 states have internal predecessors, (177), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-14 00:06:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:26,868 INFO L93 Difference]: Finished difference Result 26624 states and 35850 transitions. [2022-07-14 00:06:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 00:06:26,869 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.411764705882353) internal successors, (177), 13 states have internal predecessors, (177), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 236 [2022-07-14 00:06:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:26,911 INFO L225 Difference]: With dead ends: 26624 [2022-07-14 00:06:26,911 INFO L226 Difference]: Without dead ends: 14819 [2022-07-14 00:06:26,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-07-14 00:06:26,937 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 510 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:26,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 4257 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-14 00:06:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14819 states. [2022-07-14 00:06:27,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14819 to 12257. [2022-07-14 00:06:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12257 states, 9385 states have (on average 1.3119872136387853) internal successors, (12313), 9612 states have internal predecessors, (12313), 1900 states have call successors, (1900), 942 states have call predecessors, (1900), 971 states have return successors, (1996), 1887 states have call predecessors, (1996), 1899 states have call successors, (1996) [2022-07-14 00:06:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12257 states to 12257 states and 16209 transitions. [2022-07-14 00:06:27,545 INFO L78 Accepts]: Start accepts. Automaton has 12257 states and 16209 transitions. Word has length 236 [2022-07-14 00:06:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:27,545 INFO L495 AbstractCegarLoop]: Abstraction has 12257 states and 16209 transitions. [2022-07-14 00:06:27,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.411764705882353) internal successors, (177), 13 states have internal predecessors, (177), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-14 00:06:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 12257 states and 16209 transitions. [2022-07-14 00:06:27,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-07-14 00:06:27,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:27,559 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:06:27,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-14 00:06:27,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:27,776 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:27,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1808796308, now seen corresponding path program 1 times [2022-07-14 00:06:27,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:27,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141716865] [2022-07-14 00:06:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:27,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-14 00:06:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-14 00:06:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:27,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-14 00:06:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:28,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-14 00:06:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:28,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:28,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:06:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:28,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-14 00:06:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-14 00:06:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:28,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-14 00:06:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:28,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-07-14 00:06:28,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:28,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141716865] [2022-07-14 00:06:28,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141716865] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:06:28,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593917173] [2022-07-14 00:06:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:28,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:28,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:06:28,168 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:06:28,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-14 00:06:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:28,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 00:06:28,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:06:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-14 00:06:28,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:06:28,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593917173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:06:28,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:06:28,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-14 00:06:28,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461206558] [2022-07-14 00:06:28,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:06:28,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:06:28,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:28,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:06:28,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:06:28,708 INFO L87 Difference]: Start difference. First operand 12257 states and 16209 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-14 00:06:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:29,849 INFO L93 Difference]: Finished difference Result 32821 states and 43714 transitions. [2022-07-14 00:06:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:06:29,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 244 [2022-07-14 00:06:29,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:29,921 INFO L225 Difference]: With dead ends: 32821 [2022-07-14 00:06:29,921 INFO L226 Difference]: Without dead ends: 20896 [2022-07-14 00:06:29,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:06:29,950 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 1013 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 4073 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:29,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 4073 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 00:06:29,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20896 states. [2022-07-14 00:06:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20896 to 16258. [2022-07-14 00:06:30,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16258 states, 12500 states have (on average 1.31168) internal successors, (16396), 12794 states have internal predecessors, (16396), 2477 states have call successors, (2477), 1242 states have call predecessors, (2477), 1280 states have return successors, (2601), 2453 states have call predecessors, (2601), 2476 states have call successors, (2601) [2022-07-14 00:06:30,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16258 states to 16258 states and 21474 transitions. [2022-07-14 00:06:30,814 INFO L78 Accepts]: Start accepts. Automaton has 16258 states and 21474 transitions. Word has length 244 [2022-07-14 00:06:30,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:30,814 INFO L495 AbstractCegarLoop]: Abstraction has 16258 states and 21474 transitions. [2022-07-14 00:06:30,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-14 00:06:30,815 INFO L276 IsEmpty]: Start isEmpty. Operand 16258 states and 21474 transitions. [2022-07-14 00:06:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-14 00:06:30,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:30,835 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:06:30,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-14 00:06:31,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-14 00:06:31,064 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:31,064 INFO L85 PathProgramCache]: Analyzing trace with hash 95063988, now seen corresponding path program 3 times [2022-07-14 00:06:31,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:31,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317973162] [2022-07-14 00:06:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:31,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:06:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-14 00:06:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:06:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-14 00:06:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:06:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-14 00:06:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-14 00:06:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-14 00:06:31,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:31,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317973162] [2022-07-14 00:06:31,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317973162] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:06:31,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116364960] [2022-07-14 00:06:31,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 00:06:31,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:31,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:06:31,501 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:06:31,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-14 00:06:31,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-14 00:06:31,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:06:31,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-14 00:06:31,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:06:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-07-14 00:06:32,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:06:32,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116364960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:06:32,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:06:32,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2022-07-14 00:06:32,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6297604] [2022-07-14 00:06:32,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:06:32,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:06:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:32,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:06:32,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-07-14 00:06:32,176 INFO L87 Difference]: Start difference. First operand 16258 states and 21474 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-14 00:06:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:33,044 INFO L93 Difference]: Finished difference Result 32332 states and 42817 transitions. [2022-07-14 00:06:33,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:06:33,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 248 [2022-07-14 00:06:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:33,103 INFO L225 Difference]: With dead ends: 32332 [2022-07-14 00:06:33,104 INFO L226 Difference]: Without dead ends: 16406 [2022-07-14 00:06:33,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2022-07-14 00:06:33,133 INFO L413 NwaCegarLoop]: 1258 mSDtfsCounter, 875 mSDsluCounter, 4599 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 5857 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:33,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 5857 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 00:06:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16406 states. [2022-07-14 00:06:33,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16406 to 16349. [2022-07-14 00:06:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16349 states, 12565 states have (on average 1.3100676482292082) internal successors, (16461), 12859 states have internal predecessors, (16461), 2490 states have call successors, (2490), 1242 states have call predecessors, (2490), 1293 states have return successors, (2695), 2479 states have call predecessors, (2695), 2489 states have call successors, (2695) [2022-07-14 00:06:33,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16349 states to 16349 states and 21646 transitions. [2022-07-14 00:06:34,000 INFO L78 Accepts]: Start accepts. Automaton has 16349 states and 21646 transitions. Word has length 248 [2022-07-14 00:06:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:34,000 INFO L495 AbstractCegarLoop]: Abstraction has 16349 states and 21646 transitions. [2022-07-14 00:06:34,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-14 00:06:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 16349 states and 21646 transitions. [2022-07-14 00:06:34,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-14 00:06:34,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:34,017 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 5, 5, 5, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:06:34,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-14 00:06:34,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:34,232 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:34,232 INFO L85 PathProgramCache]: Analyzing trace with hash 421302642, now seen corresponding path program 1 times [2022-07-14 00:06:34,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:34,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853526970] [2022-07-14 00:06:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:34,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:06:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-14 00:06:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:06:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-14 00:06:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-14 00:06:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-14 00:06:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-14 00:06:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-14 00:06:34,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:34,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853526970] [2022-07-14 00:06:34,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853526970] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:06:34,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501717603] [2022-07-14 00:06:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:34,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:34,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:06:34,647 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:06:34,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-14 00:06:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:35,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 2315 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 00:06:35,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:06:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 42 proven. 100 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-07-14 00:06:35,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:06:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-14 00:06:35,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501717603] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:06:35,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:06:35,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 29 [2022-07-14 00:06:35,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50388752] [2022-07-14 00:06:35,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:06:35,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-14 00:06:35,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:35,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-14 00:06:35,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=499, Unknown=0, NotChecked=0, Total=812 [2022-07-14 00:06:35,462 INFO L87 Difference]: Start difference. First operand 16349 states and 21646 transitions. Second operand has 29 states, 29 states have (on average 7.241379310344827) internal successors, (210), 25 states have internal predecessors, (210), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-14 00:06:37,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:37,375 INFO L93 Difference]: Finished difference Result 35975 states and 48320 transitions. [2022-07-14 00:06:37,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-14 00:06:37,375 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.241379310344827) internal successors, (210), 25 states have internal predecessors, (210), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 254 [2022-07-14 00:06:37,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:37,442 INFO L225 Difference]: With dead ends: 35975 [2022-07-14 00:06:37,442 INFO L226 Difference]: Without dead ends: 19958 [2022-07-14 00:06:37,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=319, Invalid=551, Unknown=0, NotChecked=0, Total=870 [2022-07-14 00:06:37,479 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 814 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:37,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 2907 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-14 00:06:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19958 states. [2022-07-14 00:06:38,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19958 to 16733. [2022-07-14 00:06:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16733 states, 12949 states have (on average 1.300872654259016) internal successors, (16845), 13243 states have internal predecessors, (16845), 2490 states have call successors, (2490), 1242 states have call predecessors, (2490), 1293 states have return successors, (2695), 2479 states have call predecessors, (2695), 2489 states have call successors, (2695) [2022-07-14 00:06:38,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16733 states to 16733 states and 22030 transitions. [2022-07-14 00:06:38,203 INFO L78 Accepts]: Start accepts. Automaton has 16733 states and 22030 transitions. Word has length 254 [2022-07-14 00:06:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:38,204 INFO L495 AbstractCegarLoop]: Abstraction has 16733 states and 22030 transitions. [2022-07-14 00:06:38,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.241379310344827) internal successors, (210), 25 states have internal predecessors, (210), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-14 00:06:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 16733 states and 22030 transitions. [2022-07-14 00:06:38,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-14 00:06:38,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:38,218 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:06:38,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-14 00:06:38,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:38,432 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:38,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1425368299, now seen corresponding path program 1 times [2022-07-14 00:06:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:38,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423354140] [2022-07-14 00:06:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:38,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:06:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-14 00:06:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-14 00:06:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-14 00:06:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-14 00:06:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-14 00:06:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-14 00:06:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-14 00:06:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-14 00:06:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-14 00:06:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-14 00:06:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-07-14 00:06:38,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:38,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423354140] [2022-07-14 00:06:38,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423354140] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:06:38,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:06:38,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-14 00:06:38,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827301604] [2022-07-14 00:06:38,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:06:38,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 00:06:38,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:38,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 00:06:38,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:06:38,736 INFO L87 Difference]: Start difference. First operand 16733 states and 22030 transitions. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 7 states have internal predecessors, (137), 4 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-14 00:06:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:43,883 INFO L93 Difference]: Finished difference Result 46804 states and 62912 transitions. [2022-07-14 00:06:43,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 00:06:43,883 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 7 states have internal predecessors, (137), 4 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 277 [2022-07-14 00:06:43,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:44,035 INFO L225 Difference]: With dead ends: 46804 [2022-07-14 00:06:44,036 INFO L226 Difference]: Without dead ends: 30403 [2022-07-14 00:06:44,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-07-14 00:06:44,089 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 2123 mSDsluCounter, 6001 mSDsCounter, 0 mSdLazyCounter, 5021 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2167 SdHoareTripleChecker+Valid, 7507 SdHoareTripleChecker+Invalid, 5776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 5021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:44,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2167 Valid, 7507 Invalid, 5776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 5021 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-14 00:06:44,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30403 states. [2022-07-14 00:06:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30403 to 16831. [2022-07-14 00:06:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16831 states, 13021 states have (on average 1.3004377543967438) internal successors, (16933), 13321 states have internal predecessors, (16933), 2516 states have call successors, (2516), 1242 states have call predecessors, (2516), 1293 states have return successors, (2721), 2499 states have call predecessors, (2721), 2515 states have call successors, (2721) [2022-07-14 00:06:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16831 states to 16831 states and 22170 transitions. [2022-07-14 00:06:45,177 INFO L78 Accepts]: Start accepts. Automaton has 16831 states and 22170 transitions. Word has length 277 [2022-07-14 00:06:45,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:45,178 INFO L495 AbstractCegarLoop]: Abstraction has 16831 states and 22170 transitions. [2022-07-14 00:06:45,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 7 states have internal predecessors, (137), 4 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-14 00:06:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 16831 states and 22170 transitions. [2022-07-14 00:06:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-14 00:06:45,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:45,189 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:06:45,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-14 00:06:45,190 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:45,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:45,190 INFO L85 PathProgramCache]: Analyzing trace with hash 472553282, now seen corresponding path program 2 times [2022-07-14 00:06:45,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:45,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257745932] [2022-07-14 00:06:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:45,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:06:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-14 00:06:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:06:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-14 00:06:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-14 00:06:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-14 00:06:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-14 00:06:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 38 proven. 484 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-14 00:06:45,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:45,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257745932] [2022-07-14 00:06:45,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257745932] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:06:45,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971332412] [2022-07-14 00:06:45,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 00:06:45,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:45,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:06:45,780 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:06:45,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-14 00:06:46,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 00:06:46,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:06:46,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-14 00:06:46,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:06:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 42 proven. 484 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-07-14 00:06:46,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:06:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 38 proven. 484 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-14 00:06:47,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971332412] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:06:47,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:06:47,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25, 25] total 53 [2022-07-14 00:06:47,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436944629] [2022-07-14 00:06:47,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:06:47,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-14 00:06:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:47,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-14 00:06:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=1567, Unknown=0, NotChecked=0, Total=2756 [2022-07-14 00:06:47,157 INFO L87 Difference]: Start difference. First operand 16831 states and 22170 transitions. Second operand has 53 states, 53 states have (on average 4.867924528301887) internal successors, (258), 49 states have internal predecessors, (258), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-14 00:06:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:50,513 INFO L93 Difference]: Finished difference Result 37323 states and 49944 transitions. [2022-07-14 00:06:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-14 00:06:50,513 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.867924528301887) internal successors, (258), 49 states have internal predecessors, (258), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 278 [2022-07-14 00:06:50,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:50,587 INFO L225 Difference]: With dead ends: 37323 [2022-07-14 00:06:50,587 INFO L226 Difference]: Without dead ends: 20824 [2022-07-14 00:06:50,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1195, Invalid=1667, Unknown=0, NotChecked=0, Total=2862 [2022-07-14 00:06:50,635 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 545 mSDsluCounter, 5032 mSDsCounter, 0 mSdLazyCounter, 3654 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 5899 SdHoareTripleChecker+Invalid, 4030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 3654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:50,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 5899 Invalid, 4030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 3654 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-14 00:06:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20824 states. [2022-07-14 00:06:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20824 to 17599. [2022-07-14 00:06:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17599 states, 13789 states have (on average 1.2837044020596127) internal successors, (17701), 14089 states have internal predecessors, (17701), 2516 states have call successors, (2516), 1242 states have call predecessors, (2516), 1293 states have return successors, (2721), 2499 states have call predecessors, (2721), 2515 states have call successors, (2721) [2022-07-14 00:06:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17599 states to 17599 states and 22938 transitions. [2022-07-14 00:06:51,741 INFO L78 Accepts]: Start accepts. Automaton has 17599 states and 22938 transitions. Word has length 278 [2022-07-14 00:06:51,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:06:51,741 INFO L495 AbstractCegarLoop]: Abstraction has 17599 states and 22938 transitions. [2022-07-14 00:06:51,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.867924528301887) internal successors, (258), 49 states have internal predecessors, (258), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-14 00:06:51,741 INFO L276 IsEmpty]: Start isEmpty. Operand 17599 states and 22938 transitions. [2022-07-14 00:06:51,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-07-14 00:06:51,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:06:51,750 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:06:51,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-14 00:06:51,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-14 00:06:51,951 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:06:51,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:06:51,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1825919714, now seen corresponding path program 3 times [2022-07-14 00:06:51,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:06:51,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660455352] [2022-07-14 00:06:51,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:06:51,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:06:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:06:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:06:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:06:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:06:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:06:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:06:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:06:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:06:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:06:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:06:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:06:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:06:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:06:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:06:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-14 00:06:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:06:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-14 00:06:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:06:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:06:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-14 00:06:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-14 00:06:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-07-14 00:06:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:06:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2491 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-14 00:06:53,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:06:53,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660455352] [2022-07-14 00:06:53,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660455352] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:06:53,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534221042] [2022-07-14 00:06:53,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 00:06:53,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:06:53,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:06:53,308 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:06:53,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-14 00:06:53,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-14 00:06:53,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:06:53,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-14 00:06:53,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:06:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2491 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2451 trivial. 0 not checked. [2022-07-14 00:06:54,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:06:54,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534221042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:06:54,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:06:54,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [53] total 65 [2022-07-14 00:06:54,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063029533] [2022-07-14 00:06:54,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:06:54,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 00:06:54,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:06:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 00:06:54,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1214, Invalid=2946, Unknown=0, NotChecked=0, Total=4160 [2022-07-14 00:06:54,400 INFO L87 Difference]: Start difference. First operand 17599 states and 22938 transitions. Second operand has 14 states, 13 states have (on average 10.307692307692308) internal successors, (134), 11 states have internal predecessors, (134), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-14 00:06:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:06:58,484 INFO L93 Difference]: Finished difference Result 49575 states and 66407 transitions. [2022-07-14 00:06:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-14 00:06:58,485 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.307692307692308) internal successors, (134), 11 states have internal predecessors, (134), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) Word has length 326 [2022-07-14 00:06:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:06:58,609 INFO L225 Difference]: With dead ends: 49575 [2022-07-14 00:06:58,609 INFO L226 Difference]: Without dead ends: 32308 [2022-07-14 00:06:58,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1291, Invalid=5029, Unknown=0, NotChecked=0, Total=6320 [2022-07-14 00:06:58,664 INFO L413 NwaCegarLoop]: 1726 mSDtfsCounter, 3135 mSDsluCounter, 19913 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3195 SdHoareTripleChecker+Valid, 21639 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:06:58,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3195 Valid, 21639 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-14 00:06:58,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32308 states. [2022-07-14 00:06:59,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32308 to 17586. [2022-07-14 00:06:59,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17586 states, 13776 states have (on average 1.2815040650406504) internal successors, (17654), 14076 states have internal predecessors, (17654), 2516 states have call successors, (2516), 1242 states have call predecessors, (2516), 1293 states have return successors, (2721), 2499 states have call predecessors, (2721), 2515 states have call successors, (2721) [2022-07-14 00:07:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17586 states to 17586 states and 22891 transitions. [2022-07-14 00:07:00,008 INFO L78 Accepts]: Start accepts. Automaton has 17586 states and 22891 transitions. Word has length 326 [2022-07-14 00:07:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:07:00,008 INFO L495 AbstractCegarLoop]: Abstraction has 17586 states and 22891 transitions. [2022-07-14 00:07:00,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.307692307692308) internal successors, (134), 11 states have internal predecessors, (134), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-14 00:07:00,009 INFO L276 IsEmpty]: Start isEmpty. Operand 17586 states and 22891 transitions. [2022-07-14 00:07:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-07-14 00:07:00,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:07:00,020 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:07:00,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-14 00:07:00,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-14 00:07:00,232 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:07:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:07:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1300667366, now seen corresponding path program 1 times [2022-07-14 00:07:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:07:00,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058732983] [2022-07-14 00:07:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:07:00,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:07:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:07:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:07:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:07:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:07:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:07:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:07:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:07:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:07:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:07:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:07:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:07:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:07:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:07:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:07:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-14 00:07:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:07:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-14 00:07:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-14 00:07:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-14 00:07:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-07-14 00:07:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-14 00:07:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-07-14 00:07:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-07-14 00:07:01,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:07:01,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058732983] [2022-07-14 00:07:01,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058732983] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:07:01,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031001729] [2022-07-14 00:07:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:07:01,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:07:01,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:07:01,596 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:07:01,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-14 00:07:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:02,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-14 00:07:02,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:07:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 46 proven. 2116 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-14 00:07:02,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:07:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-07-14 00:07:03,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031001729] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:07:03,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:07:03,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 49] total 72 [2022-07-14 00:07:03,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370440708] [2022-07-14 00:07:03,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:07:03,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-07-14 00:07:03,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:07:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-07-14 00:07:03,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2227, Invalid=2885, Unknown=0, NotChecked=0, Total=5112 [2022-07-14 00:07:03,212 INFO L87 Difference]: Start difference. First operand 17586 states and 22891 transitions. Second operand has 72 states, 72 states have (on average 4.388888888888889) internal successors, (316), 67 states have internal predecessors, (316), 2 states have call successors, (63), 7 states have call predecessors, (63), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-14 00:07:07,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:07:07,424 INFO L93 Difference]: Finished difference Result 38680 states and 51137 transitions. [2022-07-14 00:07:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-07-14 00:07:07,425 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.388888888888889) internal successors, (316), 67 states have internal predecessors, (316), 2 states have call successors, (63), 7 states have call predecessors, (63), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 346 [2022-07-14 00:07:07,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:07:07,481 INFO L225 Difference]: With dead ends: 38680 [2022-07-14 00:07:07,481 INFO L226 Difference]: Without dead ends: 21426 [2022-07-14 00:07:07,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2234, Invalid=3022, Unknown=0, NotChecked=0, Total=5256 [2022-07-14 00:07:07,511 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 714 mSDsluCounter, 4077 mSDsCounter, 0 mSdLazyCounter, 4635 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 4908 SdHoareTripleChecker+Invalid, 5008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 4635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:07:07,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 4908 Invalid, 5008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 4635 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-14 00:07:07,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21426 states. [2022-07-14 00:07:08,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21426 to 18162. [2022-07-14 00:07:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18162 states, 14352 states have (on average 1.27020624303233) internal successors, (18230), 14652 states have internal predecessors, (18230), 2516 states have call successors, (2516), 1242 states have call predecessors, (2516), 1293 states have return successors, (2721), 2499 states have call predecessors, (2721), 2515 states have call successors, (2721) [2022-07-14 00:07:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18162 states to 18162 states and 23467 transitions. [2022-07-14 00:07:08,842 INFO L78 Accepts]: Start accepts. Automaton has 18162 states and 23467 transitions. Word has length 346 [2022-07-14 00:07:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:07:08,842 INFO L495 AbstractCegarLoop]: Abstraction has 18162 states and 23467 transitions. [2022-07-14 00:07:08,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.388888888888889) internal successors, (316), 67 states have internal predecessors, (316), 2 states have call successors, (63), 7 states have call predecessors, (63), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-14 00:07:08,843 INFO L276 IsEmpty]: Start isEmpty. Operand 18162 states and 23467 transitions. [2022-07-14 00:07:08,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-07-14 00:07:08,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:07:08,858 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:07:08,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-14 00:07:09,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-14 00:07:09,075 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:07:09,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:07:09,076 INFO L85 PathProgramCache]: Analyzing trace with hash -470630702, now seen corresponding path program 2 times [2022-07-14 00:07:09,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:07:09,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510089855] [2022-07-14 00:07:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:07:09,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:07:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:07:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:07:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:07:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:07:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:07:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:07:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:07:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:07:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:07:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:07:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:07:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:07:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:07:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:07:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-14 00:07:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:07:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-14 00:07:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-14 00:07:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-07-14 00:07:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-07-14 00:07:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-07-14 00:07:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-07-14 00:07:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 4437 trivial. 0 not checked. [2022-07-14 00:07:09,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:07:09,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510089855] [2022-07-14 00:07:09,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510089855] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:07:09,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105048354] [2022-07-14 00:07:09,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 00:07:09,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:07:09,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:07:09,785 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:07:09,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-14 00:07:10,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 00:07:10,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:07:10,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 3226 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-14 00:07:10,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:07:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 4401 trivial. 0 not checked. [2022-07-14 00:07:11,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:07:11,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105048354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:07:11,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:07:11,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [13] total 20 [2022-07-14 00:07:11,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133739149] [2022-07-14 00:07:11,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:07:11,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 00:07:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:07:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 00:07:11,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-07-14 00:07:11,012 INFO L87 Difference]: Start difference. First operand 18162 states and 23467 transitions. Second operand has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 6 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-14 00:07:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:07:14,600 INFO L93 Difference]: Finished difference Result 59527 states and 78157 transitions. [2022-07-14 00:07:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-14 00:07:14,601 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 6 states have call predecessors, (28), 3 states have call successors, (28) Word has length 382 [2022-07-14 00:07:14,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:07:14,718 INFO L225 Difference]: With dead ends: 59527 [2022-07-14 00:07:14,718 INFO L226 Difference]: Without dead ends: 41697 [2022-07-14 00:07:14,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2022-07-14 00:07:14,764 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 1867 mSDsluCounter, 16685 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1918 SdHoareTripleChecker+Valid, 18036 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:07:14,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1918 Valid, 18036 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-14 00:07:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41697 states. [2022-07-14 00:07:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41697 to 26294. [2022-07-14 00:07:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26294 states, 20739 states have (on average 1.2703601909445972) internal successors, (26346), 21154 states have internal predecessors, (26346), 3660 states have call successors, (3660), 1796 states have call predecessors, (3660), 1894 states have return successors, (4013), 3686 states have call predecessors, (4013), 3659 states have call successors, (4013) [2022-07-14 00:07:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26294 states to 26294 states and 34019 transitions. [2022-07-14 00:07:16,823 INFO L78 Accepts]: Start accepts. Automaton has 26294 states and 34019 transitions. Word has length 382 [2022-07-14 00:07:16,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:07:16,824 INFO L495 AbstractCegarLoop]: Abstraction has 26294 states and 34019 transitions. [2022-07-14 00:07:16,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 6 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-14 00:07:16,825 INFO L276 IsEmpty]: Start isEmpty. Operand 26294 states and 34019 transitions. [2022-07-14 00:07:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-07-14 00:07:16,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:07:16,848 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:07:16,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-14 00:07:17,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:07:17,076 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:07:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:07:17,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1474355948, now seen corresponding path program 3 times [2022-07-14 00:07:17,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:07:17,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650407235] [2022-07-14 00:07:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:07:17,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:07:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:07:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:07:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:07:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:07:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:07:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:07:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:07:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:07:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:07:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:07:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:07:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:07:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:07:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:07:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-14 00:07:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:07:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-14 00:07:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-14 00:07:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-14 00:07:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:17,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-07-14 00:07:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:18,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-07-14 00:07:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-07-14 00:07:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 4441 trivial. 0 not checked. [2022-07-14 00:07:18,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:07:18,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650407235] [2022-07-14 00:07:18,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650407235] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:07:18,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35794877] [2022-07-14 00:07:18,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 00:07:18,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:07:18,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:07:18,122 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:07:18,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-14 00:07:18,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-14 00:07:18,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:07:18,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 72 conjunts are in the unsatisfiable core [2022-07-14 00:07:18,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:07:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 4435 trivial. 0 not checked. [2022-07-14 00:07:19,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:07:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 4447 trivial. 0 not checked. [2022-07-14 00:07:20,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35794877] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-14 00:07:20,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-14 00:07:20,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20, 16] total 30 [2022-07-14 00:07:20,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404290657] [2022-07-14 00:07:20,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:07:20,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 00:07:20,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:07:20,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 00:07:20,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-07-14 00:07:20,007 INFO L87 Difference]: Start difference. First operand 26294 states and 34019 transitions. Second operand has 11 states, 10 states have (on average 14.4) internal successors, (144), 9 states have internal predecessors, (144), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-14 00:07:26,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:07:26,642 INFO L93 Difference]: Finished difference Result 65448 states and 84729 transitions. [2022-07-14 00:07:26,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 00:07:26,643 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 14.4) internal successors, (144), 9 states have internal predecessors, (144), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 388 [2022-07-14 00:07:26,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:07:26,768 INFO L225 Difference]: With dead ends: 65448 [2022-07-14 00:07:26,769 INFO L226 Difference]: Without dead ends: 39486 [2022-07-14 00:07:26,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 813 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-07-14 00:07:26,822 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 3851 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 3625 mSolverCounterSat, 1186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3897 SdHoareTripleChecker+Valid, 3927 SdHoareTripleChecker+Invalid, 4811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 3625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:07:26,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3897 Valid, 3927 Invalid, 4811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1186 Valid, 3625 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-14 00:07:26,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39486 states. [2022-07-14 00:07:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39486 to 38912. [2022-07-14 00:07:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38912 states, 30700 states have (on average 1.2696742671009773) internal successors, (38979), 31312 states have internal predecessors, (38979), 5423 states have call successors, (5423), 2660 states have call predecessors, (5423), 2788 states have return successors, (5939), 5451 states have call predecessors, (5939), 5422 states have call successors, (5939) [2022-07-14 00:07:30,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38912 states to 38912 states and 50341 transitions. [2022-07-14 00:07:30,448 INFO L78 Accepts]: Start accepts. Automaton has 38912 states and 50341 transitions. Word has length 388 [2022-07-14 00:07:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:07:30,449 INFO L495 AbstractCegarLoop]: Abstraction has 38912 states and 50341 transitions. [2022-07-14 00:07:30,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 14.4) internal successors, (144), 9 states have internal predecessors, (144), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-14 00:07:30,449 INFO L276 IsEmpty]: Start isEmpty. Operand 38912 states and 50341 transitions. [2022-07-14 00:07:30,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-07-14 00:07:30,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:07:30,491 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:07:30,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-14 00:07:30,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-14 00:07:30,692 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:07:30,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:07:30,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1178527864, now seen corresponding path program 1 times [2022-07-14 00:07:30,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:07:30,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013797474] [2022-07-14 00:07:30,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:07:30,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:07:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:07:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:07:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:07:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:07:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:07:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:07:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:07:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:07:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:07:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:07:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:07:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:07:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:07:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:07:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-14 00:07:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:07:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-14 00:07:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-07-14 00:07:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-07-14 00:07:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-14 00:07:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-14 00:07:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-14 00:07:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-14 00:07:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-07-14 00:07:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-07-14 00:07:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-07-14 00:07:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 4499 trivial. 0 not checked. [2022-07-14 00:07:31,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:07:31,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013797474] [2022-07-14 00:07:31,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013797474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:07:31,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:07:31,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-14 00:07:31,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310390340] [2022-07-14 00:07:31,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:07:31,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 00:07:31,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:07:31,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 00:07:31,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:07:31,232 INFO L87 Difference]: Start difference. First operand 38912 states and 50341 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 7 states have internal predecessors, (150), 4 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-14 00:07:40,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:07:40,603 INFO L93 Difference]: Finished difference Result 108338 states and 144132 transitions. [2022-07-14 00:07:40,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-14 00:07:40,603 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 7 states have internal predecessors, (150), 4 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 428 [2022-07-14 00:07:40,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:07:40,926 INFO L225 Difference]: With dead ends: 108338 [2022-07-14 00:07:40,926 INFO L226 Difference]: Without dead ends: 69763 [2022-07-14 00:07:40,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2022-07-14 00:07:40,994 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 1998 mSDsluCounter, 6393 mSDsCounter, 0 mSdLazyCounter, 5270 mSolverCounterSat, 793 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 8026 SdHoareTripleChecker+Invalid, 6063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 793 IncrementalHoareTripleChecker+Valid, 5270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:07:40,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 8026 Invalid, 6063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [793 Valid, 5270 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-14 00:07:41,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69763 states. [2022-07-14 00:07:44,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69763 to 38864. [2022-07-14 00:07:44,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38864 states, 30676 states have (on average 1.269885252314513) internal successors, (38955), 31288 states have internal predecessors, (38955), 5399 states have call successors, (5399), 2660 states have call predecessors, (5399), 2788 states have return successors, (5915), 5427 states have call predecessors, (5915), 5398 states have call successors, (5915) [2022-07-14 00:07:44,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38864 states to 38864 states and 50269 transitions. [2022-07-14 00:07:44,864 INFO L78 Accepts]: Start accepts. Automaton has 38864 states and 50269 transitions. Word has length 428 [2022-07-14 00:07:44,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:07:44,865 INFO L495 AbstractCegarLoop]: Abstraction has 38864 states and 50269 transitions. [2022-07-14 00:07:44,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 7 states have internal predecessors, (150), 4 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-14 00:07:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 38864 states and 50269 transitions. [2022-07-14 00:07:44,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-07-14 00:07:44,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:07:44,904 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:07:44,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-14 00:07:44,904 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:07:44,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:07:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash -431751801, now seen corresponding path program 1 times [2022-07-14 00:07:44,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:07:44,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780344051] [2022-07-14 00:07:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:07:44,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:07:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:07:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:07:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:07:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:07:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:07:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:07:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:07:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:07:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:07:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:07:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:07:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:07:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:07:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:07:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-14 00:07:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:07:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-07-14 00:07:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-07-14 00:07:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-07-14 00:07:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-07-14 00:07:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-07-14 00:07:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-14 00:07:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-07-14 00:07:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:07:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-14 00:07:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-07-14 00:07:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-07-14 00:07:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-07-14 00:07:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:07:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 4494 trivial. 0 not checked. [2022-07-14 00:07:45,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:07:45,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780344051] [2022-07-14 00:07:45,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780344051] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:07:45,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715528556] [2022-07-14 00:07:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:07:45,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:07:45,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:07:45,910 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:07:45,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-14 00:07:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:51,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 3532 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-14 00:07:51,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:07:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 4480 trivial. 0 not checked. [2022-07-14 00:07:51,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:07:51,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715528556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:07:51,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:07:51,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2022-07-14 00:07:51,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855359532] [2022-07-14 00:07:51,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:07:51,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:07:51,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:07:51,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:07:51,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2022-07-14 00:07:51,531 INFO L87 Difference]: Start difference. First operand 38864 states and 50269 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-14 00:07:59,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:07:59,049 INFO L93 Difference]: Finished difference Result 114899 states and 152128 transitions. [2022-07-14 00:07:59,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 00:07:59,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 437 [2022-07-14 00:07:59,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:07:59,261 INFO L225 Difference]: With dead ends: 114899 [2022-07-14 00:07:59,261 INFO L226 Difference]: Without dead ends: 76372 [2022-07-14 00:07:59,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-07-14 00:07:59,333 INFO L413 NwaCegarLoop]: 2132 mSDtfsCounter, 2180 mSDsluCounter, 9758 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 11890 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:07:59,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2293 Valid, 11890 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-14 00:07:59,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76372 states. [2022-07-14 00:08:02,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76372 to 38848. [2022-07-14 00:08:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38848 states, 30676 states have (on average 1.2693636719259356) internal successors, (38939), 31272 states have internal predecessors, (38939), 5383 states have call successors, (5383), 2660 states have call predecessors, (5383), 2788 states have return successors, (5899), 5411 states have call predecessors, (5899), 5382 states have call successors, (5899) [2022-07-14 00:08:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38848 states to 38848 states and 50221 transitions. [2022-07-14 00:08:03,086 INFO L78 Accepts]: Start accepts. Automaton has 38848 states and 50221 transitions. Word has length 437 [2022-07-14 00:08:03,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:03,087 INFO L495 AbstractCegarLoop]: Abstraction has 38848 states and 50221 transitions. [2022-07-14 00:08:03,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-14 00:08:03,087 INFO L276 IsEmpty]: Start isEmpty. Operand 38848 states and 50221 transitions. [2022-07-14 00:08:03,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2022-07-14 00:08:03,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:03,124 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:03,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-07-14 00:08:03,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-14 00:08:03,332 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:03,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:03,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1444315117, now seen corresponding path program 1 times [2022-07-14 00:08:03,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:08:03,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581087852] [2022-07-14 00:08:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:03,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:08:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:08:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:08:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:08:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:08:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:08:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:08:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:08:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:08:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:08:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:08:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:08:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:08:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:08:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 00:08:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:08:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:08:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:08:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-14 00:08:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:08:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:08:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-07-14 00:08:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-07-14 00:08:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-07-14 00:08:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-07-14 00:08:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-07-14 00:08:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-14 00:08:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-07-14 00:08:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:08:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:08:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-14 00:08:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-07-14 00:08:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:08:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-07-14 00:08:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-07-14 00:08:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-07-14 00:08:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-07-14 00:08:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:08:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 84 proven. 4 refuted. 0 times theorem prover too weak. 4504 trivial. 0 not checked. [2022-07-14 00:08:04,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:08:04,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581087852] [2022-07-14 00:08:04,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581087852] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:08:04,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21549679] [2022-07-14 00:08:04,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:04,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:08:04,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:08:04,564 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:08:04,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-14 00:08:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:15,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 3632 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-14 00:08:15,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 4488 trivial. 0 not checked. [2022-07-14 00:08:15,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:15,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21549679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:15,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:08:15,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20] total 27 [2022-07-14 00:08:15,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674827867] [2022-07-14 00:08:15,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:15,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 00:08:15,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:08:15,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 00:08:15,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-07-14 00:08:15,904 INFO L87 Difference]: Start difference. First operand 38848 states and 50221 transitions. Second operand has 11 states, 10 states have (on average 17.6) internal successors, (176), 9 states have internal predecessors, (176), 5 states have call successors, (37), 4 states have call predecessors, (37), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36)