./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.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 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:39:18,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:39:18,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:39:18,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:39:18,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:39:18,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:39:18,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:39:18,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:39:18,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:39:18,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:39:18,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:39:18,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:39:18,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:39:18,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:39:18,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:39:18,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:39:18,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:39:18,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:39:18,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:39:18,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:39:18,507 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:39:18,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:39:18,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:39:18,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:39:18,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:39:18,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:39:18,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:39:18,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:39:18,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:39:18,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:39:18,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:39:18,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:39:18,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:39:18,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:39:18,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:39:18,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:39:18,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:39:18,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:39:18,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:39:18,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:39:18,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:39:18,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:39:18,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 12:39:18,566 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:39:18,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:39:18,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:39:18,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:39:18,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:39:18,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:39:18,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:39:18,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:39:18,569 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:39:18,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:39:18,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 12:39:18,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:39:18,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:39:18,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:39:18,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:39:18,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:39:18,571 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:39:18,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:39:18,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:39:18,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:39:18,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:39:18,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:39:18,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:39:18,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:39:18,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:39:18,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 12:39:18,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 12:39:18,572 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:39:18,572 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:39:18,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:39:18,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e [2022-07-21 12:39:18,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:39:18,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:39:18,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:39:18,892 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:39:18,893 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:39:18,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2022-07-21 12:39:18,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c750a14/f14532f5774040e79ab8f7e7fd6b1ac3/FLAG7115b043a [2022-07-21 12:39:19,601 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:39:19,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2022-07-21 12:39:19,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c750a14/f14532f5774040e79ab8f7e7fd6b1ac3/FLAG7115b043a [2022-07-21 12:39:19,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c750a14/f14532f5774040e79ab8f7e7fd6b1ac3 [2022-07-21 12:39:19,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:39:19,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:39:19,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:39:19,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:39:19,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:39:19,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:39:19" (1/1) ... [2022-07-21 12:39:19,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2742aa69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:19, skipping insertion in model container [2022-07-21 12:39:19,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:39:19" (1/1) ... [2022-07-21 12:39:19,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:39:19,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:39:21,384 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2022-07-21 12:39:21,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:39:21,472 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:39:21,697 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2022-07-21 12:39:21,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:39:21,763 INFO L208 MainTranslator]: Completed translation [2022-07-21 12:39:21,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:21 WrapperNode [2022-07-21 12:39:21,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 12:39:21,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 12:39:21,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 12:39:21,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 12:39:21,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:21" (1/1) ... [2022-07-21 12:39:21,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:21" (1/1) ... [2022-07-21 12:39:22,016 INFO L137 Inliner]: procedures = 228, calls = 2012, calls flagged for inlining = 106, calls inlined = 86, statements flattened = 2912 [2022-07-21 12:39:22,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 12:39:22,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 12:39:22,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 12:39:22,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 12:39:22,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:21" (1/1) ... [2022-07-21 12:39:22,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:21" (1/1) ... [2022-07-21 12:39:22,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:21" (1/1) ... [2022-07-21 12:39:22,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:21" (1/1) ... [2022-07-21 12:39:22,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:21" (1/1) ... [2022-07-21 12:39:22,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:21" (1/1) ... [2022-07-21 12:39:22,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:21" (1/1) ... [2022-07-21 12:39:22,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 12:39:22,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 12:39:22,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 12:39:22,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 12:39:22,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:21" (1/1) ... [2022-07-21 12:39:22,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:39:22,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:39:22,285 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) [2022-07-21 12:39:22,303 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 [2022-07-21 12:39:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure insb [2022-07-21 12:39:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure insb [2022-07-21 12:39:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure WriteW6692 [2022-07-21 12:39:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteW6692 [2022-07-21 12:39:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_clear_bchannel [2022-07-21 12:39:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_clear_bchannel [2022-07-21 12:39:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 12:39:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 12:39:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 12:39:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 12:39:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-21 12:39:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-21 12:39:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 12:39:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 12:39:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_unregister_device [2022-07-21 12:39:22,325 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_unregister_device [2022-07-21 12:39:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure ReadW6692 [2022-07-21 12:39:22,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadW6692 [2022-07-21 12:39:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure W6692B_interrupt [2022-07-21 12:39:22,325 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692B_interrupt [2022-07-21 12:39:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-07-21 12:39:22,325 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-07-21 12:39:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure outsb [2022-07-21 12:39:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure outsb [2022-07-21 12:39:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 12:39:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 12:39:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 12:39:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 12:39:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_empty_Bfifo [2022-07-21 12:39:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_empty_Bfifo [2022-07-21 12:39:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-21 12:39:22,327 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-21 12:39:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_fill_Bfifo [2022-07-21 12:39:22,327 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_fill_Bfifo [2022-07-21 12:39:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure ReadW6692B [2022-07-21 12:39:22,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadW6692B [2022-07-21 12:39:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-21 12:39:22,327 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-21 12:39:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_empty_Dfifo [2022-07-21 12:39:22,328 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_empty_Dfifo [2022-07-21 12:39:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 12:39:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 12:39:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-21 12:39:22,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-21 12:39:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 12:39:22,328 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 12:39:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 12:39:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 12:39:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-21 12:39:22,329 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-21 12:39:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_led_handler [2022-07-21 12:39:22,329 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_led_handler [2022-07-21 12:39:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure send_next [2022-07-21 12:39:22,329 INFO L138 BoogieDeclarations]: Found implementation of procedure send_next [2022-07-21 12:39:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-21 12:39:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-21 12:39:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-21 12:39:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-21 12:39:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure WriteW6692B [2022-07-21 12:39:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteW6692B [2022-07-21 12:39:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freebchannel [2022-07-21 12:39:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freebchannel [2022-07-21 12:39:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freedchannel [2022-07-21 12:39:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freedchannel [2022-07-21 12:39:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 12:39:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure ph_command [2022-07-21 12:39:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_command [2022-07-21 12:39:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 12:39:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 12:39:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-21 12:39:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-21 12:39:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-21 12:39:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-21 12:39:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure _set_debug [2022-07-21 12:39:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure _set_debug [2022-07-21 12:39:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-07-21 12:39:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-07-21 12:39:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 12:39:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 12:39:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-07-21 12:39:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-07-21 12:39:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure disable_hwirq [2022-07-21 12:39:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_hwirq [2022-07-21 12:39:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 12:39:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_probe [2022-07-21 12:39:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_probe [2022-07-21 12:39:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-07-21 12:39:22,334 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-07-21 12:39:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2022-07-21 12:39:22,334 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2022-07-21 12:39:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 12:39:22,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 12:39:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-21 12:39:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-21 12:39:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 12:39:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-21 12:39:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-21 12:39:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_3 [2022-07-21 12:39:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_3 [2022-07-21 12:39:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-21 12:39:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-21 12:39:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 12:39:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure recv_Bchannel [2022-07-21 12:39:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure recv_Bchannel [2022-07-21 12:39:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irqsave [2022-07-21 12:39:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irqsave [2022-07-21 12:39:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 12:39:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-21 12:39:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-21 12:39:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2022-07-21 12:39:22,337 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2022-07-21 12:39:22,337 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irqrestore [2022-07-21 12:39:22,337 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irqrestore [2022-07-21 12:39:22,337 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_fill_Dfifo [2022-07-21 12:39:22,337 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_fill_Dfifo [2022-07-21 12:39:22,338 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_mode [2022-07-21 12:39:22,338 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_mode [2022-07-21 12:39:22,338 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_dframe [2022-07-21 12:39:22,339 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_dframe [2022-07-21 12:39:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure mI_alloc_skb [2022-07-21 12:39:22,341 INFO L138 BoogieDeclarations]: Found implementation of procedure mI_alloc_skb [2022-07-21 12:39:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-21 12:39:22,341 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-21 12:39:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure l1_event [2022-07-21 12:39:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_event [2022-07-21 12:39:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-07-21 12:39:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-07-21 12:39:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-07-21 12:39:22,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-07-21 12:39:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 12:39:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-07-21 12:39:22,347 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-07-21 12:39:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 12:39:22,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 12:39:22,826 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 12:39:22,828 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 12:39:23,686 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 12:39:24,842 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 12:39:24,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 12:39:24,859 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 12:39:24,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:39:24 BoogieIcfgContainer [2022-07-21 12:39:24,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 12:39:24,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 12:39:24,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 12:39:24,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 12:39:24,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:39:19" (1/3) ... [2022-07-21 12:39:24,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7303b435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:39:24, skipping insertion in model container [2022-07-21 12:39:24,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:39:21" (2/3) ... [2022-07-21 12:39:24,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7303b435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:39:24, skipping insertion in model container [2022-07-21 12:39:24,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:39:24" (3/3) ... [2022-07-21 12:39:24,869 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2022-07-21 12:39:24,879 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 12:39:24,879 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 12:39:24,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 12:39:24,963 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@1cee9574, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@541bf022 [2022-07-21 12:39:24,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 12:39:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 1020 states, 692 states have (on average 1.3482658959537572) internal successors, (933), 726 states have internal predecessors, (933), 266 states have call successors, (266), 61 states have call predecessors, (266), 60 states have return successors, (260), 254 states have call predecessors, (260), 260 states have call successors, (260) [2022-07-21 12:39:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 12:39:24,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:24,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:24,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash 982112823, now seen corresponding path program 1 times [2022-07-21 12:39:24,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:39:24,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123157433] [2022-07-21 12:39:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:24,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:39:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:25,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:39:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:25,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:25,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:39:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:25,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:25,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:39:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:25,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:25,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 12:39:25,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:39:25,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123157433] [2022-07-21 12:39:25,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123157433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:25,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:25,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:39:25,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286618544] [2022-07-21 12:39:25,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:25,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 12:39:25,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:39:25,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 12:39:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 12:39:25,475 INFO L87 Difference]: Start difference. First operand has 1020 states, 692 states have (on average 1.3482658959537572) internal successors, (933), 726 states have internal predecessors, (933), 266 states have call successors, (266), 61 states have call predecessors, (266), 60 states have return successors, (260), 254 states have call predecessors, (260), 260 states have call successors, (260) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 12:39:27,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:27,249 INFO L93 Difference]: Finished difference Result 2062 states and 2974 transitions. [2022-07-21 12:39:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 12:39:27,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 63 [2022-07-21 12:39:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:27,271 INFO L225 Difference]: With dead ends: 2062 [2022-07-21 12:39:27,272 INFO L226 Difference]: Without dead ends: 1030 [2022-07-21 12:39:27,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 12:39:27,288 INFO L413 NwaCegarLoop]: 1399 mSDtfsCounter, 328 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:27,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 2092 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 12:39:27,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-07-21 12:39:27,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1003. [2022-07-21 12:39:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 683 states have (on average 1.3250366032210834) internal successors, (905), 709 states have internal predecessors, (905), 260 states have call successors, (260), 60 states have call predecessors, (260), 59 states have return successors, (259), 253 states have call predecessors, (259), 259 states have call successors, (259) [2022-07-21 12:39:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1424 transitions. [2022-07-21 12:39:27,393 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1424 transitions. Word has length 63 [2022-07-21 12:39:27,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:27,393 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1424 transitions. [2022-07-21 12:39:27,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 12:39:27,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1424 transitions. [2022-07-21 12:39:27,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 12:39:27,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:27,400 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:27,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 12:39:27,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:27,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1308437617, now seen corresponding path program 1 times [2022-07-21 12:39:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:39:27,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077128098] [2022-07-21 12:39:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:27,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:39:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:27,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:39:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:27,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:27,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:39:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:27,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:27,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:39:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:27,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 12:39:27,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:39:27,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077128098] [2022-07-21 12:39:27,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077128098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:27,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:27,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:39:27,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803682693] [2022-07-21 12:39:27,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:27,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:39:27,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:39:27,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:39:27,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:39:27,624 INFO L87 Difference]: Start difference. First operand 1003 states and 1424 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 12:39:29,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:29,866 INFO L93 Difference]: Finished difference Result 2697 states and 3834 transitions. [2022-07-21 12:39:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:39:29,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2022-07-21 12:39:29,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:29,876 INFO L225 Difference]: With dead ends: 2697 [2022-07-21 12:39:29,876 INFO L226 Difference]: Without dead ends: 1703 [2022-07-21 12:39:29,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 12:39:29,881 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 1309 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 3331 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:29,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 3331 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 12:39:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2022-07-21 12:39:29,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1650. [2022-07-21 12:39:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1136 states have (on average 1.3397887323943662) internal successors, (1522), 1186 states have internal predecessors, (1522), 413 states have call successors, (413), 101 states have call predecessors, (413), 100 states have return successors, (412), 400 states have call predecessors, (412), 412 states have call successors, (412) [2022-07-21 12:39:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2347 transitions. [2022-07-21 12:39:29,937 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2347 transitions. Word has length 63 [2022-07-21 12:39:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:29,938 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2347 transitions. [2022-07-21 12:39:29,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 12:39:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2347 transitions. [2022-07-21 12:39:29,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 12:39:29,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:29,940 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-21 12:39:29,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 12:39:29,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:29,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:29,941 INFO L85 PathProgramCache]: Analyzing trace with hash 866229186, now seen corresponding path program 1 times [2022-07-21 12:39:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:39:29,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446906725] [2022-07-21 12:39:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:29,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:39:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:39:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:39:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:39:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 12:39:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 12:39:30,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:39:30,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446906725] [2022-07-21 12:39:30,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446906725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:30,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:30,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:39:30,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787955633] [2022-07-21 12:39:30,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:30,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:39:30,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:39:30,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:39:30,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:39:30,122 INFO L87 Difference]: Start difference. First operand 1650 states and 2347 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 12:39:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:32,324 INFO L93 Difference]: Finished difference Result 3331 states and 4744 transitions. [2022-07-21 12:39:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 12:39:32,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 93 [2022-07-21 12:39:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:32,338 INFO L225 Difference]: With dead ends: 3331 [2022-07-21 12:39:32,339 INFO L226 Difference]: Without dead ends: 1699 [2022-07-21 12:39:32,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:39:32,348 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 171 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 3744 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:32,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 3744 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 12:39:32,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-07-21 12:39:32,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1650. [2022-07-21 12:39:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1136 states have (on average 1.3389084507042253) internal successors, (1521), 1186 states have internal predecessors, (1521), 413 states have call successors, (413), 101 states have call predecessors, (413), 100 states have return successors, (412), 400 states have call predecessors, (412), 412 states have call successors, (412) [2022-07-21 12:39:32,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2346 transitions. [2022-07-21 12:39:32,403 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2346 transitions. Word has length 93 [2022-07-21 12:39:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:32,405 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2346 transitions. [2022-07-21 12:39:32,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 12:39:32,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2346 transitions. [2022-07-21 12:39:32,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 12:39:32,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:32,408 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-21 12:39:32,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 12:39:32,410 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:32,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:32,411 INFO L85 PathProgramCache]: Analyzing trace with hash 324092267, now seen corresponding path program 1 times [2022-07-21 12:39:32,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:39:32,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541032977] [2022-07-21 12:39:32,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:32,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:39:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:39:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:39:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:39:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 12:39:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 12:39:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-21 12:39:32,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:39:32,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541032977] [2022-07-21 12:39:32,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541032977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:32,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:32,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:39:32,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810351074] [2022-07-21 12:39:32,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:32,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:39:32,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:39:32,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:39:32,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:39:32,738 INFO L87 Difference]: Start difference. First operand 1650 states and 2346 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 12:39:35,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:35,514 INFO L93 Difference]: Finished difference Result 1738 states and 2451 transitions. [2022-07-21 12:39:35,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:39:35,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2022-07-21 12:39:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:35,530 INFO L225 Difference]: With dead ends: 1738 [2022-07-21 12:39:35,531 INFO L226 Difference]: Without dead ends: 1735 [2022-07-21 12:39:35,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 12:39:35,535 INFO L413 NwaCegarLoop]: 1391 mSDtfsCounter, 556 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:35,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 3409 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 12:39:35,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2022-07-21 12:39:35,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1684. [2022-07-21 12:39:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1159 states have (on average 1.3330457290767903) internal successors, (1545), 1209 states have internal predecessors, (1545), 416 states have call successors, (416), 109 states have call predecessors, (416), 108 states have return successors, (415), 403 states have call predecessors, (415), 415 states have call successors, (415) [2022-07-21 12:39:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2376 transitions. [2022-07-21 12:39:35,659 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2376 transitions. Word has length 110 [2022-07-21 12:39:35,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:35,660 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2376 transitions. [2022-07-21 12:39:35,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 12:39:35,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2376 transitions. [2022-07-21 12:39:35,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 12:39:35,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:35,665 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:39:35,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 12:39:35,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:35,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:35,666 INFO L85 PathProgramCache]: Analyzing trace with hash 647215035, now seen corresponding path program 1 times [2022-07-21 12:39:35,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:39:35,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471432623] [2022-07-21 12:39:35,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:35,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:39:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:39:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:35,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:39:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:35,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:35,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:39:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:35,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:35,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 12:39:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:35,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 12:39:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:36,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:36,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 12:39:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:36,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 12:39:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 12:39:36,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:39:36,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471432623] [2022-07-21 12:39:36,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471432623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:36,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:36,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 12:39:36,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131394896] [2022-07-21 12:39:36,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:36,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 12:39:36,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:39:36,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 12:39:36,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:39:36,019 INFO L87 Difference]: Start difference. First operand 1684 states and 2376 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 12:39:42,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:42,211 INFO L93 Difference]: Finished difference Result 5164 states and 7313 transitions. [2022-07-21 12:39:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 12:39:42,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 108 [2022-07-21 12:39:42,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:42,231 INFO L225 Difference]: With dead ends: 5164 [2022-07-21 12:39:42,231 INFO L226 Difference]: Without dead ends: 3503 [2022-07-21 12:39:42,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-07-21 12:39:42,241 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 2363 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 5341 mSolverCounterSat, 1654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2612 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 6995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1654 IncrementalHoareTripleChecker+Valid, 5341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:42,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2612 Valid, 4454 Invalid, 6995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1654 Valid, 5341 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-21 12:39:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2022-07-21 12:39:42,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 3378. [2022-07-21 12:39:42,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 2316 states have (on average 1.3320379965457685) internal successors, (3085), 2426 states have internal predecessors, (3085), 844 states have call successors, (844), 216 states have call predecessors, (844), 217 states have return successors, (850), 811 states have call predecessors, (850), 843 states have call successors, (850) [2022-07-21 12:39:42,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 4779 transitions. [2022-07-21 12:39:42,412 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 4779 transitions. Word has length 108 [2022-07-21 12:39:42,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:42,413 INFO L495 AbstractCegarLoop]: Abstraction has 3378 states and 4779 transitions. [2022-07-21 12:39:42,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 12:39:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 4779 transitions. [2022-07-21 12:39:42,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 12:39:42,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:42,423 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:39:42,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 12:39:42,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:42,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2050401391, now seen corresponding path program 1 times [2022-07-21 12:39:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:39:42,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882041843] [2022-07-21 12:39:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:42,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:39:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:39:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:39:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:39:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 12:39:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 12:39:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 12:39:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 12:39:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 12:39:42,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:39:42,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882041843] [2022-07-21 12:39:42,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882041843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:42,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:42,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 12:39:42,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740672796] [2022-07-21 12:39:42,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:42,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 12:39:42,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:39:42,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 12:39:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:39:42,624 INFO L87 Difference]: Start difference. First operand 3378 states and 4779 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 12:39:48,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:48,416 INFO L93 Difference]: Finished difference Result 10334 states and 14644 transitions. [2022-07-21 12:39:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 12:39:48,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 109 [2022-07-21 12:39:48,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:48,459 INFO L225 Difference]: With dead ends: 10334 [2022-07-21 12:39:48,460 INFO L226 Difference]: Without dead ends: 6979 [2022-07-21 12:39:48,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-07-21 12:39:48,475 INFO L413 NwaCegarLoop]: 1456 mSDtfsCounter, 2350 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 5379 mSolverCounterSat, 1569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 4785 SdHoareTripleChecker+Invalid, 6948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1569 IncrementalHoareTripleChecker+Valid, 5379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:48,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2600 Valid, 4785 Invalid, 6948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1569 Valid, 5379 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-21 12:39:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6979 states. [2022-07-21 12:39:48,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6979 to 6736. [2022-07-21 12:39:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6736 states, 4622 states have (on average 1.331674599740372) internal successors, (6155), 4840 states have internal predecessors, (6155), 1680 states have call successors, (1680), 430 states have call predecessors, (1680), 433 states have return successors, (1705), 1617 states have call predecessors, (1705), 1679 states have call successors, (1705) [2022-07-21 12:39:48,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6736 states to 6736 states and 9540 transitions. [2022-07-21 12:39:48,827 INFO L78 Accepts]: Start accepts. Automaton has 6736 states and 9540 transitions. Word has length 109 [2022-07-21 12:39:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:48,828 INFO L495 AbstractCegarLoop]: Abstraction has 6736 states and 9540 transitions. [2022-07-21 12:39:48,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 12:39:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 6736 states and 9540 transitions. [2022-07-21 12:39:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 12:39:48,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:48,831 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:39:48,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 12:39:48,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:48,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1782059666, now seen corresponding path program 1 times [2022-07-21 12:39:48,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:39:48,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211482803] [2022-07-21 12:39:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:48,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:39:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:39:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:39:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:49,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:39:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:49,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:49,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 12:39:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 12:39:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:49,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:49,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 12:39:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 12:39:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 12:39:49,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:39:49,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211482803] [2022-07-21 12:39:49,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211482803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:49,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:49,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 12:39:49,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928747008] [2022-07-21 12:39:49,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:49,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 12:39:49,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:39:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 12:39:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:39:49,084 INFO L87 Difference]: Start difference. First operand 6736 states and 9540 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 12:39:54,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:54,497 INFO L93 Difference]: Finished difference Result 20658 states and 29280 transitions. [2022-07-21 12:39:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 12:39:54,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2022-07-21 12:39:54,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:54,605 INFO L225 Difference]: With dead ends: 20658 [2022-07-21 12:39:54,605 INFO L226 Difference]: Without dead ends: 13945 [2022-07-21 12:39:54,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-07-21 12:39:54,688 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 2352 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 5355 mSolverCounterSat, 1637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2602 SdHoareTripleChecker+Valid, 4472 SdHoareTripleChecker+Invalid, 6992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1637 IncrementalHoareTripleChecker+Valid, 5355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:54,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2602 Valid, 4472 Invalid, 6992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1637 Valid, 5355 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-21 12:39:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13945 states. [2022-07-21 12:39:55,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13945 to 13462. [2022-07-21 12:39:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13462 states, 9244 states have (on average 1.331133708351363) internal successors, (12305), 9676 states have internal predecessors, (12305), 3350 states have call successors, (3350), 860 states have call predecessors, (3350), 867 states have return successors, (3430), 3229 states have call predecessors, (3430), 3349 states have call successors, (3430) [2022-07-21 12:39:55,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13462 states to 13462 states and 19085 transitions. [2022-07-21 12:39:55,120 INFO L78 Accepts]: Start accepts. Automaton has 13462 states and 19085 transitions. Word has length 111 [2022-07-21 12:39:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:55,120 INFO L495 AbstractCegarLoop]: Abstraction has 13462 states and 19085 transitions. [2022-07-21 12:39:55,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 12:39:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 13462 states and 19085 transitions. [2022-07-21 12:39:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 12:39:55,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:55,122 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:39:55,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 12:39:55,123 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:55,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:55,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1194853762, now seen corresponding path program 1 times [2022-07-21 12:39:55,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:39:55,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48303298] [2022-07-21 12:39:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:55,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:39:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:39:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:39:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:39:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:39:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 12:39:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 12:39:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:39:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:39:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 12:39:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 12:39:55,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:39:55,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48303298] [2022-07-21 12:39:55,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48303298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:55,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:55,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 12:39:55,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537026497] [2022-07-21 12:39:55,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:55,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 12:39:55,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:39:55,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 12:39:55,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:39:55,369 INFO L87 Difference]: Start difference. First operand 13462 states and 19085 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 12:40:00,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:00,563 INFO L93 Difference]: Finished difference Result 40185 states and 56953 transitions. [2022-07-21 12:40:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 12:40:00,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2022-07-21 12:40:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:00,743 INFO L225 Difference]: With dead ends: 40185 [2022-07-21 12:40:00,744 INFO L226 Difference]: Without dead ends: 26746 [2022-07-21 12:40:00,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-07-21 12:40:00,806 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 2665 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 4478 mSolverCounterSat, 2189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2915 SdHoareTripleChecker+Valid, 4075 SdHoareTripleChecker+Invalid, 6667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2189 IncrementalHoareTripleChecker+Valid, 4478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:00,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2915 Valid, 4075 Invalid, 6667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2189 Valid, 4478 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-21 12:40:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26746 states. [2022-07-21 12:40:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26746 to 25833. [2022-07-21 12:40:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25833 states, 17752 states have (on average 1.3287516899504281) internal successors, (23588), 18560 states have internal predecessors, (23588), 6403 states have call successors, (6403), 1662 states have call predecessors, (6403), 1677 states have return successors, (6631), 6182 states have call predecessors, (6631), 6402 states have call successors, (6631) [2022-07-21 12:40:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25833 states to 25833 states and 36622 transitions. [2022-07-21 12:40:01,905 INFO L78 Accepts]: Start accepts. Automaton has 25833 states and 36622 transitions. Word has length 110 [2022-07-21 12:40:01,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:40:01,907 INFO L495 AbstractCegarLoop]: Abstraction has 25833 states and 36622 transitions. [2022-07-21 12:40:01,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 12:40:01,907 INFO L276 IsEmpty]: Start isEmpty. Operand 25833 states and 36622 transitions. [2022-07-21 12:40:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-21 12:40:01,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:40:01,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:40:01,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 12:40:01,911 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:40:01,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:40:01,912 INFO L85 PathProgramCache]: Analyzing trace with hash 528683235, now seen corresponding path program 1 times [2022-07-21 12:40:01,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:40:01,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122722176] [2022-07-21 12:40:01,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:01,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:40:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:40:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:40:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:40:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 12:40:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 12:40:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:40:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 12:40:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 12:40:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-21 12:40:02,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:40:02,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122722176] [2022-07-21 12:40:02,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122722176] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 12:40:02,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296825310] [2022-07-21 12:40:02,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:02,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 12:40:02,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:40:02,224 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) [2022-07-21 12:40:02,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 12:40:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:02,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 12:40:02,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:02,960 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 12:40:02,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:40:02,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296825310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:40:02,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 12:40:02,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-21 12:40:02,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411013129] [2022-07-21 12:40:02,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:40:02,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 12:40:02,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:40:02,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 12:40:02,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-21 12:40:02,967 INFO L87 Difference]: Start difference. First operand 25833 states and 36622 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 12:40:04,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:04,121 INFO L93 Difference]: Finished difference Result 64365 states and 91250 transitions. [2022-07-21 12:40:04,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 12:40:04,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2022-07-21 12:40:04,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:04,313 INFO L225 Difference]: With dead ends: 64365 [2022-07-21 12:40:04,314 INFO L226 Difference]: Without dead ends: 38555 [2022-07-21 12:40:04,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-07-21 12:40:04,407 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 1445 mSDsluCounter, 10760 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 13100 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:04,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 13100 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:40:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38555 states. [2022-07-21 12:40:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38555 to 34251. [2022-07-21 12:40:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34251 states, 23586 states have (on average 1.326210463834478) internal successors, (31280), 24614 states have internal predecessors, (31280), 8428 states have call successors, (8428), 2197 states have call predecessors, (8428), 2236 states have return successors, (8863), 8153 states have call predecessors, (8863), 8427 states have call successors, (8863) [2022-07-21 12:40:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34251 states to 34251 states and 48571 transitions. [2022-07-21 12:40:05,812 INFO L78 Accepts]: Start accepts. Automaton has 34251 states and 48571 transitions. Word has length 121 [2022-07-21 12:40:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:40:05,813 INFO L495 AbstractCegarLoop]: Abstraction has 34251 states and 48571 transitions. [2022-07-21 12:40:05,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 12:40:05,813 INFO L276 IsEmpty]: Start isEmpty. Operand 34251 states and 48571 transitions. [2022-07-21 12:40:05,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-21 12:40:05,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:40:05,816 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:40:05,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 12:40:06,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 12:40:06,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:40:06,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:40:06,040 INFO L85 PathProgramCache]: Analyzing trace with hash 166828212, now seen corresponding path program 1 times [2022-07-21 12:40:06,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:40:06,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769746131] [2022-07-21 12:40:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:06,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:40:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:40:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:40:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:40:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 12:40:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 12:40:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 12:40:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 12:40:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 12:40:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 12:40:06,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:40:06,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769746131] [2022-07-21 12:40:06,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769746131] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 12:40:06,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843755331] [2022-07-21 12:40:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:06,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 12:40:06,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:40:06,364 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) [2022-07-21 12:40:06,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 12:40:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:07,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 12:40:07,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 12:40:07,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:40:07,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843755331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:40:07,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 12:40:07,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-07-21 12:40:07,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805410201] [2022-07-21 12:40:07,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:40:07,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 12:40:07,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:40:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 12:40:07,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-21 12:40:07,267 INFO L87 Difference]: Start difference. First operand 34251 states and 48571 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 12:40:08,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:08,645 INFO L93 Difference]: Finished difference Result 85316 states and 120976 transitions. [2022-07-21 12:40:08,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 12:40:08,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 122 [2022-07-21 12:40:08,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:08,925 INFO L225 Difference]: With dead ends: 85316 [2022-07-21 12:40:08,926 INFO L226 Difference]: Without dead ends: 51088 [2022-07-21 12:40:09,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-07-21 12:40:09,028 INFO L413 NwaCegarLoop]: 2417 mSDtfsCounter, 1445 mSDsluCounter, 11056 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 13473 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:09,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 13473 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:40:09,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51088 states. [2022-07-21 12:40:10,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51088 to 42709. [2022-07-21 12:40:10,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42709 states, 29444 states have (on average 1.3244124439614182) internal successors, (38996), 30716 states have internal predecessors, (38996), 10453 states have call successors, (10453), 2732 states have call predecessors, (10453), 2811 states have return successors, (11103), 10116 states have call predecessors, (11103), 10452 states have call successors, (11103) [2022-07-21 12:40:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42709 states to 42709 states and 60552 transitions. [2022-07-21 12:40:10,640 INFO L78 Accepts]: Start accepts. Automaton has 42709 states and 60552 transitions. Word has length 122 [2022-07-21 12:40:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:40:10,641 INFO L495 AbstractCegarLoop]: Abstraction has 42709 states and 60552 transitions. [2022-07-21 12:40:10,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 12:40:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand 42709 states and 60552 transitions. [2022-07-21 12:40:10,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 12:40:10,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:40:10,644 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:40:10,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 12:40:10,859 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,SelfDestructingSolverStorable9 [2022-07-21 12:40:10,859 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:40:10,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:40:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash -38075638, now seen corresponding path program 1 times [2022-07-21 12:40:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:40:10,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562488312] [2022-07-21 12:40:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:10,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:40:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:10,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:40:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:40:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:40:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 12:40:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 12:40:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 12:40:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 12:40:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 12:40:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 12:40:11,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:40:11,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562488312] [2022-07-21 12:40:11,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562488312] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 12:40:11,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763106544] [2022-07-21 12:40:11,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:11,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 12:40:11,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:40:11,301 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) [2022-07-21 12:40:11,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 12:40:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:11,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 12:40:11,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 12:40:11,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:40:11,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763106544] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:40:11,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 12:40:11,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-07-21 12:40:11,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978861277] [2022-07-21 12:40:11,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:40:11,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 12:40:11,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:40:11,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 12:40:11,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-21 12:40:11,962 INFO L87 Difference]: Start difference. First operand 42709 states and 60552 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 12:40:13,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:13,469 INFO L93 Difference]: Finished difference Result 102213 states and 144908 transitions. [2022-07-21 12:40:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 12:40:13,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 123 [2022-07-21 12:40:13,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:13,868 INFO L225 Difference]: With dead ends: 102213 [2022-07-21 12:40:13,868 INFO L226 Difference]: Without dead ends: 59527 [2022-07-21 12:40:13,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-07-21 12:40:13,978 INFO L413 NwaCegarLoop]: 2421 mSDtfsCounter, 1445 mSDsluCounter, 11072 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 13493 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:13,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 13493 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:40:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59527 states. [2022-07-21 12:40:15,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59527 to 42741. [2022-07-21 12:40:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42741 states, 29468 states have (on average 1.3241482285869417) internal successors, (39020), 30740 states have internal predecessors, (39020), 10453 states have call successors, (10453), 2732 states have call predecessors, (10453), 2819 states have return successors, (11115), 10124 states have call predecessors, (11115), 10452 states have call successors, (11115) [2022-07-21 12:40:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42741 states to 42741 states and 60588 transitions. [2022-07-21 12:40:15,625 INFO L78 Accepts]: Start accepts. Automaton has 42741 states and 60588 transitions. Word has length 123 [2022-07-21 12:40:15,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:40:15,626 INFO L495 AbstractCegarLoop]: Abstraction has 42741 states and 60588 transitions. [2022-07-21 12:40:15,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 12:40:15,626 INFO L276 IsEmpty]: Start isEmpty. Operand 42741 states and 60588 transitions. [2022-07-21 12:40:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 12:40:15,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:40:15,651 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:40:15,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 12:40:15,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 12:40:15,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:40:15,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:40:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash 327539579, now seen corresponding path program 1 times [2022-07-21 12:40:15,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:40:15,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603042859] [2022-07-21 12:40:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:15,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:40:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:40:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:40:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:40:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 12:40:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 12:40:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 12:40:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 12:40:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 12:40:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,365 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 12:40:16,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:40:16,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603042859] [2022-07-21 12:40:16,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603042859] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 12:40:16,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280150289] [2022-07-21 12:40:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:16,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 12:40:16,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:40:16,367 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) [2022-07-21 12:40:16,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 12:40:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:16,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 12:40:17,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 12:40:17,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:40:17,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280150289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:40:17,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 12:40:17,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-07-21 12:40:17,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119301185] [2022-07-21 12:40:17,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:40:17,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 12:40:17,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:40:17,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 12:40:17,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-21 12:40:17,079 INFO L87 Difference]: Start difference. First operand 42741 states and 60588 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 12:40:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:18,607 INFO L93 Difference]: Finished difference Result 102261 states and 144960 transitions. [2022-07-21 12:40:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 12:40:18,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 124 [2022-07-21 12:40:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:18,856 INFO L225 Difference]: With dead ends: 102261 [2022-07-21 12:40:18,856 INFO L226 Difference]: Without dead ends: 59543 [2022-07-21 12:40:19,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-07-21 12:40:19,120 INFO L413 NwaCegarLoop]: 2421 mSDtfsCounter, 1445 mSDsluCounter, 11072 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 13493 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:19,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 13493 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:40:19,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59543 states. [2022-07-21 12:40:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59543 to 42761. [2022-07-21 12:40:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42761 states, 29484 states have (on average 1.323972323972324) internal successors, (39036), 30752 states have internal predecessors, (39036), 10453 states have call successors, (10453), 2732 states have call predecessors, (10453), 2823 states have return successors, (11119), 10132 states have call predecessors, (11119), 10452 states have call successors, (11119) [2022-07-21 12:40:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42761 states to 42761 states and 60608 transitions. [2022-07-21 12:40:20,743 INFO L78 Accepts]: Start accepts. Automaton has 42761 states and 60608 transitions. Word has length 124 [2022-07-21 12:40:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:40:20,744 INFO L495 AbstractCegarLoop]: Abstraction has 42761 states and 60608 transitions. [2022-07-21 12:40:20,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 12:40:20,744 INFO L276 IsEmpty]: Start isEmpty. Operand 42761 states and 60608 transitions. [2022-07-21 12:40:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-21 12:40:20,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:40:20,775 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:40:20,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 12:40:21,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 12:40:21,000 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:40:21,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:40:21,001 INFO L85 PathProgramCache]: Analyzing trace with hash -360061446, now seen corresponding path program 1 times [2022-07-21 12:40:21,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:40:21,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750175647] [2022-07-21 12:40:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:21,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:40:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:40:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:40:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:40:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:40:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 12:40:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 12:40:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 12:40:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 12:40:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:40:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 12:40:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 12:40:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-21 12:40:21,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:40:21,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750175647] [2022-07-21 12:40:21,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750175647] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 12:40:21,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016091271] [2022-07-21 12:40:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:21,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 12:40:21,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:40:21,377 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) [2022-07-21 12:40:21,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 12:40:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:21,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 3163 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 12:40:21,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:22,097 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-21 12:40:22,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:40:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-21 12:40:22,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016091271] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:40:22,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 12:40:22,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-07-21 12:40:22,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499577293] [2022-07-21 12:40:22,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 12:40:22,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 12:40:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:40:22,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 12:40:22,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-07-21 12:40:22,361 INFO L87 Difference]: Start difference. First operand 42761 states and 60608 transitions. Second operand has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 15 states have internal predecessors, (132), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-21 12:41:03,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:41:03,467 INFO L93 Difference]: Finished difference Result 129878 states and 184072 transitions. [2022-07-21 12:41:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-07-21 12:41:03,468 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 15 states have internal predecessors, (132), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 137 [2022-07-21 12:41:03,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:41:04,021 INFO L225 Difference]: With dead ends: 129878 [2022-07-21 12:41:04,021 INFO L226 Difference]: Without dead ends: 86776 [2022-07-21 12:41:04,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 312 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6695 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2752, Invalid=15338, Unknown=0, NotChecked=0, Total=18090 [2022-07-21 12:41:04,149 INFO L413 NwaCegarLoop]: 3687 mSDtfsCounter, 9077 mSDsluCounter, 17042 mSDsCounter, 0 mSdLazyCounter, 47751 mSolverCounterSat, 7748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9441 SdHoareTripleChecker+Valid, 20729 SdHoareTripleChecker+Invalid, 55499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7748 IncrementalHoareTripleChecker+Valid, 47751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:41:04,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9441 Valid, 20729 Invalid, 55499 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7748 Valid, 47751 Invalid, 0 Unknown, 0 Unchecked, 34.3s Time] [2022-07-21 12:41:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86776 states. [2022-07-21 12:41:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86776 to 71646. [2022-07-21 12:41:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71646 states, 49315 states have (on average 1.3213423907533204) internal successors, (65162), 51365 states have internal predecessors, (65162), 17642 states have call successors, (17642), 4555 states have call predecessors, (17642), 4688 states have return successors, (18737), 17108 states have call predecessors, (18737), 17641 states have call successors, (18737) [2022-07-21 12:41:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71646 states to 71646 states and 101541 transitions. [2022-07-21 12:41:07,190 INFO L78 Accepts]: Start accepts. Automaton has 71646 states and 101541 transitions. Word has length 137 [2022-07-21 12:41:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:41:07,191 INFO L495 AbstractCegarLoop]: Abstraction has 71646 states and 101541 transitions. [2022-07-21 12:41:07,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 15 states have internal predecessors, (132), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-21 12:41:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand 71646 states and 101541 transitions. [2022-07-21 12:41:07,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-21 12:41:07,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:41:07,202 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:41:07,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-21 12:41:07,408 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,SelfDestructingSolverStorable12 [2022-07-21 12:41:07,408 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:41:07,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:41:07,409 INFO L85 PathProgramCache]: Analyzing trace with hash -125844252, now seen corresponding path program 1 times [2022-07-21 12:41:07,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:41:07,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55528106] [2022-07-21 12:41:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:41:07,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:41:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:41:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:41:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:41:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:41:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:41:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:41:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:41:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:41:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:41:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 12:41:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 12:41:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 12:41:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:41:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:41:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:41:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 12:41:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-21 12:41:07,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:41:07,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55528106] [2022-07-21 12:41:07,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55528106] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 12:41:07,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418453963] [2022-07-21 12:41:07,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:41:07,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 12:41:07,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:41:07,642 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) [2022-07-21 12:41:07,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 12:41:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:08,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 3165 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 12:41:08,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:41:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-21 12:41:08,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:41:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-21 12:41:08,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418453963] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:41:08,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 12:41:08,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-07-21 12:41:08,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367787267] [2022-07-21 12:41:08,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 12:41:08,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 12:41:08,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:41:08,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 12:41:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-07-21 12:41:08,537 INFO L87 Difference]: Start difference. First operand 71646 states and 101541 transitions. Second operand has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 15 states have internal predecessors, (134), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-21 12:41:43,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:41:43,649 INFO L93 Difference]: Finished difference Result 209738 states and 296653 transitions. [2022-07-21 12:41:43,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-07-21 12:41:43,649 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 15 states have internal predecessors, (134), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 138 [2022-07-21 12:41:43,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:41:44,265 INFO L225 Difference]: With dead ends: 209738 [2022-07-21 12:41:44,265 INFO L226 Difference]: Without dead ends: 137541 [2022-07-21 12:41:44,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6809 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2752, Invalid=15338, Unknown=0, NotChecked=0, Total=18090 [2022-07-21 12:41:44,499 INFO L413 NwaCegarLoop]: 3097 mSDtfsCounter, 10327 mSDsluCounter, 15776 mSDsCounter, 0 mSdLazyCounter, 41766 mSolverCounterSat, 8031 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10692 SdHoareTripleChecker+Valid, 18873 SdHoareTripleChecker+Invalid, 49797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8031 IncrementalHoareTripleChecker+Valid, 41766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:41:44,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10692 Valid, 18873 Invalid, 49797 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8031 Valid, 41766 Invalid, 0 Unknown, 0 Unchecked, 26.6s Time] [2022-07-21 12:41:44,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137541 states. [2022-07-21 12:41:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137541 to 113955. [2022-07-21 12:41:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113955 states, 78483 states have (on average 1.319330300829479) internal successors, (103545), 81647 states have internal predecessors, (103545), 27969 states have call successors, (27969), 7318 states have call predecessors, (27969), 7502 states have return successors, (29603), 27119 states have call predecessors, (29603), 27968 states have call successors, (29603) [2022-07-21 12:41:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113955 states to 113955 states and 161117 transitions. [2022-07-21 12:41:49,396 INFO L78 Accepts]: Start accepts. Automaton has 113955 states and 161117 transitions. Word has length 138 [2022-07-21 12:41:49,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:41:49,396 INFO L495 AbstractCegarLoop]: Abstraction has 113955 states and 161117 transitions. [2022-07-21 12:41:49,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 15 states have internal predecessors, (134), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-21 12:41:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 113955 states and 161117 transitions. [2022-07-21 12:41:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 12:41:49,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:41:49,400 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:41:49,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 12:41:49,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 12:41:49,624 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:41:49,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:41:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash -99820461, now seen corresponding path program 1 times [2022-07-21 12:41:49,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:41:49,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597510953] [2022-07-21 12:41:49,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:41:49,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:41:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:41:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:41:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:41:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:41:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:41:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:41:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:41:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:41:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:41:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 12:41:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 12:41:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 12:41:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 12:41:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:41:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 12:41:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 12:41:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-21 12:41:49,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:41:49,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597510953] [2022-07-21 12:41:49,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597510953] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 12:41:49,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84296899] [2022-07-21 12:41:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:41:49,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 12:41:49,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:41:49,855 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) [2022-07-21 12:41:49,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 12:41:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:41:50,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 3167 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 12:41:50,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:41:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-21 12:41:50,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:41:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-21 12:41:51,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84296899] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:41:51,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 12:41:51,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-07-21 12:41:51,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573533335] [2022-07-21 12:41:51,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 12:41:51,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 12:41:51,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:41:51,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 12:41:51,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-07-21 12:41:51,027 INFO L87 Difference]: Start difference. First operand 113955 states and 161117 transitions. Second operand has 23 states, 23 states have (on average 5.913043478260869) internal successors, (136), 15 states have internal predecessors, (136), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-21 12:42:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:42:25,218 INFO L93 Difference]: Finished difference Result 297026 states and 419000 transitions. [2022-07-21 12:42:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-07-21 12:42:25,219 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.913043478260869) internal successors, (136), 15 states have internal predecessors, (136), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 139 [2022-07-21 12:42:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:42:26,144 INFO L225 Difference]: With dead ends: 297026 [2022-07-21 12:42:26,144 INFO L226 Difference]: Without dead ends: 182268 [2022-07-21 12:42:26,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 316 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6850 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2752, Invalid=15338, Unknown=0, NotChecked=0, Total=18090 [2022-07-21 12:42:26,680 INFO L413 NwaCegarLoop]: 3081 mSDtfsCounter, 10656 mSDsluCounter, 13137 mSDsCounter, 0 mSdLazyCounter, 37718 mSolverCounterSat, 7937 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11019 SdHoareTripleChecker+Valid, 16218 SdHoareTripleChecker+Invalid, 45655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7937 IncrementalHoareTripleChecker+Valid, 37718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:42:26,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11019 Valid, 16218 Invalid, 45655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7937 Valid, 37718 Invalid, 0 Unknown, 0 Unchecked, 24.5s Time] [2022-07-21 12:42:26,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182268 states. [2022-07-21 12:42:32,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182268 to 150073. [2022-07-21 12:42:32,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150073 states, 103319 states have (on average 1.3176085715115322) internal successors, (136134), 107339 states have internal predecessors, (136134), 36846 states have call successors, (36846), 9735 states have call predecessors, (36846), 9907 states have return successors, (38619), 35759 states have call predecessors, (38619), 36845 states have call successors, (38619) [2022-07-21 12:42:33,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150073 states to 150073 states and 211599 transitions. [2022-07-21 12:42:33,409 INFO L78 Accepts]: Start accepts. Automaton has 150073 states and 211599 transitions. Word has length 139 [2022-07-21 12:42:33,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:42:33,409 INFO L495 AbstractCegarLoop]: Abstraction has 150073 states and 211599 transitions. [2022-07-21 12:42:33,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.913043478260869) internal successors, (136), 15 states have internal predecessors, (136), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-21 12:42:33,410 INFO L276 IsEmpty]: Start isEmpty. Operand 150073 states and 211599 transitions. [2022-07-21 12:42:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-07-21 12:42:33,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:42:33,440 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:42:33,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 12:42:33,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 12:42:33,642 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:42:33,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:42:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash 933903265, now seen corresponding path program 1 times [2022-07-21 12:42:33,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:42:33,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379510879] [2022-07-21 12:42:33,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:42:33,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:42:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:42:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:42:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:42:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:42:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:42:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:42:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:42:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:42:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:42:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 12:42:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:42:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:42:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 12:42:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:42:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:42:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 12:42:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:42:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 12:42:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 12:42:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 12:42:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 12:42:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 12:42:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 12:42:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 12:42:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 12:42:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:42:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:42:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 12:42:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:42:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 12:42:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-21 12:42:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:42:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-21 12:42:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:33,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-21 12:42:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:42:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-21 12:42:34,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:42:34,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379510879] [2022-07-21 12:42:34,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379510879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:42:34,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:42:34,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 12:42:34,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5294296] [2022-07-21 12:42:34,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:42:34,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 12:42:34,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:42:34,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 12:42:34,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-21 12:42:34,005 INFO L87 Difference]: Start difference. First operand 150073 states and 211599 transitions. Second operand has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (31), 8 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)