./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.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 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:26:19,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:26:19,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:26:19,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:26:19,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:26:19,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:26:19,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:26:19,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:26:19,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:26:19,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:26:19,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:26:19,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:26:19,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:26:19,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:26:19,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:26:19,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:26:19,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:26:19,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:26:19,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:26:19,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:26:19,498 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:26:19,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:26:19,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:26:19,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:26:19,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:26:19,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:26:19,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:26:19,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:26:19,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:26:19,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:26:19,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:26:19,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:26:19,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:26:19,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:26:19,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:26:19,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:26:19,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:26:19,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:26:19,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:26:19,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:26:19,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:26:19,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:26:19,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:26:19,536 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:26:19,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:26:19,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:26:19,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:26:19,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:26:19,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:26:19,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:26:19,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:26:19,539 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:26:19,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:26:19,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:26:19,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:26:19,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:26:19,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:26:19,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:26:19,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:26:19,541 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:26:19,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:26:19,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:26:19,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:26:19,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:26:19,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:26:19,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:26:19,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:26:19,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:26:19,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:26:19,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:26:19,543 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:26:19,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:26:19,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:26:19,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 [2022-07-22 23:26:19,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:26:19,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:26:19,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:26:19,727 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:26:19,728 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:26:19,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-07-22 23:26:19,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1caeca583/c2aa9ef2443f4c3db593a774f55925e7/FLAGd1359bdb6 [2022-07-22 23:26:20,382 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:26:20,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-07-22 23:26:20,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1caeca583/c2aa9ef2443f4c3db593a774f55925e7/FLAGd1359bdb6 [2022-07-22 23:26:20,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1caeca583/c2aa9ef2443f4c3db593a774f55925e7 [2022-07-22 23:26:20,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:26:20,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:26:20,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:26:20,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:26:20,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:26:20,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:26:20" (1/1) ... [2022-07-22 23:26:20,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d4b6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:20, skipping insertion in model container [2022-07-22 23:26:20,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:26:20" (1/1) ... [2022-07-22 23:26:20,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:26:20,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:26:22,120 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2022-07-22 23:26:22,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:26:22,225 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:26:22,495 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2022-07-22 23:26:22,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:26:22,580 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:26:22,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:22 WrapperNode [2022-07-22 23:26:22,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:26:22,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:26:22,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:26:22,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:26:22,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:22" (1/1) ... [2022-07-22 23:26:22,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:22" (1/1) ... [2022-07-22 23:26:23,411 INFO L137 Inliner]: procedures = 341, calls = 1845, calls flagged for inlining = 158, calls inlined = 154, statements flattened = 4927 [2022-07-22 23:26:23,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:26:23,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:26:23,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:26:23,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:26:23,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:22" (1/1) ... [2022-07-22 23:26:23,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:22" (1/1) ... [2022-07-22 23:26:23,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:22" (1/1) ... [2022-07-22 23:26:23,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:22" (1/1) ... [2022-07-22 23:26:24,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:22" (1/1) ... [2022-07-22 23:26:24,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:22" (1/1) ... [2022-07-22 23:26:24,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:22" (1/1) ... [2022-07-22 23:26:24,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:26:24,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:26:24,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:26:24,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:26:24,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:22" (1/1) ... [2022-07-22 23:26:24,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:26:24,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:26:24,720 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) [2022-07-22 23:26:24,735 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 [2022-07-22 23:26:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure queue_iso [2022-07-22 23:26:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_iso [2022-07-22 23:26:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-07-22 23:26:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-07-22 23:26:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_channel [2022-07-22 23:26:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_channel [2022-07-22 23:26:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_register [2022-07-22 23:26:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_register [2022-07-22 23:26:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_establish_pp_connection [2022-07-22 23:26:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_establish_pp_connection [2022-07-22 23:26:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-22 23:26:24,755 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-22 23:26:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-07-22 23:26:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure node_req [2022-07-22 23:26:24,755 INFO L138 BoogieDeclarations]: Found implementation of procedure node_req [2022-07-22 23:26:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:26:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:26:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_lock [2022-07-22 23:26:24,756 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_lock [2022-07-22 23:26:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-07-22 23:26:24,756 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-07-22 23:26:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-07-22 23:26:24,756 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-07-22 23:26:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:26:24,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:26:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_read [2022-07-22 23:26:24,757 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_read [2022-07-22 23:26:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2022-07-22 23:26:24,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2022-07-22 23:26:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:26:24,757 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:26:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:26:24,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:26:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure pad_operands [2022-07-22 23:26:24,758 INFO L138 BoogieDeclarations]: Found implementation of procedure pad_operands [2022-07-22 23:26:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_set_pids [2022-07-22 23:26:24,758 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_set_pids [2022-07-22 23:26:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_ca_io_poll [2022-07-22 23:26:24,758 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_ca_io_poll [2022-07-22 23:26:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-07-22 23:26:24,759 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-07-22 23:26:24,759 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_release [2022-07-22 23:26:24,759 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_release [2022-07-22 23:26:24,759 INFO L130 BoogieDeclarations]: Found specification of procedure clear_operands [2022-07-22 23:26:24,759 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_operands [2022-07-22 23:26:24,759 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 23:26:24,759 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 23:26:24,759 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_open [2022-07-22 23:26:24,760 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_open [2022-07-22 23:26:24,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:26:24,760 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-07-22 23:26:24,760 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-07-22 23:26:24,760 INFO L130 BoogieDeclarations]: Found specification of procedure avc_write [2022-07-22 23:26:24,760 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_write [2022-07-22 23:26:24,760 INFO L130 BoogieDeclarations]: Found specification of procedure get_opcr [2022-07-22 23:26:24,760 INFO L138 BoogieDeclarations]: Found implementation of procedure get_opcr [2022-07-22 23:26:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:26:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-07-22 23:26:24,761 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-07-22 23:26:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure collect_channels [2022-07-22 23:26:24,761 INFO L138 BoogieDeclarations]: Found implementation of procedure collect_channels [2022-07-22 23:26:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:26:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:26:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_context_destroy [2022-07-22 23:26:24,762 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_context_destroy [2022-07-22 23:26:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_unregister_rc [2022-07-22 23:26:24,762 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_unregister_rc [2022-07-22 23:26:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_status [2022-07-22 23:26:24,762 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_status [2022-07-22 23:26:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-22 23:26:24,762 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-22 23:26:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-22 23:26:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-22 23:26:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-22 23:26:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-22 23:26:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:26:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:26:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-07-22 23:26:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-07-22 23:26:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2022-07-22 23:26:24,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2022-07-22 23:26:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:26:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-22 23:26:24,764 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-22 23:26:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure node_remove [2022-07-22 23:26:24,764 INFO L138 BoogieDeclarations]: Found implementation of procedure node_remove [2022-07-22 23:26:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:26:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_unregister [2022-07-22 23:26:24,765 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_unregister [2022-07-22 23:26:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure add_pid_filter [2022-07-22 23:26:24,765 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pid_filter [2022-07-22 23:26:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:26:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure is_register_rc [2022-07-22 23:26:24,765 INFO L138 BoogieDeclarations]: Found implementation of procedure is_register_rc [2022-07-22 23:26:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure dealloc_channel [2022-07-22 23:26:24,765 INFO L138 BoogieDeclarations]: Found implementation of procedure dealloc_channel [2022-07-22 23:26:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 23:26:24,766 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 23:26:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:26:24,766 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:26:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-07-22 23:26:24,766 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-07-22 23:26:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:26:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2022-07-22 23:26:24,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2022-07-22 23:26:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure debug_fcp [2022-07-22 23:26:24,767 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_fcp [2022-07-22 23:26:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-07-22 23:26:24,767 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-07-22 23:26:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-22 23:26:24,767 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-22 23:26:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:26:24,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:26:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_net_release [2022-07-22 23:26:24,768 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_net_release [2022-07-22 23:26:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:26:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:26:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:26:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 23:26:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure set_opcr [2022-07-22 23:26:24,769 INFO L138 BoogieDeclarations]: Found implementation of procedure set_opcr [2022-07-22 23:26:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-22 23:26:24,769 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-22 23:26:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-22 23:26:24,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-22 23:26:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_buffer_destroy [2022-07-22 23:26:24,769 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_buffer_destroy [2022-07-22 23:26:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure node_probe [2022-07-22 23:26:24,770 INFO L138 BoogieDeclarations]: Found implementation of procedure node_probe [2022-07-22 23:26:24,770 INFO L130 BoogieDeclarations]: Found specification of procedure get_ca_object_pos [2022-07-22 23:26:24,770 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ca_object_pos [2022-07-22 23:26:24,770 INFO L130 BoogieDeclarations]: Found specification of procedure node_update [2022-07-22 23:26:24,770 INFO L138 BoogieDeclarations]: Found implementation of procedure node_update [2022-07-22 23:26:24,770 INFO L130 BoogieDeclarations]: Found specification of procedure avc_register_remote_control [2022-07-22 23:26:24,770 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_register_remote_control [2022-07-22 23:26:24,770 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-07-22 23:26:24,770 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-07-22 23:26:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 23:26:24,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 23:26:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure device_of [2022-07-22 23:26:24,771 INFO L138 BoogieDeclarations]: Found implementation of procedure device_of [2022-07-22 23:26:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2022-07-22 23:26:24,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2022-07-22 23:26:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure fw_core_remove_address_handler [2022-07-22 23:26:24,771 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_core_remove_address_handler [2022-07-22 23:26:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:26:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:26:24,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:26:25,327 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:26:25,329 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:26:45,656 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:26:45,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:26:45,673 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 23:26:45,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:26:45 BoogieIcfgContainer [2022-07-22 23:26:45,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:26:45,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:26:45,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:26:45,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:26:45,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:26:20" (1/3) ... [2022-07-22 23:26:45,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ae8d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:26:45, skipping insertion in model container [2022-07-22 23:26:45,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:26:22" (2/3) ... [2022-07-22 23:26:45,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ae8d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:26:45, skipping insertion in model container [2022-07-22 23:26:45,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:26:45" (3/3) ... [2022-07-22 23:26:45,681 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-07-22 23:26:45,690 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:26:45,690 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:26:45,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:26:45,736 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@303e1d4c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4122badd [2022-07-22 23:26:45,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:26:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 1351 states, 1041 states have (on average 1.3996157540826129) internal successors, (1457), 1064 states have internal predecessors, (1457), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2022-07-22 23:26:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-22 23:26:45,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:26:45,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:26:45,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:26:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:26:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash 959882994, now seen corresponding path program 1 times [2022-07-22 23:26:45,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:26:45,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557427202] [2022-07-22 23:26:45,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:26:45,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:26:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:26:46,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:26:46,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557427202] [2022-07-22 23:26:46,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557427202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:26:46,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:26:46,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:26:46,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318541325] [2022-07-22 23:26:46,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:26:46,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:26:46,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:26:46,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:26:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:26:46,130 INFO L87 Difference]: Start difference. First operand has 1351 states, 1041 states have (on average 1.3996157540826129) internal successors, (1457), 1064 states have internal predecessors, (1457), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:26:46,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:26:46,320 INFO L93 Difference]: Finished difference Result 3865 states and 5697 transitions. [2022-07-22 23:26:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:26:46,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-22 23:26:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:26:46,340 INFO L225 Difference]: With dead ends: 3865 [2022-07-22 23:26:46,340 INFO L226 Difference]: Without dead ends: 2507 [2022-07-22 23:26:46,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:26:46,360 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 1636 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 4122 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:26:46,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1636 Valid, 4122 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:26:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-07-22 23:26:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2489. [2022-07-22 23:26:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 1930 states have (on average 1.3854922279792745) internal successors, (2674), 1965 states have internal predecessors, (2674), 430 states have call successors, (430), 129 states have call predecessors, (430), 128 states have return successors, (421), 420 states have call predecessors, (421), 421 states have call successors, (421) [2022-07-22 23:26:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 3525 transitions. [2022-07-22 23:26:46,519 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 3525 transitions. Word has length 17 [2022-07-22 23:26:46,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:26:46,520 INFO L495 AbstractCegarLoop]: Abstraction has 2489 states and 3525 transitions. [2022-07-22 23:26:46,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:26:46,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 3525 transitions. [2022-07-22 23:26:46,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 23:26:46,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:26:46,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:26:46,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:26:46,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:26:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:26:46,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1129769963, now seen corresponding path program 1 times [2022-07-22 23:26:46,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:26:46,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370923244] [2022-07-22 23:26:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:26:46,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:26:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:26:46,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:26:46,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370923244] [2022-07-22 23:26:46,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370923244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:26:46,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:26:46,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:26:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861075327] [2022-07-22 23:26:46,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:26:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:26:46,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:26:46,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:26:46,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:26:46,659 INFO L87 Difference]: Start difference. First operand 2489 states and 3525 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:26:46,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:26:46,756 INFO L93 Difference]: Finished difference Result 2658 states and 3749 transitions. [2022-07-22 23:26:46,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:26:46,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-22 23:26:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:26:46,767 INFO L225 Difference]: With dead ends: 2658 [2022-07-22 23:26:46,767 INFO L226 Difference]: Without dead ends: 2654 [2022-07-22 23:26:46,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:26:46,771 INFO L413 NwaCegarLoop]: 1915 mSDtfsCounter, 1290 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:26:46,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 2627 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:26:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2022-07-22 23:26:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2652. [2022-07-22 23:26:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2078 states have (on average 1.388354186717998) internal successors, (2885), 2113 states have internal predecessors, (2885), 432 states have call successors, (432), 142 states have call predecessors, (432), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2022-07-22 23:26:46,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3742 transitions. [2022-07-22 23:26:46,853 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3742 transitions. Word has length 19 [2022-07-22 23:26:46,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:26:46,854 INFO L495 AbstractCegarLoop]: Abstraction has 2652 states and 3742 transitions. [2022-07-22 23:26:46,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:26:46,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3742 transitions. [2022-07-22 23:26:46,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-22 23:26:46,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:26:46,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:26:46,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:26:46,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:26:46,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:26:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash 662648824, now seen corresponding path program 1 times [2022-07-22 23:26:46,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:26:46,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91957774] [2022-07-22 23:26:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:26:46,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:26:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:26:46,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:26:46,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91957774] [2022-07-22 23:26:46,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91957774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:26:46,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:26:46,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:26:46,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092573837] [2022-07-22 23:26:46,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:26:46,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:26:46,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:26:46,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:26:46,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:26:46,958 INFO L87 Difference]: Start difference. First operand 2652 states and 3742 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:26:47,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:26:47,014 INFO L93 Difference]: Finished difference Result 2654 states and 3743 transitions. [2022-07-22 23:26:47,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:26:47,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-22 23:26:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:26:47,024 INFO L225 Difference]: With dead ends: 2654 [2022-07-22 23:26:47,024 INFO L226 Difference]: Without dead ends: 2651 [2022-07-22 23:26:47,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:26:47,030 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 1888 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:26:47,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 1904 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:26:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2022-07-22 23:26:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2651. [2022-07-22 23:26:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2078 states have (on average 1.3878729547641964) internal successors, (2884), 2112 states have internal predecessors, (2884), 431 states have call successors, (431), 142 states have call predecessors, (431), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2022-07-22 23:26:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3740 transitions. [2022-07-22 23:26:47,094 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3740 transitions. Word has length 20 [2022-07-22 23:26:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:26:47,095 INFO L495 AbstractCegarLoop]: Abstraction has 2651 states and 3740 transitions. [2022-07-22 23:26:47,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:26:47,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3740 transitions. [2022-07-22 23:26:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-22 23:26:47,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:26:47,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:26:47,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:26:47,097 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:26:47,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:26:47,097 INFO L85 PathProgramCache]: Analyzing trace with hash -933199730, now seen corresponding path program 1 times [2022-07-22 23:26:47,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:26:47,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949700953] [2022-07-22 23:26:47,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:26:47,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:26:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:26:47,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:26:47,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949700953] [2022-07-22 23:26:47,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949700953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:26:47,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:26:47,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:26:47,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462400587] [2022-07-22 23:26:47,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:26:47,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:26:47,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:26:47,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:26:47,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:26:47,226 INFO L87 Difference]: Start difference. First operand 2651 states and 3740 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:26:47,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:26:47,436 INFO L93 Difference]: Finished difference Result 7923 states and 11257 transitions. [2022-07-22 23:26:47,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:26:47,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-22 23:26:47,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:26:47,456 INFO L225 Difference]: With dead ends: 7923 [2022-07-22 23:26:47,457 INFO L226 Difference]: Without dead ends: 5275 [2022-07-22 23:26:47,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:26:47,466 INFO L413 NwaCegarLoop]: 2171 mSDtfsCounter, 1890 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 4059 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:26:47,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 4059 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:26:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5275 states. [2022-07-22 23:26:47,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5275 to 5263. [2022-07-22 23:26:47,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 4132 states have (on average 1.388189738625363) internal successors, (5736), 4199 states have internal predecessors, (5736), 850 states have call successors, (850), 282 states have call predecessors, (850), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2022-07-22 23:26:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 7468 transitions. [2022-07-22 23:26:47,589 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 7468 transitions. Word has length 21 [2022-07-22 23:26:47,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:26:47,589 INFO L495 AbstractCegarLoop]: Abstraction has 5263 states and 7468 transitions. [2022-07-22 23:26:47,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:26:47,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 7468 transitions. [2022-07-22 23:26:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-22 23:26:47,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:26:47,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:26:47,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:26:47,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:26:47,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:26:47,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1135107515, now seen corresponding path program 1 times [2022-07-22 23:26:47,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:26:47,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000589561] [2022-07-22 23:26:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:26:47,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:26:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:26:47,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:26:47,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000589561] [2022-07-22 23:26:47,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000589561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:26:47,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:26:47,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:26:47,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183010336] [2022-07-22 23:26:47,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:26:47,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:26:47,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:26:47,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:26:47,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:26:47,685 INFO L87 Difference]: Start difference. First operand 5263 states and 7468 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:26:47,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:26:47,762 INFO L93 Difference]: Finished difference Result 5265 states and 7469 transitions. [2022-07-22 23:26:47,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:26:47,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-22 23:26:47,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:26:47,781 INFO L225 Difference]: With dead ends: 5265 [2022-07-22 23:26:47,781 INFO L226 Difference]: Without dead ends: 5262 [2022-07-22 23:26:47,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:26:47,785 INFO L413 NwaCegarLoop]: 1902 mSDtfsCounter, 1884 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:26:47,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1884 Valid, 1902 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:26:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5262 states. [2022-07-22 23:26:47,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5262 to 5262. [2022-07-22 23:26:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5262 states, 4132 states have (on average 1.387947725072604) internal successors, (5735), 4198 states have internal predecessors, (5735), 849 states have call successors, (849), 282 states have call predecessors, (849), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2022-07-22 23:26:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 7466 transitions. [2022-07-22 23:26:47,916 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 7466 transitions. Word has length 22 [2022-07-22 23:26:47,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:26:47,916 INFO L495 AbstractCegarLoop]: Abstraction has 5262 states and 7466 transitions. [2022-07-22 23:26:47,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:26:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 7466 transitions. [2022-07-22 23:26:47,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-22 23:26:47,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:26:47,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:26:47,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:26:47,918 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:26:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:26:47,919 INFO L85 PathProgramCache]: Analyzing trace with hash 828127537, now seen corresponding path program 1 times [2022-07-22 23:26:47,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:26:47,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254047403] [2022-07-22 23:26:47,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:26:47,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:26:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:26:48,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:26:48,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254047403] [2022-07-22 23:26:48,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254047403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:26:48,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:26:48,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:26:48,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804758579] [2022-07-22 23:26:48,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:26:48,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:26:48,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:26:48,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:26:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:26:48,019 INFO L87 Difference]: Start difference. First operand 5262 states and 7466 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:26:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:26:48,100 INFO L93 Difference]: Finished difference Result 5264 states and 7467 transitions. [2022-07-22 23:26:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:26:48,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-07-22 23:26:48,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:26:48,121 INFO L225 Difference]: With dead ends: 5264 [2022-07-22 23:26:48,121 INFO L226 Difference]: Without dead ends: 5250 [2022-07-22 23:26:48,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:26:48,128 INFO L413 NwaCegarLoop]: 1901 mSDtfsCounter, 1881 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:26:48,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 1901 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:26:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2022-07-22 23:26:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 5250. [2022-07-22 23:26:48,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 4123 states have (on average 1.3875818578704826) internal successors, (5721), 4187 states have internal predecessors, (5721), 846 states have call successors, (846), 282 states have call predecessors, (846), 280 states have return successors, (880), 836 states have call predecessors, (880), 840 states have call successors, (880) [2022-07-22 23:26:48,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 7447 transitions. [2022-07-22 23:26:48,252 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 7447 transitions. Word has length 23 [2022-07-22 23:26:48,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:26:48,252 INFO L495 AbstractCegarLoop]: Abstraction has 5250 states and 7447 transitions. [2022-07-22 23:26:48,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:26:48,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 7447 transitions. [2022-07-22 23:26:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-22 23:26:48,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:26:48,257 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:26:48,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:26:48,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:26:48,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:26:48,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1010052590, now seen corresponding path program 1 times [2022-07-22 23:26:48,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:26:48,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607071422] [2022-07-22 23:26:48,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:26:48,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:26:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:48,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:26:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:48,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 23:26:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:48,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 23:26:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:26:48,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:26:48,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607071422] [2022-07-22 23:26:48,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607071422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:26:48,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:26:48,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:26:48,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683591190] [2022-07-22 23:26:48,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:26:48,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:26:48,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:26:48,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:26:48,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:26:48,428 INFO L87 Difference]: Start difference. First operand 5250 states and 7447 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:26:51,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:26:54,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:26:56,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:26:58,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:27:01,747 INFO L93 Difference]: Finished difference Result 11328 states and 16256 transitions. [2022-07-22 23:27:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:27:01,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2022-07-22 23:27:01,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:27:01,790 INFO L225 Difference]: With dead ends: 11328 [2022-07-22 23:27:01,791 INFO L226 Difference]: Without dead ends: 6081 [2022-07-22 23:27:01,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:27:01,814 INFO L413 NwaCegarLoop]: 1733 mSDtfsCounter, 2758 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 974 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2906 SdHoareTripleChecker+Valid, 4512 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:27:01,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2906 Valid, 4512 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 1753 Invalid, 2 Unknown, 0 Unchecked, 13.0s Time] [2022-07-22 23:27:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2022-07-22 23:27:01,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 5260. [2022-07-22 23:27:01,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 4131 states have (on average 1.3863471314451707) internal successors, (5727), 4199 states have internal predecessors, (5727), 840 states have call successors, (840), 282 states have call predecessors, (840), 288 states have return successors, (886), 830 states have call predecessors, (886), 834 states have call successors, (886) [2022-07-22 23:27:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 7453 transitions. [2022-07-22 23:27:02,000 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 7453 transitions. Word has length 48 [2022-07-22 23:27:02,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:27:02,002 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 7453 transitions. [2022-07-22 23:27:02,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:27:02,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 7453 transitions. [2022-07-22 23:27:02,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-22 23:27:02,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:27:02,007 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:27:02,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:27:02,008 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:27:02,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:27:02,008 INFO L85 PathProgramCache]: Analyzing trace with hash -954410433, now seen corresponding path program 1 times [2022-07-22 23:27:02,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:27:02,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746475598] [2022-07-22 23:27:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:27:02,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:27:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:02,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:27:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:02,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:27:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:27:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:02,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 23:27:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:27:02,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:27:02,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746475598] [2022-07-22 23:27:02,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746475598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:27:02,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:27:02,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:27:02,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229770678] [2022-07-22 23:27:02,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:27:02,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:27:02,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:27:02,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:27:02,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:27:02,248 INFO L87 Difference]: Start difference. First operand 5260 states and 7453 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 23:27:05,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:08,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:10,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:12,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:17,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:27:17,693 INFO L93 Difference]: Finished difference Result 11876 states and 17228 transitions. [2022-07-22 23:27:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:27:17,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2022-07-22 23:27:17,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:27:17,723 INFO L225 Difference]: With dead ends: 11876 [2022-07-22 23:27:17,723 INFO L226 Difference]: Without dead ends: 6619 [2022-07-22 23:27:17,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:27:17,743 INFO L413 NwaCegarLoop]: 1670 mSDtfsCounter, 3369 mSDsluCounter, 3929 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 1424 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3474 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 3953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1424 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:27:17,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3474 Valid, 5599 Invalid, 3953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1424 Valid, 2526 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2022-07-22 23:27:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6619 states. [2022-07-22 23:27:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6619 to 4942. [2022-07-22 23:27:17,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 3897 states have (on average 1.3869643315370799) internal successors, (5405), 3965 states have internal predecessors, (5405), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2022-07-22 23:27:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 6967 transitions. [2022-07-22 23:27:17,939 INFO L78 Accepts]: Start accepts. Automaton has 4942 states and 6967 transitions. Word has length 61 [2022-07-22 23:27:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:27:17,939 INFO L495 AbstractCegarLoop]: Abstraction has 4942 states and 6967 transitions. [2022-07-22 23:27:17,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 23:27:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4942 states and 6967 transitions. [2022-07-22 23:27:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 23:27:17,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:27:17,945 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:27:17,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:27:17,945 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:27:17,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:27:17,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1650073521, now seen corresponding path program 1 times [2022-07-22 23:27:17,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:27:17,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298274198] [2022-07-22 23:27:17,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:27:17,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:27:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:18,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 23:27:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:27:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:18,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:27:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:18,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:27:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:27:18,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:27:18,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298274198] [2022-07-22 23:27:18,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298274198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:27:18,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:27:18,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:27:18,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515488750] [2022-07-22 23:27:18,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:27:18,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:27:18,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:27:18,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:27:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:27:18,171 INFO L87 Difference]: Start difference. First operand 4942 states and 6967 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 23:27:21,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:23,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:26,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:29,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:32,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:34,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:37,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:27:37,950 INFO L93 Difference]: Finished difference Result 11128 states and 16176 transitions. [2022-07-22 23:27:37,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:27:37,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2022-07-22 23:27:37,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:27:37,971 INFO L225 Difference]: With dead ends: 11128 [2022-07-22 23:27:37,972 INFO L226 Difference]: Without dead ends: 6189 [2022-07-22 23:27:37,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:27:37,991 INFO L413 NwaCegarLoop]: 1476 mSDtfsCounter, 1378 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 684 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 4380 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:27:37,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 4380 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 2205 Invalid, 5 Unknown, 0 Unchecked, 19.5s Time] [2022-07-22 23:27:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6189 states. [2022-07-22 23:27:38,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6189 to 4946. [2022-07-22 23:27:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4946 states, 3901 states have (on average 1.3865675467828762) internal successors, (5409), 3969 states have internal predecessors, (5409), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2022-07-22 23:27:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4946 states to 4946 states and 6971 transitions. [2022-07-22 23:27:38,149 INFO L78 Accepts]: Start accepts. Automaton has 4946 states and 6971 transitions. Word has length 65 [2022-07-22 23:27:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:27:38,151 INFO L495 AbstractCegarLoop]: Abstraction has 4946 states and 6971 transitions. [2022-07-22 23:27:38,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 23:27:38,151 INFO L276 IsEmpty]: Start isEmpty. Operand 4946 states and 6971 transitions. [2022-07-22 23:27:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 23:27:38,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:27:38,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:27:38,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 23:27:38,156 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:27:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:27:38,157 INFO L85 PathProgramCache]: Analyzing trace with hash 767739636, now seen corresponding path program 1 times [2022-07-22 23:27:38,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:27:38,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304365709] [2022-07-22 23:27:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:27:38,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:27:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:27:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:38,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:27:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:38,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:27:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:38,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:27:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:38,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:27:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:38,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:27:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:27:38,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:27:38,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304365709] [2022-07-22 23:27:38,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304365709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:27:38,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:27:38,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:27:38,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137320361] [2022-07-22 23:27:38,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:27:38,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:27:38,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:27:38,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:27:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:27:38,303 INFO L87 Difference]: Start difference. First operand 4946 states and 6971 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 23:27:41,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:43,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:45,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:48,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:27:48,162 INFO L93 Difference]: Finished difference Result 11568 states and 16389 transitions. [2022-07-22 23:27:48,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:27:48,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2022-07-22 23:27:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:27:48,178 INFO L225 Difference]: With dead ends: 11568 [2022-07-22 23:27:48,179 INFO L226 Difference]: Without dead ends: 6625 [2022-07-22 23:27:48,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:27:48,189 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 2381 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 695 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:27:48,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2516 Valid, 3401 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 1536 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2022-07-22 23:27:48,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6625 states. [2022-07-22 23:27:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6625 to 6282. [2022-07-22 23:27:48,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6282 states, 5009 states have (on average 1.3976841684967058) internal successors, (7001), 5093 states have internal predecessors, (7001), 902 states have call successors, (902), 356 states have call predecessors, (902), 370 states have return successors, (970), 904 states have call predecessors, (970), 896 states have call successors, (970) [2022-07-22 23:27:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6282 states to 6282 states and 8873 transitions. [2022-07-22 23:27:48,369 INFO L78 Accepts]: Start accepts. Automaton has 6282 states and 8873 transitions. Word has length 76 [2022-07-22 23:27:48,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:27:48,369 INFO L495 AbstractCegarLoop]: Abstraction has 6282 states and 8873 transitions. [2022-07-22 23:27:48,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 23:27:48,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6282 states and 8873 transitions. [2022-07-22 23:27:48,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 23:27:48,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:27:48,375 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:27:48,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 23:27:48,376 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:27:48,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:27:48,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1364965650, now seen corresponding path program 1 times [2022-07-22 23:27:48,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:27:48,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442998034] [2022-07-22 23:27:48,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:27:48,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:27:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:27:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:48,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:27:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 23:27:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:48,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 23:27:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:48,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 23:27:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:48,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 23:27:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:27:48,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:27:48,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442998034] [2022-07-22 23:27:48,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442998034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:27:48,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:27:48,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:27:48,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3902036] [2022-07-22 23:27:48,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:27:48,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:27:48,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:27:48,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:27:48,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:27:48,544 INFO L87 Difference]: Start difference. First operand 6282 states and 8873 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 23:27:51,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:53,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:55,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:27:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:27:57,379 INFO L93 Difference]: Finished difference Result 18194 states and 25813 transitions. [2022-07-22 23:27:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:27:57,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 89 [2022-07-22 23:27:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:27:57,420 INFO L225 Difference]: With dead ends: 18194 [2022-07-22 23:27:57,420 INFO L226 Difference]: Without dead ends: 11915 [2022-07-22 23:27:57,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:27:57,440 INFO L413 NwaCegarLoop]: 2548 mSDtfsCounter, 3642 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 1419 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 4778 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1419 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:27:57,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3823 Valid, 4778 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1419 Valid, 1949 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2022-07-22 23:27:57,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11915 states. [2022-07-22 23:27:57,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11915 to 11280. [2022-07-22 23:27:57,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11280 states, 8931 states have (on average 1.3898779531967305) internal successors, (12413), 9079 states have internal predecessors, (12413), 1684 states have call successors, (1684), 634 states have call predecessors, (1684), 664 states have return successors, (1812), 1692 states have call predecessors, (1812), 1678 states have call successors, (1812) [2022-07-22 23:27:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11280 states to 11280 states and 15909 transitions. [2022-07-22 23:27:57,794 INFO L78 Accepts]: Start accepts. Automaton has 11280 states and 15909 transitions. Word has length 89 [2022-07-22 23:27:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:27:57,794 INFO L495 AbstractCegarLoop]: Abstraction has 11280 states and 15909 transitions. [2022-07-22 23:27:57,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 23:27:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 11280 states and 15909 transitions. [2022-07-22 23:27:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-22 23:27:57,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:27:57,798 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:27:57,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 23:27:57,799 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:27:57,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:27:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1931295713, now seen corresponding path program 1 times [2022-07-22 23:27:57,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:27:57,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808847489] [2022-07-22 23:27:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:27:57,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:27:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 23:27:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:57,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:27:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:57,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:27:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:57,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:27:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:57,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:27:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:27:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:27:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:27:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:27:58,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:27:58,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808847489] [2022-07-22 23:27:58,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808847489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:27:58,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:27:58,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:27:58,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158063931] [2022-07-22 23:27:58,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:27:58,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:27:58,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:27:58,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:27:58,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:27:58,007 INFO L87 Difference]: Start difference. First operand 11280 states and 15909 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:28:01,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:04,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:07,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:09,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:28:09,620 INFO L93 Difference]: Finished difference Result 14099 states and 20419 transitions. [2022-07-22 23:28:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:28:09,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2022-07-22 23:28:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:28:09,677 INFO L225 Difference]: With dead ends: 14099 [2022-07-22 23:28:09,677 INFO L226 Difference]: Without dead ends: 14096 [2022-07-22 23:28:09,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:28:09,689 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 2212 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 988 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 3465 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:28:09,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 3465 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 1792 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2022-07-22 23:28:09,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14096 states. [2022-07-22 23:28:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14096 to 11279. [2022-07-22 23:28:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11279 states, 8931 states have (on average 1.3887582577538908) internal successors, (12403), 9078 states have internal predecessors, (12403), 1683 states have call successors, (1683), 634 states have call predecessors, (1683), 664 states have return successors, (1812), 1692 states have call predecessors, (1812), 1678 states have call successors, (1812) [2022-07-22 23:28:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11279 states to 11279 states and 15898 transitions. [2022-07-22 23:28:10,085 INFO L78 Accepts]: Start accepts. Automaton has 11279 states and 15898 transitions. Word has length 87 [2022-07-22 23:28:10,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:28:10,086 INFO L495 AbstractCegarLoop]: Abstraction has 11279 states and 15898 transitions. [2022-07-22 23:28:10,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:28:10,087 INFO L276 IsEmpty]: Start isEmpty. Operand 11279 states and 15898 transitions. [2022-07-22 23:28:10,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 23:28:10,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:28:10,094 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:28:10,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 23:28:10,095 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:28:10,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:28:10,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1592341211, now seen corresponding path program 1 times [2022-07-22 23:28:10,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:28:10,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669589632] [2022-07-22 23:28:10,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:28:10,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:28:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:10,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:28:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:10,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:28:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:10,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:28:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:10,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:28:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:10,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 23:28:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:10,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:28:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 23:28:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:10,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 23:28:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:10,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 23:28:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:10,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 23:28:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 23:28:10,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:28:10,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669589632] [2022-07-22 23:28:10,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669589632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:28:10,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:28:10,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:28:10,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449693796] [2022-07-22 23:28:10,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:28:10,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:28:10,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:28:10,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:28:10,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:28:10,336 INFO L87 Difference]: Start difference. First operand 11279 states and 15898 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 23:28:14,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:16,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:18,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:20,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:26,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:28,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:29,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:31,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:33,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:35,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:36,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:41,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:28:41,198 INFO L93 Difference]: Finished difference Result 24707 states and 35319 transitions. [2022-07-22 23:28:41,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:28:41,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 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 120 [2022-07-22 23:28:41,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:28:41,243 INFO L225 Difference]: With dead ends: 24707 [2022-07-22 23:28:41,243 INFO L226 Difference]: Without dead ends: 13431 [2022-07-22 23:28:41,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:28:41,268 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 1863 mSDsluCounter, 3765 mSDsCounter, 0 mSdLazyCounter, 4092 mSolverCounterSat, 638 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 5260 SdHoareTripleChecker+Invalid, 4739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 4092 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:28:41,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2008 Valid, 5260 Invalid, 4739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 4092 Invalid, 9 Unknown, 0 Unchecked, 30.3s Time] [2022-07-22 23:28:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13431 states. [2022-07-22 23:28:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13431 to 11375. [2022-07-22 23:28:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11375 states, 9011 states have (on average 1.3879702585728555) internal successors, (12507), 9158 states have internal predecessors, (12507), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1836), 1708 states have call predecessors, (1836), 1694 states have call successors, (1836) [2022-07-22 23:28:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11375 states to 11375 states and 16042 transitions. [2022-07-22 23:28:41,612 INFO L78 Accepts]: Start accepts. Automaton has 11375 states and 16042 transitions. Word has length 120 [2022-07-22 23:28:41,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:28:41,613 INFO L495 AbstractCegarLoop]: Abstraction has 11375 states and 16042 transitions. [2022-07-22 23:28:41,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 23:28:41,613 INFO L276 IsEmpty]: Start isEmpty. Operand 11375 states and 16042 transitions. [2022-07-22 23:28:41,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 23:28:41,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:28:41,620 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:28:41,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 23:28:41,620 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:28:41,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:28:41,621 INFO L85 PathProgramCache]: Analyzing trace with hash -651642087, now seen corresponding path program 1 times [2022-07-22 23:28:41,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:28:41,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143780062] [2022-07-22 23:28:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:28:41,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:28:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:41,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:28:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:28:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:41,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:28:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:28:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:41,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 23:28:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:41,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:28:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:41,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 23:28:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:41,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 23:28:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:41,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 23:28:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:41,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 23:28:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 23:28:41,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:28:41,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143780062] [2022-07-22 23:28:41,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143780062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:28:41,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:28:41,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:28:41,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671933221] [2022-07-22 23:28:41,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:28:41,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:28:41,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:28:41,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:28:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:28:41,848 INFO L87 Difference]: Start difference. First operand 11375 states and 16042 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 23:28:44,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:47,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:52,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:54,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:28:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:28:56,161 INFO L93 Difference]: Finished difference Result 24633 states and 35161 transitions. [2022-07-22 23:28:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:28:56,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 120 [2022-07-22 23:28:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:28:56,213 INFO L225 Difference]: With dead ends: 24633 [2022-07-22 23:28:56,213 INFO L226 Difference]: Without dead ends: 13261 [2022-07-22 23:28:56,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:28:56,245 INFO L413 NwaCegarLoop]: 1460 mSDtfsCounter, 2220 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 877 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 3360 SdHoareTripleChecker+Invalid, 2596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:28:56,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 3360 Invalid, 2596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 1716 Invalid, 3 Unknown, 0 Unchecked, 13.9s Time] [2022-07-22 23:28:56,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13261 states. [2022-07-22 23:28:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13261 to 11383. [2022-07-22 23:28:56,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11383 states, 9019 states have (on average 1.3876261226300033) internal successors, (12515), 9166 states have internal predecessors, (12515), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1836), 1708 states have call predecessors, (1836), 1694 states have call successors, (1836) [2022-07-22 23:28:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11383 states to 11383 states and 16050 transitions. [2022-07-22 23:28:56,746 INFO L78 Accepts]: Start accepts. Automaton has 11383 states and 16050 transitions. Word has length 120 [2022-07-22 23:28:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:28:56,747 INFO L495 AbstractCegarLoop]: Abstraction has 11383 states and 16050 transitions. [2022-07-22 23:28:56,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 23:28:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 11383 states and 16050 transitions. [2022-07-22 23:28:56,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 23:28:56,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:28:56,756 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:28:56,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 23:28:56,757 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:28:56,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:28:56,757 INFO L85 PathProgramCache]: Analyzing trace with hash 968809516, now seen corresponding path program 1 times [2022-07-22 23:28:56,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:28:56,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933142339] [2022-07-22 23:28:56,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:28:56,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:28:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:56,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:28:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:56,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:28:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:56,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:28:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:56,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:28:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:56,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 23:28:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:56,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:28:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:56,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 23:28:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:56,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 23:28:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:56,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 23:28:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:28:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 23:28:56,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:28:56,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933142339] [2022-07-22 23:28:56,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933142339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:28:56,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:28:56,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:28:56,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482449136] [2022-07-22 23:28:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:28:56,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:28:56,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:28:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:28:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:28:56,950 INFO L87 Difference]: Start difference. First operand 11383 states and 16050 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-22 23:29:00,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:02,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:04,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:08,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:10,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:29:14,457 INFO L93 Difference]: Finished difference Result 24909 states and 35617 transitions. [2022-07-22 23:29:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:29:14,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 122 [2022-07-22 23:29:14,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:29:14,504 INFO L225 Difference]: With dead ends: 24909 [2022-07-22 23:29:14,504 INFO L226 Difference]: Without dead ends: 13529 [2022-07-22 23:29:14,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:29:14,535 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1644 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 427 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:29:14,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 3887 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 2315 Invalid, 4 Unknown, 0 Unchecked, 17.0s Time] [2022-07-22 23:29:14,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13529 states. [2022-07-22 23:29:15,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13529 to 11436. [2022-07-22 23:29:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11436 states, 9072 states have (on average 1.3844797178130512) internal successors, (12560), 9219 states have internal predecessors, (12560), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1836), 1708 states have call predecessors, (1836), 1694 states have call successors, (1836) [2022-07-22 23:29:15,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 16095 transitions. [2022-07-22 23:29:15,051 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 16095 transitions. Word has length 122 [2022-07-22 23:29:15,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:29:15,051 INFO L495 AbstractCegarLoop]: Abstraction has 11436 states and 16095 transitions. [2022-07-22 23:29:15,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-22 23:29:15,051 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 16095 transitions. [2022-07-22 23:29:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 23:29:15,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:29:15,059 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:29:15,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 23:29:15,060 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:29:15,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:29:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1198237660, now seen corresponding path program 1 times [2022-07-22 23:29:15,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:29:15,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667355416] [2022-07-22 23:29:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:29:15,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:29:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:15,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:29:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:15,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:29:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:15,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:29:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:29:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 23:29:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:15,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:29:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 23:29:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:15,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 23:29:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 23:29:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 23:29:15,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:29:15,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667355416] [2022-07-22 23:29:15,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667355416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:29:15,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:29:15,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:29:15,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483177137] [2022-07-22 23:29:15,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:29:15,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:29:15,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:29:15,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:29:15,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:29:15,275 INFO L87 Difference]: Start difference. First operand 11436 states and 16095 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:29:18,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:20,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:22,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:27,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:31,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:29:31,676 INFO L93 Difference]: Finished difference Result 24730 states and 35135 transitions. [2022-07-22 23:29:31,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:29:31,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 122 [2022-07-22 23:29:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:29:31,723 INFO L225 Difference]: With dead ends: 24730 [2022-07-22 23:29:31,723 INFO L226 Difference]: Without dead ends: 13285 [2022-07-22 23:29:31,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:29:31,751 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 2207 mSDsluCounter, 2806 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 881 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2343 SdHoareTripleChecker+Valid, 4268 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:29:31,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2343 Valid, 4268 Invalid, 3392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 2507 Invalid, 4 Unknown, 0 Unchecked, 15.9s Time] [2022-07-22 23:29:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13285 states. [2022-07-22 23:29:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13285 to 11438. [2022-07-22 23:29:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11438 states, 9074 states have (on average 1.3837337447652633) internal successors, (12556), 9221 states have internal predecessors, (12556), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1836), 1708 states have call predecessors, (1836), 1694 states have call successors, (1836) [2022-07-22 23:29:32,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11438 states to 11438 states and 16091 transitions. [2022-07-22 23:29:32,116 INFO L78 Accepts]: Start accepts. Automaton has 11438 states and 16091 transitions. Word has length 122 [2022-07-22 23:29:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:29:32,117 INFO L495 AbstractCegarLoop]: Abstraction has 11438 states and 16091 transitions. [2022-07-22 23:29:32,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:29:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 11438 states and 16091 transitions. [2022-07-22 23:29:32,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 23:29:32,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:29:32,124 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:29:32,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 23:29:32,124 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:29:32,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:29:32,125 INFO L85 PathProgramCache]: Analyzing trace with hash 513237223, now seen corresponding path program 1 times [2022-07-22 23:29:32,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:29:32,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031289166] [2022-07-22 23:29:32,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:29:32,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:29:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:32,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:29:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:32,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:29:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:32,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:29:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:32,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:29:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 23:29:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:32,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:29:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:29:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:32,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:29:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:32,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 23:29:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:29:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 23:29:32,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:29:32,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031289166] [2022-07-22 23:29:32,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031289166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:29:32,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:29:32,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:29:32,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314135865] [2022-07-22 23:29:32,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:29:32,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:29:32,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:29:32,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:29:32,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:29:32,334 INFO L87 Difference]: Start difference. First operand 11438 states and 16091 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:29:36,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:38,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:40,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:42,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:44,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:48,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:50,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:52,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:29:54,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:00,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:08,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:08,209 INFO L93 Difference]: Finished difference Result 30598 states and 43519 transitions. [2022-07-22 23:30:08,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 23:30:08,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 125 [2022-07-22 23:30:08,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:08,279 INFO L225 Difference]: With dead ends: 30598 [2022-07-22 23:30:08,280 INFO L226 Difference]: Without dead ends: 19163 [2022-07-22 23:30:08,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:30:08,312 INFO L413 NwaCegarLoop]: 2908 mSDtfsCounter, 3096 mSDsluCounter, 7240 mSDsCounter, 0 mSdLazyCounter, 6677 mSolverCounterSat, 1008 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3301 SdHoareTripleChecker+Valid, 10148 SdHoareTripleChecker+Invalid, 7695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 6677 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:08,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3301 Valid, 10148 Invalid, 7695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 6677 Invalid, 10 Unknown, 0 Unchecked, 34.9s Time] [2022-07-22 23:30:08,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19163 states. [2022-07-22 23:30:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19163 to 11454. [2022-07-22 23:30:08,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11454 states, 9086 states have (on average 1.3832269425489765) internal successors, (12568), 9233 states have internal predecessors, (12568), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 668 states have return successors, (1844), 1712 states have call predecessors, (1844), 1694 states have call successors, (1844) [2022-07-22 23:30:08,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11454 states to 11454 states and 16111 transitions. [2022-07-22 23:30:08,878 INFO L78 Accepts]: Start accepts. Automaton has 11454 states and 16111 transitions. Word has length 125 [2022-07-22 23:30:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:08,878 INFO L495 AbstractCegarLoop]: Abstraction has 11454 states and 16111 transitions. [2022-07-22 23:30:08,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:30:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 11454 states and 16111 transitions. [2022-07-22 23:30:08,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-22 23:30:08,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:08,887 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:08,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 23:30:08,888 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:08,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:08,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1487946240, now seen corresponding path program 1 times [2022-07-22 23:30:08,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:30:08,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057277580] [2022-07-22 23:30:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:08,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:30:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:08,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:30:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:30:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:30:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:30:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:30:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:30:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:30:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:30:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:30:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 23:30:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 23:30:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:30:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 23:30:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:30:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 23:30:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:09,164 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-22 23:30:09,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:30:09,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057277580] [2022-07-22 23:30:09,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057277580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:09,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:09,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:30:09,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174029518] [2022-07-22 23:30:09,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:09,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:30:09,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:30:09,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:30:09,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:30:09,166 INFO L87 Difference]: Start difference. First operand 11454 states and 16111 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 23:30:12,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:14,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:17,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:19,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:21,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:25,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:27,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:29,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:32,669 INFO L93 Difference]: Finished difference Result 25367 states and 36373 transitions. [2022-07-22 23:30:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:30:32,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 171 [2022-07-22 23:30:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:32,723 INFO L225 Difference]: With dead ends: 25367 [2022-07-22 23:30:32,724 INFO L226 Difference]: Without dead ends: 13916 [2022-07-22 23:30:32,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:30:32,755 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1675 mSDsluCounter, 3838 mSDsCounter, 0 mSdLazyCounter, 3483 mSolverCounterSat, 425 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 5351 SdHoareTripleChecker+Invalid, 3915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 3483 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:32,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 5351 Invalid, 3915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 3483 Invalid, 7 Unknown, 0 Unchecked, 22.9s Time] [2022-07-22 23:30:32,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13916 states. [2022-07-22 23:30:33,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13916 to 11470. [2022-07-22 23:30:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11470 states, 9102 states have (on average 1.3825532849923095) internal successors, (12584), 9249 states have internal predecessors, (12584), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 668 states have return successors, (1844), 1712 states have call predecessors, (1844), 1694 states have call successors, (1844) [2022-07-22 23:30:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11470 states to 11470 states and 16127 transitions. [2022-07-22 23:30:33,314 INFO L78 Accepts]: Start accepts. Automaton has 11470 states and 16127 transitions. Word has length 171 [2022-07-22 23:30:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:33,314 INFO L495 AbstractCegarLoop]: Abstraction has 11470 states and 16127 transitions. [2022-07-22 23:30:33,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 23:30:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 11470 states and 16127 transitions. [2022-07-22 23:30:33,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-22 23:30:33,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:33,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:33,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 23:30:33,324 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:33,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1556925990, now seen corresponding path program 1 times [2022-07-22 23:30:33,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:30:33,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667646039] [2022-07-22 23:30:33,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:30:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:30:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:30:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:30:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:30:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:30:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:30:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 23:30:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:30:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:30:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:30:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 23:30:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:30:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 23:30:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 23:30:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 23:30:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-22 23:30:33,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:30:33,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667646039] [2022-07-22 23:30:33,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667646039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:33,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:33,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 23:30:33,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186905736] [2022-07-22 23:30:33,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:33,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 23:30:33,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:30:33,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 23:30:33,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:30:33,708 INFO L87 Difference]: Start difference. First operand 11470 states and 16127 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 23:30:38,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []