./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 96a9bd06c2a0348ab1a93991deedda2ae571d70e4f7fb0e32175d69384f432c0 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:03:58,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:03:58,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:03:58,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:03:58,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:03:58,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:03:58,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:03:58,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:03:58,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:03:58,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:03:58,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:03:58,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:03:58,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:03:58,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:03:58,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:03:58,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:03:58,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:03:58,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:03:58,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:03:58,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:03:58,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:03:58,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:03:58,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:03:58,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:03:58,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:03:58,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:03:58,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:03:58,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:03:58,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:03:58,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:03:58,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:03:58,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:03:58,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:03:58,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:03:58,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:03:58,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:03:58,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:03:58,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:03:58,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:03:58,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:03:58,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:03:58,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:03:58,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:03:58,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:03:58,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:03:58,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:03:58,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:03:58,565 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:03:58,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:03:58,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:03:58,566 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:03:58,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:03:58,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:03:58,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:03:58,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:03:58,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:03:58,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:03:58,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:03:58,568 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:03:58,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:03:58,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:03:58,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:03:58,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:03:58,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:03:58,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:03:58,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:03:58,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:03:58,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:03:58,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:03:58,571 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:03:58,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:03:58,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:03:58,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:03:58,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96a9bd06c2a0348ab1a93991deedda2ae571d70e4f7fb0e32175d69384f432c0 [2021-12-14 18:03:58,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:03:58,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:03:58,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:03:58,814 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:03:58,815 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:03:58,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i [2021-12-14 18:03:58,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185d8930b/ffe9b193c91e4df09a208ba1553e74dd/FLAG306dd429e [2021-12-14 18:03:59,550 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:03:59,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i [2021-12-14 18:03:59,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185d8930b/ffe9b193c91e4df09a208ba1553e74dd/FLAG306dd429e [2021-12-14 18:03:59,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185d8930b/ffe9b193c91e4df09a208ba1553e74dd [2021-12-14 18:03:59,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:03:59,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:03:59,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:03:59,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:03:59,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:03:59,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:03:59" (1/1) ... [2021-12-14 18:03:59,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7c3198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:03:59, skipping insertion in model container [2021-12-14 18:03:59,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:03:59" (1/1) ... [2021-12-14 18:03:59,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:03:59,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:04:01,065 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i[147706,147719] [2021-12-14 18:04:01,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:04:01,273 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:04:01,515 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i[147706,147719] [2021-12-14 18:04:01,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:04:01,593 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:04:01,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:01 WrapperNode [2021-12-14 18:04:01,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:04:01,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:04:01,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:04:01,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:04:01,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:01" (1/1) ... [2021-12-14 18:04:01,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:01" (1/1) ... [2021-12-14 18:04:01,773 INFO L137 Inliner]: procedures = 222, calls = 859, calls flagged for inlining = 79, calls inlined = 74, statements flattened = 2375 [2021-12-14 18:04:01,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:04:01,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:04:01,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:04:01,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:04:01,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:01" (1/1) ... [2021-12-14 18:04:01,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:01" (1/1) ... [2021-12-14 18:04:01,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:01" (1/1) ... [2021-12-14 18:04:01,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:01" (1/1) ... [2021-12-14 18:04:01,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:01" (1/1) ... [2021-12-14 18:04:01,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:01" (1/1) ... [2021-12-14 18:04:01,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:01" (1/1) ... [2021-12-14 18:04:01,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:04:01,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:04:01,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:04:01,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:04:01,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:01" (1/1) ... [2021-12-14 18:04:01,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:04:01,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:04:01,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 18:04:01,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 18:04:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_port_mutex_of_lp_struct [2021-12-14 18:04:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_port_mutex_of_lp_struct [2021-12-14 18:04:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-14 18:04:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure lp_error [2021-12-14 18:04:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure lp_error [2021-12-14 18:04:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:04:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:04:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:04:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:04:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure lp_register [2021-12-14 18:04:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure lp_register [2021-12-14 18:04:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-12-14 18:04:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-12-14 18:04:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 18:04:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 18:04:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure lp_release_parport [2021-12-14 18:04:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure lp_release_parport [2021-12-14 18:04:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:04:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:04:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 18:04:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 18:04:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:04:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:04:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:04:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:04:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 18:04:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 18:04:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-14 18:04:02,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-14 18:04:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_port_mutex_of_lp_struct [2021-12-14 18:04:02,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_port_mutex_of_lp_struct [2021-12-14 18:04:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:04:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure lp_set_timeout [2021-12-14 18:04:02,021 INFO L138 BoogieDeclarations]: Found implementation of procedure lp_set_timeout [2021-12-14 18:04:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure lp_reset [2021-12-14 18:04:02,022 INFO L138 BoogieDeclarations]: Found implementation of procedure lp_reset [2021-12-14 18:04:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_25 [2021-12-14 18:04:02,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_25 [2021-12-14 18:04:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:04:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-14 18:04:02,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-14 18:04:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-14 18:04:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-14 18:04:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-14 18:04:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-14 18:04:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure parport_write [2021-12-14 18:04:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure parport_write [2021-12-14 18:04:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:04:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:04:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-12-14 18:04:02,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-12-14 18:04:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lp_mutex [2021-12-14 18:04:02,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lp_mutex [2021-12-14 18:04:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure test_ti_thread_flag [2021-12-14 18:04:02,024 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ti_thread_flag [2021-12-14 18:04:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure parport_negotiate [2021-12-14 18:04:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure parport_negotiate [2021-12-14 18:04:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure parport_release [2021-12-14 18:04:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure parport_release [2021-12-14 18:04:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_console [2021-12-14 18:04:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_console [2021-12-14 18:04:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure parport_set_timeout [2021-12-14 18:04:02,026 INFO L138 BoogieDeclarations]: Found implementation of procedure parport_set_timeout [2021-12-14 18:04:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:04:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure parport_claim_or_block [2021-12-14 18:04:02,026 INFO L138 BoogieDeclarations]: Found implementation of procedure parport_claim_or_block [2021-12-14 18:04:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure lp_do_ioctl [2021-12-14 18:04:02,026 INFO L138 BoogieDeclarations]: Found implementation of procedure lp_do_ioctl [2021-12-14 18:04:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2021-12-14 18:04:02,027 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2021-12-14 18:04:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:04:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-14 18:04:02,027 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-14 18:04:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:04:02,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:04:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:04:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:04:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure lp_claim_parport_or_block [2021-12-14 18:04:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure lp_claim_parport_or_block [2021-12-14 18:04:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-12-14 18:04:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-12-14 18:04:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:04:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-14 18:04:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-14 18:04:02,029 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-12-14 18:04:02,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:04:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:04:02,029 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-14 18:04:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-14 18:04:02,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:04:02,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-14 18:04:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-14 18:04:02,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:04:02,030 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 18:04:02,030 INFO L130 BoogieDeclarations]: Found specification of procedure lp_detach [2021-12-14 18:04:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure lp_detach [2021-12-14 18:04:02,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lp_mutex [2021-12-14 18:04:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lp_mutex [2021-12-14 18:04:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-14 18:04:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-14 18:04:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure lp_negotiate [2021-12-14 18:04:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure lp_negotiate [2021-12-14 18:04:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-12-14 18:04:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-12-14 18:04:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-14 18:04:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-14 18:04:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure lp_wait_ready [2021-12-14 18:04:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure lp_wait_ready [2021-12-14 18:04:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-14 18:04:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-14 18:04:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-14 18:04:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-14 18:04:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:04:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure lp_write [2021-12-14 18:04:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure lp_write [2021-12-14 18:04:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-12-14 18:04:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-12-14 18:04:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-14 18:04:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-14 18:04:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:04:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:04:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure parport_yield_blocking [2021-12-14 18:04:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure parport_yield_blocking [2021-12-14 18:04:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 18:04:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 18:04:02,539 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:04:02,543 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:04:02,756 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:04:04,074 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:04:04,093 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:04:04,093 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:04:04,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:04:04 BoogieIcfgContainer [2021-12-14 18:04:04,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:04:04,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:04:04,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:04:04,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:04:04,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:03:59" (1/3) ... [2021-12-14 18:04:04,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10026928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:04:04, skipping insertion in model container [2021-12-14 18:04:04,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:01" (2/3) ... [2021-12-14 18:04:04,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10026928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:04:04, skipping insertion in model container [2021-12-14 18:04:04,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:04:04" (3/3) ... [2021-12-14 18:04:04,104 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i [2021-12-14 18:04:04,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:04:04,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:04:04,163 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:04:04,178 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 18:04:04,178 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:04:04,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 594 states have (on average 1.3653198653198653) internal successors, (811), 616 states have internal predecessors, (811), 186 states have call successors, (186), 55 states have call predecessors, (186), 54 states have return successors, (181), 181 states have call predecessors, (181), 181 states have call successors, (181) [2021-12-14 18:04:04,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-14 18:04:04,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:04,243 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:04,244 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:04,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:04,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1568387218, now seen corresponding path program 1 times [2021-12-14 18:04:04,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:04,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408848013] [2021-12-14 18:04:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:04,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:04,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-12-14 18:04:05,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:05,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408848013] [2021-12-14 18:04:05,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408848013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:05,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:05,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 18:04:05,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583607825] [2021-12-14 18:04:05,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:05,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 18:04:05,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:05,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 18:04:05,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:04:05,240 INFO L87 Difference]: Start difference. First operand has 836 states, 594 states have (on average 1.3653198653198653) internal successors, (811), 616 states have internal predecessors, (811), 186 states have call successors, (186), 55 states have call predecessors, (186), 54 states have return successors, (181), 181 states have call predecessors, (181), 181 states have call successors, (181) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 18:04:06,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:06,374 INFO L93 Difference]: Finished difference Result 1703 states and 2447 transitions. [2021-12-14 18:04:06,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:04:06,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 180 [2021-12-14 18:04:06,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:06,410 INFO L225 Difference]: With dead ends: 1703 [2021-12-14 18:04:06,411 INFO L226 Difference]: Without dead ends: 860 [2021-12-14 18:04:06,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:04:06,439 INFO L933 BasicCegarLoop]: 1084 mSDtfsCounter, 759 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:06,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 1629 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 18:04:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-12-14 18:04:06,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 824. [2021-12-14 18:04:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 589 states have (on average 1.3548387096774193) internal successors, (798), 604 states have internal predecessors, (798), 181 states have call successors, (181), 54 states have call predecessors, (181), 53 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172) [2021-12-14 18:04:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1151 transitions. [2021-12-14 18:04:06,568 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1151 transitions. Word has length 180 [2021-12-14 18:04:06,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:06,569 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 1151 transitions. [2021-12-14 18:04:06,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 18:04:06,570 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1151 transitions. [2021-12-14 18:04:06,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-14 18:04:06,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:06,580 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:06,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:04:06,581 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1316851578, now seen corresponding path program 1 times [2021-12-14 18:04:06,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:06,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784468840] [2021-12-14 18:04:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:06,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:06,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-12-14 18:04:07,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:07,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784468840] [2021-12-14 18:04:07,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784468840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:07,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:07,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 18:04:07,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941207423] [2021-12-14 18:04:07,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:07,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 18:04:07,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:07,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 18:04:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:04:07,009 INFO L87 Difference]: Start difference. First operand 824 states and 1151 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-14 18:04:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:09,463 INFO L93 Difference]: Finished difference Result 2290 states and 3338 transitions. [2021-12-14 18:04:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 18:04:09,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 180 [2021-12-14 18:04:09,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:09,475 INFO L225 Difference]: With dead ends: 2290 [2021-12-14 18:04:09,475 INFO L226 Difference]: Without dead ends: 1504 [2021-12-14 18:04:09,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-12-14 18:04:09,480 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 2375 mSDsluCounter, 4246 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 953 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2495 SdHoareTripleChecker+Valid, 5890 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 953 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:09,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2495 Valid, 5890 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [953 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 18:04:09,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-12-14 18:04:09,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 828. [2021-12-14 18:04:09,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 593 states have (on average 1.3524451939291737) internal successors, (802), 608 states have internal predecessors, (802), 181 states have call successors, (181), 54 states have call predecessors, (181), 53 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172) [2021-12-14 18:04:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1155 transitions. [2021-12-14 18:04:09,536 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1155 transitions. Word has length 180 [2021-12-14 18:04:09,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:09,538 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 1155 transitions. [2021-12-14 18:04:09,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-14 18:04:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1155 transitions. [2021-12-14 18:04:09,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-14 18:04:09,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:09,541 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:09,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:04:09,542 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:09,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:09,543 INFO L85 PathProgramCache]: Analyzing trace with hash -839665190, now seen corresponding path program 1 times [2021-12-14 18:04:09,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:09,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509203299] [2021-12-14 18:04:09,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:09,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:04:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-12-14 18:04:09,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:09,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509203299] [2021-12-14 18:04:09,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509203299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:09,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:09,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:04:09,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289797272] [2021-12-14 18:04:09,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:09,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:04:09,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:09,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:04:09,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:04:09,844 INFO L87 Difference]: Start difference. First operand 828 states and 1155 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 18:04:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:11,581 INFO L93 Difference]: Finished difference Result 1918 states and 2663 transitions. [2021-12-14 18:04:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:04:11,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 184 [2021-12-14 18:04:11,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:11,589 INFO L225 Difference]: With dead ends: 1918 [2021-12-14 18:04:11,590 INFO L226 Difference]: Without dead ends: 1128 [2021-12-14 18:04:11,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:04:11,600 INFO L933 BasicCegarLoop]: 1084 mSDtfsCounter, 979 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:11,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 3403 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 18:04:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-12-14 18:04:11,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1059. [2021-12-14 18:04:11,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 773 states have (on average 1.3557567917205693) internal successors, (1048), 790 states have internal predecessors, (1048), 210 states have call successors, (210), 76 states have call predecessors, (210), 75 states have return successors, (201), 200 states have call predecessors, (201), 201 states have call successors, (201) [2021-12-14 18:04:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1459 transitions. [2021-12-14 18:04:11,652 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1459 transitions. Word has length 184 [2021-12-14 18:04:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:11,653 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 1459 transitions. [2021-12-14 18:04:11,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 18:04:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1459 transitions. [2021-12-14 18:04:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-14 18:04:11,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:11,656 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:11,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:04:11,656 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:11,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash -104390022, now seen corresponding path program 1 times [2021-12-14 18:04:11,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:11,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127140975] [2021-12-14 18:04:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:11,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:11,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-12-14 18:04:12,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:12,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127140975] [2021-12-14 18:04:12,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127140975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:12,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:12,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:04:12,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694736109] [2021-12-14 18:04:12,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:12,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:04:12,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:12,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:04:12,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:04:12,029 INFO L87 Difference]: Start difference. First operand 1059 states and 1459 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 18:04:13,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:13,427 INFO L93 Difference]: Finished difference Result 1101 states and 1526 transitions. [2021-12-14 18:04:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 18:04:13,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 185 [2021-12-14 18:04:13,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:13,434 INFO L225 Difference]: With dead ends: 1101 [2021-12-14 18:04:13,434 INFO L226 Difference]: Without dead ends: 1098 [2021-12-14 18:04:13,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:04:13,436 INFO L933 BasicCegarLoop]: 1065 mSDtfsCounter, 1412 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:13,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 2558 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 18:04:13,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-12-14 18:04:13,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1058. [2021-12-14 18:04:13,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 773 states have (on average 1.3544631306597672) internal successors, (1047), 789 states have internal predecessors, (1047), 209 states have call successors, (209), 76 states have call predecessors, (209), 75 states have return successors, (201), 200 states have call predecessors, (201), 201 states have call successors, (201) [2021-12-14 18:04:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1457 transitions. [2021-12-14 18:04:13,488 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1457 transitions. Word has length 185 [2021-12-14 18:04:13,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:13,489 INFO L470 AbstractCegarLoop]: Abstraction has 1058 states and 1457 transitions. [2021-12-14 18:04:13,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 18:04:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1457 transitions. [2021-12-14 18:04:13,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-14 18:04:13,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:13,491 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:13,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 18:04:13,492 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:13,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1058621727, now seen corresponding path program 1 times [2021-12-14 18:04:13,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:13,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451597739] [2021-12-14 18:04:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:13,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-12-14 18:04:13,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:13,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451597739] [2021-12-14 18:04:13,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451597739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:13,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:13,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:04:13,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817730357] [2021-12-14 18:04:13,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:13,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:04:13,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:04:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:04:13,804 INFO L87 Difference]: Start difference. First operand 1058 states and 1457 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 18:04:15,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:15,290 INFO L93 Difference]: Finished difference Result 1100 states and 1524 transitions. [2021-12-14 18:04:15,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 18:04:15,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 186 [2021-12-14 18:04:15,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:15,296 INFO L225 Difference]: With dead ends: 1100 [2021-12-14 18:04:15,297 INFO L226 Difference]: Without dead ends: 1097 [2021-12-14 18:04:15,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:04:15,299 INFO L933 BasicCegarLoop]: 1063 mSDtfsCounter, 1409 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:15,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 2553 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 18:04:15,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2021-12-14 18:04:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1057. [2021-12-14 18:04:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 773 states have (on average 1.3531694695989651) internal successors, (1046), 788 states have internal predecessors, (1046), 208 states have call successors, (208), 76 states have call predecessors, (208), 75 states have return successors, (201), 200 states have call predecessors, (201), 201 states have call successors, (201) [2021-12-14 18:04:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1455 transitions. [2021-12-14 18:04:15,349 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1455 transitions. Word has length 186 [2021-12-14 18:04:15,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:15,350 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1455 transitions. [2021-12-14 18:04:15,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 18:04:15,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1455 transitions. [2021-12-14 18:04:15,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-14 18:04:15,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:15,353 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:15,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 18:04:15,353 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:15,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:15,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1542714851, now seen corresponding path program 1 times [2021-12-14 18:04:15,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:15,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090885452] [2021-12-14 18:04:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:15,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-12-14 18:04:15,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:15,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090885452] [2021-12-14 18:04:15,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090885452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:15,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:15,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:04:15,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058446166] [2021-12-14 18:04:15,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:15,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:04:15,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:04:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:04:15,662 INFO L87 Difference]: Start difference. First operand 1057 states and 1455 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 18:04:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:17,101 INFO L93 Difference]: Finished difference Result 1225 states and 1649 transitions. [2021-12-14 18:04:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:04:17,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 187 [2021-12-14 18:04:17,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:17,108 INFO L225 Difference]: With dead ends: 1225 [2021-12-14 18:04:17,108 INFO L226 Difference]: Without dead ends: 1221 [2021-12-14 18:04:17,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:04:17,111 INFO L933 BasicCegarLoop]: 1068 mSDtfsCounter, 1446 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:17,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1535 Valid, 2266 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 18:04:17,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2021-12-14 18:04:17,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1175. [2021-12-14 18:04:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 852 states have (on average 1.3274647887323943) internal successors, (1131), 865 states have internal predecessors, (1131), 224 states have call successors, (224), 99 states have call predecessors, (224), 98 states have return successors, (219), 218 states have call predecessors, (219), 219 states have call successors, (219) [2021-12-14 18:04:17,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1574 transitions. [2021-12-14 18:04:17,163 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1574 transitions. Word has length 187 [2021-12-14 18:04:17,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:17,164 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 1574 transitions. [2021-12-14 18:04:17,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 18:04:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1574 transitions. [2021-12-14 18:04:17,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-14 18:04:17,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:17,168 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:17,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 18:04:17,168 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:17,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:17,169 INFO L85 PathProgramCache]: Analyzing trace with hash -579765278, now seen corresponding path program 1 times [2021-12-14 18:04:17,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:17,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282714693] [2021-12-14 18:04:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:17,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-12-14 18:04:17,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:17,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282714693] [2021-12-14 18:04:17,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282714693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:17,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:17,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:04:17,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147052724] [2021-12-14 18:04:17,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:17,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:04:17,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:17,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:04:17,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:04:17,500 INFO L87 Difference]: Start difference. First operand 1175 states and 1574 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 18:04:18,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:18,493 INFO L93 Difference]: Finished difference Result 1219 states and 1642 transitions. [2021-12-14 18:04:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 18:04:18,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 188 [2021-12-14 18:04:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:18,503 INFO L225 Difference]: With dead ends: 1219 [2021-12-14 18:04:18,503 INFO L226 Difference]: Without dead ends: 1216 [2021-12-14 18:04:18,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:04:18,506 INFO L933 BasicCegarLoop]: 1057 mSDtfsCounter, 1665 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:18,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1776 Valid, 1588 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 18:04:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-12-14 18:04:18,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1174. [2021-12-14 18:04:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 852 states have (on average 1.3262910798122065) internal successors, (1130), 864 states have internal predecessors, (1130), 223 states have call successors, (223), 99 states have call predecessors, (223), 98 states have return successors, (219), 218 states have call predecessors, (219), 219 states have call successors, (219) [2021-12-14 18:04:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1572 transitions. [2021-12-14 18:04:18,563 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1572 transitions. Word has length 188 [2021-12-14 18:04:18,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:18,564 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1572 transitions. [2021-12-14 18:04:18,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 18:04:18,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1572 transitions. [2021-12-14 18:04:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 18:04:18,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:18,567 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:18,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 18:04:18,568 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:18,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:18,568 INFO L85 PathProgramCache]: Analyzing trace with hash -793094720, now seen corresponding path program 1 times [2021-12-14 18:04:18,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:18,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118711134] [2021-12-14 18:04:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:18,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-12-14 18:04:18,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:18,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118711134] [2021-12-14 18:04:18,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118711134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:18,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:18,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:04:18,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239686143] [2021-12-14 18:04:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:18,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:04:18,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:18,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:04:18,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:04:18,868 INFO L87 Difference]: Start difference. First operand 1174 states and 1572 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 18:04:20,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:20,999 INFO L93 Difference]: Finished difference Result 3490 states and 4715 transitions. [2021-12-14 18:04:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:04:20,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 189 [2021-12-14 18:04:21,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:21,010 INFO L225 Difference]: With dead ends: 3490 [2021-12-14 18:04:21,010 INFO L226 Difference]: Without dead ends: 2330 [2021-12-14 18:04:21,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:04:21,015 INFO L933 BasicCegarLoop]: 1443 mSDtfsCounter, 1777 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:21,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 3601 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 18:04:21,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2021-12-14 18:04:21,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2249. [2021-12-14 18:04:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2249 states, 1641 states have (on average 1.3302864107251675) internal successors, (2183), 1664 states have internal predecessors, (2183), 417 states have call successors, (417), 191 states have call predecessors, (417), 190 states have return successors, (426), 409 states have call predecessors, (426), 410 states have call successors, (426) [2021-12-14 18:04:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 3026 transitions. [2021-12-14 18:04:21,116 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 3026 transitions. Word has length 189 [2021-12-14 18:04:21,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:21,117 INFO L470 AbstractCegarLoop]: Abstraction has 2249 states and 3026 transitions. [2021-12-14 18:04:21,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 18:04:21,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 3026 transitions. [2021-12-14 18:04:21,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-12-14 18:04:21,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:21,122 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2021-12-14 18:04:21,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 18:04:21,122 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:21,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2000675306, now seen corresponding path program 1 times [2021-12-14 18:04:21,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:21,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074196172] [2021-12-14 18:04:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:21,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 18:04:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-14 18:04:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-14 18:04:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-14 18:04:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-14 18:04:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2021-12-14 18:04:21,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:21,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074196172] [2021-12-14 18:04:21,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074196172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:21,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:21,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:04:21,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397440212] [2021-12-14 18:04:21,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:21,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:04:21,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:21,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:04:21,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:04:21,501 INFO L87 Difference]: Start difference. First operand 2249 states and 3026 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 18:04:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:23,542 INFO L93 Difference]: Finished difference Result 4545 states and 6131 transitions. [2021-12-14 18:04:23,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:04:23,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 249 [2021-12-14 18:04:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:23,554 INFO L225 Difference]: With dead ends: 4545 [2021-12-14 18:04:23,554 INFO L226 Difference]: Without dead ends: 2334 [2021-12-14 18:04:23,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-14 18:04:23,562 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 904 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:23,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 3111 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 18:04:23,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2021-12-14 18:04:23,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2251. [2021-12-14 18:04:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 1643 states have (on average 1.3298843578819233) internal successors, (2185), 1666 states have internal predecessors, (2185), 417 states have call successors, (417), 191 states have call predecessors, (417), 190 states have return successors, (426), 409 states have call predecessors, (426), 410 states have call successors, (426) [2021-12-14 18:04:23,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3028 transitions. [2021-12-14 18:04:23,655 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3028 transitions. Word has length 249 [2021-12-14 18:04:23,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:23,656 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 3028 transitions. [2021-12-14 18:04:23,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 18:04:23,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3028 transitions. [2021-12-14 18:04:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-12-14 18:04:23,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:23,661 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2021-12-14 18:04:23,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 18:04:23,662 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:23,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1302948285, now seen corresponding path program 1 times [2021-12-14 18:04:23,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:23,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461144969] [2021-12-14 18:04:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:23,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:04:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-14 18:04:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-14 18:04:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-14 18:04:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:23,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-14 18:04:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:24,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-14 18:04:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-14 18:04:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2021-12-14 18:04:24,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:24,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461144969] [2021-12-14 18:04:24,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461144969] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:04:24,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982268253] [2021-12-14 18:04:24,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:24,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:04:24,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:04:24,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 18:04:24,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 18:04:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:24,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 2461 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 18:04:24,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:04:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-12-14 18:04:24,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:04:24,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982268253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:24,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:04:24,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-14 18:04:24,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531115215] [2021-12-14 18:04:24,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:24,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 18:04:24,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:24,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 18:04:24,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:04:24,970 INFO L87 Difference]: Start difference. First operand 2251 states and 3028 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-14 18:04:25,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:25,062 INFO L93 Difference]: Finished difference Result 4475 states and 6013 transitions. [2021-12-14 18:04:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 18:04:25,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 261 [2021-12-14 18:04:25,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:25,074 INFO L225 Difference]: With dead ends: 4475 [2021-12-14 18:04:25,075 INFO L226 Difference]: Without dead ends: 2260 [2021-12-14 18:04:25,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:04:25,083 INFO L933 BasicCegarLoop]: 1141 mSDtfsCounter, 9 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:25,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2276 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 18:04:25,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2021-12-14 18:04:25,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 2244. [2021-12-14 18:04:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 1636 states have (on average 1.3288508557457213) internal successors, (2174), 1659 states have internal predecessors, (2174), 417 states have call successors, (417), 191 states have call predecessors, (417), 190 states have return successors, (426), 409 states have call predecessors, (426), 410 states have call successors, (426) [2021-12-14 18:04:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3017 transitions. [2021-12-14 18:04:25,211 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3017 transitions. Word has length 261 [2021-12-14 18:04:25,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:25,212 INFO L470 AbstractCegarLoop]: Abstraction has 2244 states and 3017 transitions. [2021-12-14 18:04:25,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-14 18:04:25,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3017 transitions. [2021-12-14 18:04:25,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-12-14 18:04:25,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:25,216 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2021-12-14 18:04:25,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 18:04:25,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-14 18:04:25,440 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:25,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1917832635, now seen corresponding path program 1 times [2021-12-14 18:04:25,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:25,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702853354] [2021-12-14 18:04:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:25,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:04:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-14 18:04:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-14 18:04:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-14 18:04:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-14 18:04:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-14 18:04:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-14 18:04:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-14 18:04:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-12-14 18:04:25,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:25,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702853354] [2021-12-14 18:04:25,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702853354] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:04:25,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417851857] [2021-12-14 18:04:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:25,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:04:25,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:04:25,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 18:04:25,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 18:04:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:26,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 2541 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 18:04:26,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:04:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 255 proven. 1 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-12-14 18:04:26,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 18:04:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-12-14 18:04:27,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417851857] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 18:04:27,526 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 18:04:27,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-14 18:04:27,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065763977] [2021-12-14 18:04:27,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 18:04:27,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 18:04:27,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 18:04:27,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-14 18:04:27,529 INFO L87 Difference]: Start difference. First operand 2244 states and 3017 transitions. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 7 states have internal predecessors, (120), 5 states have call successors, (59), 6 states have call predecessors, (59), 2 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2021-12-14 18:04:29,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:29,955 INFO L93 Difference]: Finished difference Result 4559 states and 6149 transitions. [2021-12-14 18:04:29,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 18:04:29,956 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 7 states have internal predecessors, (120), 5 states have call successors, (59), 6 states have call predecessors, (59), 2 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) Word has length 278 [2021-12-14 18:04:29,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:29,966 INFO L225 Difference]: With dead ends: 4559 [2021-12-14 18:04:29,967 INFO L226 Difference]: Without dead ends: 2353 [2021-12-14 18:04:29,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-12-14 18:04:29,975 INFO L933 BasicCegarLoop]: 1023 mSDtfsCounter, 913 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 4070 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 706 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:29,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 4070 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [706 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 18:04:29,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-12-14 18:04:30,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 2280. [2021-12-14 18:04:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 1660 states have (on average 1.3240963855421686) internal successors, (2198), 1683 states have internal predecessors, (2198), 429 states have call successors, (429), 191 states have call predecessors, (429), 190 states have return successors, (438), 421 states have call predecessors, (438), 422 states have call successors, (438) [2021-12-14 18:04:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3065 transitions. [2021-12-14 18:04:30,082 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3065 transitions. Word has length 278 [2021-12-14 18:04:30,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:30,083 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 3065 transitions. [2021-12-14 18:04:30,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 7 states have internal predecessors, (120), 5 states have call successors, (59), 6 states have call predecessors, (59), 2 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2021-12-14 18:04:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3065 transitions. [2021-12-14 18:04:30,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-12-14 18:04:30,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:30,087 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-14 18:04:30,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 18:04:30,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-14 18:04:30,315 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:30,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:30,316 INFO L85 PathProgramCache]: Analyzing trace with hash 601794288, now seen corresponding path program 2 times [2021-12-14 18:04:30,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:30,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813217841] [2021-12-14 18:04:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:30,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:04:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-14 18:04:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-14 18:04:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-14 18:04:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 18:04:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-14 18:04:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-14 18:04:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-14 18:04:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-14 18:04:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-14 18:04:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-14 18:04:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-14 18:04:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-14 18:04:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-12-14 18:04:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2021-12-14 18:04:30,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:30,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813217841] [2021-12-14 18:04:30,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813217841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:30,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:30,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:04:30,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855741276] [2021-12-14 18:04:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:30,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:04:30,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:04:30,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:04:30,823 INFO L87 Difference]: Start difference. First operand 2280 states and 3065 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (27), 7 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-14 18:04:32,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:32,738 INFO L93 Difference]: Finished difference Result 2361 states and 3185 transitions. [2021-12-14 18:04:32,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 18:04:32,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (27), 7 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 314 [2021-12-14 18:04:32,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:32,750 INFO L225 Difference]: With dead ends: 2361 [2021-12-14 18:04:32,750 INFO L226 Difference]: Without dead ends: 2358 [2021-12-14 18:04:32,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-14 18:04:32,752 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 1151 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 802 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 802 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:32,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 2941 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [802 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 18:04:32,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2021-12-14 18:04:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2279. [2021-12-14 18:04:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 1660 states have (on average 1.3228915662650602) internal successors, (2196), 1682 states have internal predecessors, (2196), 428 states have call successors, (428), 191 states have call predecessors, (428), 190 states have return successors, (438), 421 states have call predecessors, (438), 422 states have call successors, (438) [2021-12-14 18:04:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3062 transitions. [2021-12-14 18:04:32,881 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3062 transitions. Word has length 314 [2021-12-14 18:04:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:32,882 INFO L470 AbstractCegarLoop]: Abstraction has 2279 states and 3062 transitions. [2021-12-14 18:04:32,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (27), 7 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-14 18:04:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3062 transitions. [2021-12-14 18:04:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-12-14 18:04:32,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:32,888 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:32,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 18:04:32,888 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:32,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:32,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1891311777, now seen corresponding path program 1 times [2021-12-14 18:04:32,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:32,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616692314] [2021-12-14 18:04:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:32,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:04:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-14 18:04:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-14 18:04:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-14 18:04:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 18:04:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-14 18:04:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-14 18:04:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-14 18:04:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-14 18:04:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-14 18:04:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-14 18:04:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-14 18:04:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-14 18:04:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-12-14 18:04:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-14 18:04:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-14 18:04:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 18:04:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2021-12-14 18:04:33,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:33,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616692314] [2021-12-14 18:04:33,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616692314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:33,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:33,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:04:33,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139983313] [2021-12-14 18:04:33,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:33,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:04:33,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:33,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:04:33,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:04:33,355 INFO L87 Difference]: Start difference. First operand 2279 states and 3062 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (33), 7 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-14 18:04:35,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:35,591 INFO L93 Difference]: Finished difference Result 4602 states and 6192 transitions. [2021-12-14 18:04:35,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:04:35,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (33), 7 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 345 [2021-12-14 18:04:35,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:35,603 INFO L225 Difference]: With dead ends: 4602 [2021-12-14 18:04:35,603 INFO L226 Difference]: Without dead ends: 2361 [2021-12-14 18:04:35,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-14 18:04:35,611 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 2370 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 1432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 3892 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1432 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:35,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2498 Valid, 3892 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1432 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 18:04:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2021-12-14 18:04:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2276. [2021-12-14 18:04:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 1657 states have (on average 1.3210621605310802) internal successors, (2189), 1680 states have internal predecessors, (2189), 428 states have call successors, (428), 190 states have call predecessors, (428), 190 states have return successors, (424), 421 states have call predecessors, (424), 417 states have call successors, (424) [2021-12-14 18:04:35,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3041 transitions. [2021-12-14 18:04:35,704 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3041 transitions. Word has length 345 [2021-12-14 18:04:35,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:35,704 INFO L470 AbstractCegarLoop]: Abstraction has 2276 states and 3041 transitions. [2021-12-14 18:04:35,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (33), 7 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-14 18:04:35,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3041 transitions. [2021-12-14 18:04:35,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-12-14 18:04:35,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:35,710 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:35,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 18:04:35,710 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:35,711 INFO L85 PathProgramCache]: Analyzing trace with hash -518397778, now seen corresponding path program 1 times [2021-12-14 18:04:35,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:35,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953466897] [2021-12-14 18:04:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:35,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:35,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:04:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-14 18:04:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-14 18:04:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-14 18:04:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 18:04:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-14 18:04:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-14 18:04:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-14 18:04:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-14 18:04:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-14 18:04:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-14 18:04:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-14 18:04:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-14 18:04:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-12-14 18:04:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-14 18:04:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-12-14 18:04:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 18:04:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2021-12-14 18:04:36,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:36,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953466897] [2021-12-14 18:04:36,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953466897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:36,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:36,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:04:36,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361654772] [2021-12-14 18:04:36,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:36,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:04:36,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:36,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:04:36,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:04:36,181 INFO L87 Difference]: Start difference. First operand 2276 states and 3041 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (33), 6 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 18:04:38,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:38,253 INFO L93 Difference]: Finished difference Result 5741 states and 7651 transitions. [2021-12-14 18:04:38,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:04:38,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (33), 6 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 346 [2021-12-14 18:04:38,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:38,272 INFO L225 Difference]: With dead ends: 5741 [2021-12-14 18:04:38,272 INFO L226 Difference]: Without dead ends: 3503 [2021-12-14 18:04:38,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-14 18:04:38,282 INFO L933 BasicCegarLoop]: 1446 mSDtfsCounter, 2394 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 3525 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:38,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2478 Valid, 3525 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 18:04:38,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2021-12-14 18:04:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 3285. [2021-12-14 18:04:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3285 states, 2415 states have (on average 1.3250517598343685) internal successors, (3200), 2450 states have internal predecessors, (3200), 577 states have call successors, (577), 291 states have call predecessors, (577), 292 states have return successors, (574), 568 states have call predecessors, (574), 566 states have call successors, (574) [2021-12-14 18:04:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3285 states to 3285 states and 4351 transitions. [2021-12-14 18:04:38,423 INFO L78 Accepts]: Start accepts. Automaton has 3285 states and 4351 transitions. Word has length 346 [2021-12-14 18:04:38,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:38,424 INFO L470 AbstractCegarLoop]: Abstraction has 3285 states and 4351 transitions. [2021-12-14 18:04:38,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (33), 6 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 18:04:38,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3285 states and 4351 transitions. [2021-12-14 18:04:38,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-12-14 18:04:38,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:38,430 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:38,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 18:04:38,430 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:38,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:38,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1902627904, now seen corresponding path program 1 times [2021-12-14 18:04:38,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:38,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430376042] [2021-12-14 18:04:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:38,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:04:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-14 18:04:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-14 18:04:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-14 18:04:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 18:04:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-14 18:04:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-14 18:04:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-14 18:04:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-14 18:04:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-14 18:04:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-14 18:04:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-14 18:04:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-14 18:04:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-12-14 18:04:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-14 18:04:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-14 18:04:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:38,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:39,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 18:04:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2021-12-14 18:04:39,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:39,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430376042] [2021-12-14 18:04:39,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430376042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:39,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:39,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 18:04:39,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054769909] [2021-12-14 18:04:39,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:39,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 18:04:39,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:39,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 18:04:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-14 18:04:39,009 INFO L87 Difference]: Start difference. First operand 3285 states and 4351 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-14 18:04:41,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:41,096 INFO L93 Difference]: Finished difference Result 3531 states and 4639 transitions. [2021-12-14 18:04:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 18:04:41,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 345 [2021-12-14 18:04:41,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:41,112 INFO L225 Difference]: With dead ends: 3531 [2021-12-14 18:04:41,112 INFO L226 Difference]: Without dead ends: 3082 [2021-12-14 18:04:41,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-14 18:04:41,116 INFO L933 BasicCegarLoop]: 1053 mSDtfsCounter, 826 mSDsluCounter, 5050 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 6103 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:41,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 6103 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 18:04:41,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2021-12-14 18:04:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 2987. [2021-12-14 18:04:41,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2197 states have (on average 1.3154301319981794) internal successors, (2890), 2225 states have internal predecessors, (2890), 513 states have call successors, (513), 275 states have call predecessors, (513), 276 states have return successors, (511), 506 states have call predecessors, (511), 503 states have call successors, (511) [2021-12-14 18:04:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 3914 transitions. [2021-12-14 18:04:41,247 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 3914 transitions. Word has length 345 [2021-12-14 18:04:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:41,247 INFO L470 AbstractCegarLoop]: Abstraction has 2987 states and 3914 transitions. [2021-12-14 18:04:41,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-14 18:04:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 3914 transitions. [2021-12-14 18:04:41,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-14 18:04:41,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:41,253 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:41,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 18:04:41,254 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:41,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:41,254 INFO L85 PathProgramCache]: Analyzing trace with hash -198496091, now seen corresponding path program 1 times [2021-12-14 18:04:41,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:41,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600346133] [2021-12-14 18:04:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:41,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:04:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-14 18:04:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-14 18:04:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-14 18:04:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 18:04:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-14 18:04:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-14 18:04:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-14 18:04:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-14 18:04:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-14 18:04:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-14 18:04:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-14 18:04:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 18:04:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 18:04:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2021-12-14 18:04:41,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:41,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600346133] [2021-12-14 18:04:41,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600346133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:41,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:41,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 18:04:41,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113806510] [2021-12-14 18:04:41,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:41,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 18:04:41,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:41,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 18:04:41,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-14 18:04:41,864 INFO L87 Difference]: Start difference. First operand 2987 states and 3914 transitions. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 1 states have call successors, (28) [2021-12-14 18:04:44,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:44,154 INFO L93 Difference]: Finished difference Result 4258 states and 5572 transitions. [2021-12-14 18:04:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:04:44,154 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 1 states have call successors, (28) Word has length 352 [2021-12-14 18:04:44,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:44,167 INFO L225 Difference]: With dead ends: 4258 [2021-12-14 18:04:44,167 INFO L226 Difference]: Without dead ends: 3075 [2021-12-14 18:04:44,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-14 18:04:44,173 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 979 mSDsluCounter, 4877 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 5929 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:44,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1021 Valid, 5929 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 18:04:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2021-12-14 18:04:44,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 2980. [2021-12-14 18:04:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2192 states have (on average 1.3152372262773722) internal successors, (2883), 2220 states have internal predecessors, (2883), 513 states have call successors, (513), 275 states have call predecessors, (513), 274 states have return successors, (509), 504 states have call predecessors, (509), 503 states have call successors, (509) [2021-12-14 18:04:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 3905 transitions. [2021-12-14 18:04:44,298 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 3905 transitions. Word has length 352 [2021-12-14 18:04:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:44,299 INFO L470 AbstractCegarLoop]: Abstraction has 2980 states and 3905 transitions. [2021-12-14 18:04:44,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 1 states have call successors, (28) [2021-12-14 18:04:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 3905 transitions. [2021-12-14 18:04:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2021-12-14 18:04:44,308 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:44,308 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:44,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 18:04:44,308 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:44,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2001566487, now seen corresponding path program 1 times [2021-12-14 18:04:44,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:44,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229811805] [2021-12-14 18:04:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:44,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:04:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-14 18:04:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-14 18:04:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-14 18:04:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 18:04:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-14 18:04:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-14 18:04:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-14 18:04:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-14 18:04:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-14 18:04:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-14 18:04:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-14 18:04:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-14 18:04:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-12-14 18:04:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-12-14 18:04:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-12-14 18:04:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-14 18:04:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-14 18:04:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-12-14 18:04:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-12-14 18:04:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2021-12-14 18:04:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2021-12-14 18:04:44,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:44,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229811805] [2021-12-14 18:04:44,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229811805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:44,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:44,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 18:04:44,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111185773] [2021-12-14 18:04:44,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:44,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 18:04:44,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:44,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 18:04:44,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:04:44,819 INFO L87 Difference]: Start difference. First operand 2980 states and 3905 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (34), 7 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-14 18:04:46,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:46,607 INFO L93 Difference]: Finished difference Result 6020 states and 7916 transitions. [2021-12-14 18:04:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 18:04:46,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (34), 7 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 399 [2021-12-14 18:04:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:46,620 INFO L225 Difference]: With dead ends: 6020 [2021-12-14 18:04:46,620 INFO L226 Difference]: Without dead ends: 3078 [2021-12-14 18:04:46,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-14 18:04:46,629 INFO L933 BasicCegarLoop]: 1023 mSDtfsCounter, 1263 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 3179 SdHoareTripleChecker+Invalid, 2663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:46,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 3179 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 18:04:46,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2021-12-14 18:04:46,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2980. [2021-12-14 18:04:46,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2192 states have (on average 1.311131386861314) internal successors, (2874), 2220 states have internal predecessors, (2874), 513 states have call successors, (513), 275 states have call predecessors, (513), 274 states have return successors, (509), 504 states have call predecessors, (509), 503 states have call successors, (509) [2021-12-14 18:04:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 3896 transitions. [2021-12-14 18:04:46,780 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 3896 transitions. Word has length 399 [2021-12-14 18:04:46,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:46,781 INFO L470 AbstractCegarLoop]: Abstraction has 2980 states and 3896 transitions. [2021-12-14 18:04:46,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (34), 7 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-14 18:04:46,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 3896 transitions. [2021-12-14 18:04:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-12-14 18:04:46,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:46,789 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:46,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 18:04:46,789 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:46,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:46,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1712582581, now seen corresponding path program 1 times [2021-12-14 18:04:46,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:46,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265831920] [2021-12-14 18:04:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:46,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:04:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:04:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:04:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:04:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:04:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:04:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:04:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:04:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:04:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:04:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:04:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:04:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:04:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:04:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:04:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-14 18:04:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-14 18:04:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-14 18:04:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 18:04:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-14 18:04:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-14 18:04:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-14 18:04:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-14 18:04:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-14 18:04:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-14 18:04:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:04:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-14 18:04:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-14 18:04:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-12-14 18:04:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-12-14 18:04:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-12-14 18:04:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-14 18:04:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-14 18:04:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-12-14 18:04:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-14 18:04:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-12-14 18:04:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:04:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2021-12-14 18:04:47,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:47,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265831920] [2021-12-14 18:04:47,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265831920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:47,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:47,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 18:04:47,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798221364] [2021-12-14 18:04:47,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:47,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 18:04:47,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:47,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 18:04:47,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-14 18:04:47,271 INFO L87 Difference]: Start difference. First operand 2980 states and 3896 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (34), 7 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 1 states have call successors, (33)