./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.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 f78e25bf76e2d1d395e5e41868c5ddb628a36f1efdf095bb509ea6a3a366617b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:36:56,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:36:56,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:36:56,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:36:56,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:36:56,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:36:56,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:36:56,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:36:56,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:36:56,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:36:56,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:36:56,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:36:56,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:36:56,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:36:56,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:36:56,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:36:56,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:36:56,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:36:56,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:36:56,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:36:56,686 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:36:56,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:36:56,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:36:56,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:36:56,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:36:56,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:36:56,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:36:56,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:36:56,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:36:56,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:36:56,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:36:56,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:36:56,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:36:56,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:36:56,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:36:56,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:36:56,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:36:56,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:36:56,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:36:56,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:36:56,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:36:56,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:36:56,707 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:36:56,733 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:36:56,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:36:56,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:36:56,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:36:56,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:36:56,735 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:36:56,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:36:56,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:36:56,736 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:36:56,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:36:56,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:36:56,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:36:56,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:36:56,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:36:56,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:36:56,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:36:56,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:36:56,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:36:56,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:36:56,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:36:56,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:36:56,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:36:56,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:36:56,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:36:56,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:36:56,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:36:56,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:36:56,741 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:36:56,741 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:36:56,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:36:56,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f78e25bf76e2d1d395e5e41868c5ddb628a36f1efdf095bb509ea6a3a366617b [2022-07-19 23:36:56,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:36:57,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:36:57,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:36:57,006 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:36:57,006 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:36:57,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2022-07-19 23:36:57,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbbbd11d8/3a959aae53344c32924929bd8a337150/FLAG5ced4eb9f [2022-07-19 23:36:57,738 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:36:57,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2022-07-19 23:36:57,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbbbd11d8/3a959aae53344c32924929bd8a337150/FLAG5ced4eb9f [2022-07-19 23:36:58,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbbbd11d8/3a959aae53344c32924929bd8a337150 [2022-07-19 23:36:58,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:36:58,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:36:58,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:36:58,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:36:58,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:36:58,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:36:58" (1/1) ... [2022-07-19 23:36:58,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d867011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:58, skipping insertion in model container [2022-07-19 23:36:58,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:36:58" (1/1) ... [2022-07-19 23:36:58,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:36:58,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:36:58,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i[162928,162941] [2022-07-19 23:36:59,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:36:59,173 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:36:59,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i[162928,162941] [2022-07-19 23:36:59,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:36:59,549 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:36:59,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:59 WrapperNode [2022-07-19 23:36:59,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:36:59,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:36:59,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:36:59,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:36:59,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:59" (1/1) ... [2022-07-19 23:36:59,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:59" (1/1) ... [2022-07-19 23:36:59,722 INFO L137 Inliner]: procedures = 180, calls = 578, calls flagged for inlining = 99, calls inlined = 93, statements flattened = 2426 [2022-07-19 23:36:59,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:36:59,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:36:59,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:36:59,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:36:59,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:59" (1/1) ... [2022-07-19 23:36:59,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:59" (1/1) ... [2022-07-19 23:36:59,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:59" (1/1) ... [2022-07-19 23:36:59,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:59" (1/1) ... [2022-07-19 23:36:59,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:59" (1/1) ... [2022-07-19 23:36:59,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:59" (1/1) ... [2022-07-19 23:36:59,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:59" (1/1) ... [2022-07-19 23:36:59,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:36:59,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:36:59,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:36:59,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:36:59,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:59" (1/1) ... [2022-07-19 23:36:59,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:36:59,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:36:59,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 23:36:59,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 23:36:59,969 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-19 23:36:59,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-19 23:36:59,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 23:36:59,970 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_push [2022-07-19 23:36:59,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_push [2022-07-19 23:36:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-19 23:36:59,971 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-19 23:36:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:36:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:36:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-19 23:36:59,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-19 23:36:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:36:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure crc_ccitt_byte [2022-07-19 23:36:59,972 INFO L138 BoogieDeclarations]: Found implementation of procedure crc_ccitt_byte [2022-07-19 23:36:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure ap_put [2022-07-19 23:36:59,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_put [2022-07-19 23:36:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2022-07-19 23:36:59,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2022-07-19 23:36:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 23:36:59,973 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 23:36:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-19 23:36:59,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-19 23:36:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:36:59,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:36:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_hangup [2022-07-19 23:36:59,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_hangup [2022-07-19 23:36:59,974 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-19 23:36:59,974 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-19 23:36:59,974 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-19 23:36:59,974 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-19 23:36:59,974 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2022-07-19 23:36:59,974 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2022-07-19 23:36:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-19 23:36:59,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-19 23:36:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 23:36:59,975 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 23:36:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:36:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:36:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:36:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:36:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:36:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-19 23:36:59,977 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-19 23:36:59,977 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 23:36:59,977 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 23:36:59,977 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_close [2022-07-19 23:36:59,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_close [2022-07-19 23:36:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:36:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_poll [2022-07-19 23:36:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_poll [2022-07-19 23:36:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-19 23:36:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-19 23:36:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-19 23:36:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-19 23:36:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:36:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:36:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:36:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-07-19 23:36:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-07-19 23:36:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure ap_get [2022-07-19 23:36:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_get [2022-07-19 23:36:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-07-19 23:36:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-07-19 23:36:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:36:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-19 23:36:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-19 23:36:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-07-19 23:36:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-07-19 23:36:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:36:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:36:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-19 23:36:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-19 23:36:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-19 23:36:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-19 23:36:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure async_lcp_peek [2022-07-19 23:36:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure async_lcp_peek [2022-07-19 23:36:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:36:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-19 23:36:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-19 23:36:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 23:36:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-19 23:36:59,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-19 23:36:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-19 23:36:59,985 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-19 23:36:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:36:59,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:36:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_ioctl [2022-07-19 23:36:59,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_ioctl [2022-07-19 23:36:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-19 23:36:59,986 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-19 23:37:00,418 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:37:00,420 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:37:00,794 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-19 23:37:03,941 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:37:03,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:37:03,952 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 23:37:03,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:37:03 BoogieIcfgContainer [2022-07-19 23:37:03,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:37:03,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:37:03,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:37:03,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:37:03,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:36:58" (1/3) ... [2022-07-19 23:37:03,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3cbfd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:37:03, skipping insertion in model container [2022-07-19 23:37:03,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:59" (2/3) ... [2022-07-19 23:37:03,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3cbfd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:37:03, skipping insertion in model container [2022-07-19 23:37:03,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:37:03" (3/3) ... [2022-07-19 23:37:03,967 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2022-07-19 23:37:03,979 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:37:03,980 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:37:04,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:37:04,066 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56adf7de, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@c30b600 [2022-07-19 23:37:04,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:37:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 745 states, 591 states have (on average 1.4568527918781726) internal successors, (861), 605 states have internal predecessors, (861), 116 states have call successors, (116), 37 states have call predecessors, (116), 36 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-19 23:37:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 23:37:04,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:37:04,093 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:37:04,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:37:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:37:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1070293405, now seen corresponding path program 1 times [2022-07-19 23:37:04,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:37:04,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885661409] [2022-07-19 23:37:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:37:04,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:37:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:04,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:37:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:04,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:37:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:37:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:37:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:37:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:37:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:04,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:37:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:37:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:04,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:37:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:04,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:37:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-19 23:37:04,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:37:04,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885661409] [2022-07-19 23:37:04,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885661409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:37:04,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:37:04,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:37:04,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966042085] [2022-07-19 23:37:04,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:37:04,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:37:04,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:37:04,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:37:04,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:37:04,579 INFO L87 Difference]: Start difference. First operand has 745 states, 591 states have (on average 1.4568527918781726) internal successors, (861), 605 states have internal predecessors, (861), 116 states have call successors, (116), 37 states have call predecessors, (116), 36 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-19 23:37:07,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:10,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:10,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:37:10,423 INFO L93 Difference]: Finished difference Result 2318 states and 3473 transitions. [2022-07-19 23:37:10,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:37:10,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 78 [2022-07-19 23:37:10,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:37:10,451 INFO L225 Difference]: With dead ends: 2318 [2022-07-19 23:37:10,452 INFO L226 Difference]: Without dead ends: 1560 [2022-07-19 23:37:10,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:37:10,465 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 1446 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 305 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:37:10,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 2219 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 884 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2022-07-19 23:37:10,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2022-07-19 23:37:10,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1388. [2022-07-19 23:37:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1108 states have (on average 1.4296028880866427) internal successors, (1584), 1124 states have internal predecessors, (1584), 209 states have call successors, (209), 71 states have call predecessors, (209), 70 states have return successors, (208), 208 states have call predecessors, (208), 208 states have call successors, (208) [2022-07-19 23:37:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 2001 transitions. [2022-07-19 23:37:10,697 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 2001 transitions. Word has length 78 [2022-07-19 23:37:10,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:37:10,698 INFO L495 AbstractCegarLoop]: Abstraction has 1388 states and 2001 transitions. [2022-07-19 23:37:10,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-19 23:37:10,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 2001 transitions. [2022-07-19 23:37:10,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-19 23:37:10,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:37:10,702 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:37:10,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:37:10,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:37:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:37:10,704 INFO L85 PathProgramCache]: Analyzing trace with hash 192122725, now seen corresponding path program 1 times [2022-07-19 23:37:10,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:37:10,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790179005] [2022-07-19 23:37:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:37:10,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:37:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:10,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:37:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:37:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:10,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:37:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:10,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:37:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:10,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:37:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:10,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:37:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:10,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:37:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:10,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:37:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:10,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:37:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:10,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:37:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-19 23:37:10,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:37:10,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790179005] [2022-07-19 23:37:10,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790179005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:37:10,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:37:10,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:37:10,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952632287] [2022-07-19 23:37:10,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:37:10,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:37:10,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:37:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:37:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:37:10,891 INFO L87 Difference]: Start difference. First operand 1388 states and 2001 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-19 23:37:14,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:17,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:17,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:37:17,263 INFO L93 Difference]: Finished difference Result 4449 states and 6499 transitions. [2022-07-19 23:37:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:37:17,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 82 [2022-07-19 23:37:17,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:37:17,283 INFO L225 Difference]: With dead ends: 4449 [2022-07-19 23:37:17,283 INFO L226 Difference]: Without dead ends: 3079 [2022-07-19 23:37:17,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:37:17,292 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 1479 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 318 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:37:17,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 3541 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1860 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-07-19 23:37:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2022-07-19 23:37:17,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 2815. [2022-07-19 23:37:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2249 states have (on average 1.4313028012449978) internal successors, (3219), 2287 states have internal predecessors, (3219), 417 states have call successors, (417), 141 states have call predecessors, (417), 148 states have return successors, (458), 418 states have call predecessors, (458), 416 states have call successors, (458) [2022-07-19 23:37:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4094 transitions. [2022-07-19 23:37:17,420 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4094 transitions. Word has length 82 [2022-07-19 23:37:17,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:37:17,422 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 4094 transitions. [2022-07-19 23:37:17,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-19 23:37:17,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4094 transitions. [2022-07-19 23:37:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 23:37:17,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:37:17,437 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-07-19 23:37:17,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:37:17,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:37:17,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:37:17,439 INFO L85 PathProgramCache]: Analyzing trace with hash 793541372, now seen corresponding path program 1 times [2022-07-19 23:37:17,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:37:17,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518087875] [2022-07-19 23:37:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:37:17,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:37:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:37:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:37:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:37:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:37:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:37:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:37:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:37:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:37:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:37:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:37:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 23:37:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:37:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:37:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:37:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:37:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-19 23:37:17,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:37:17,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518087875] [2022-07-19 23:37:17,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518087875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:37:17,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:37:17,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:37:17,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849451307] [2022-07-19 23:37:17,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:37:17,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:37:17,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:37:17,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:37:17,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:37:17,781 INFO L87 Difference]: Start difference. First operand 2815 states and 4094 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:37:21,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:22,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:37:22,113 INFO L93 Difference]: Finished difference Result 7425 states and 10845 transitions. [2022-07-19 23:37:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 23:37:22,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2022-07-19 23:37:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:37:22,142 INFO L225 Difference]: With dead ends: 7425 [2022-07-19 23:37:22,142 INFO L226 Difference]: Without dead ends: 4634 [2022-07-19 23:37:22,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:37:22,154 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 1923 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 758 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:37:22,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 2386 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 1344 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-07-19 23:37:22,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4634 states. [2022-07-19 23:37:22,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4634 to 4145. [2022-07-19 23:37:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 3305 states have (on average 1.4338880484114978) internal successors, (4739), 3359 states have internal predecessors, (4739), 605 states have call successors, (605), 213 states have call predecessors, (605), 234 states have return successors, (680), 610 states have call predecessors, (680), 604 states have call successors, (680) [2022-07-19 23:37:22,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 6024 transitions. [2022-07-19 23:37:22,351 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 6024 transitions. Word has length 140 [2022-07-19 23:37:22,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:37:22,353 INFO L495 AbstractCegarLoop]: Abstraction has 4145 states and 6024 transitions. [2022-07-19 23:37:22,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:37:22,354 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 6024 transitions. [2022-07-19 23:37:22,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-19 23:37:22,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:37:22,367 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:37:22,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:37:22,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:37:22,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:37:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash -850191257, now seen corresponding path program 1 times [2022-07-19 23:37:22,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:37:22,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93969636] [2022-07-19 23:37:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:37:22,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:37:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:37:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:37:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:37:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:37:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:37:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:37:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:37:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:37:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:37:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:37:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:37:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:37:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 23:37:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:37:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:37:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:37:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:37:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:37:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:37:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-19 23:37:22,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:37:22,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93969636] [2022-07-19 23:37:22,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93969636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:37:22,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:37:22,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:37:22,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910687381] [2022-07-19 23:37:22,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:37:22,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:37:22,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:37:22,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:37:22,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:37:22,665 INFO L87 Difference]: Start difference. First operand 4145 states and 6024 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 23:37:27,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:29,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:31,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:33,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:37:33,597 INFO L93 Difference]: Finished difference Result 10898 states and 15785 transitions. [2022-07-19 23:37:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:37:33,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 169 [2022-07-19 23:37:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:37:33,640 INFO L225 Difference]: With dead ends: 10898 [2022-07-19 23:37:33,640 INFO L226 Difference]: Without dead ends: 6777 [2022-07-19 23:37:33,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:37:33,659 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 1567 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 536 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 3424 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:37:33,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 3424 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 1433 Invalid, 4 Unknown, 0 Unchecked, 10.6s Time] [2022-07-19 23:37:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6777 states. [2022-07-19 23:37:33,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6777 to 6142. [2022-07-19 23:37:33,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6142 states, 4931 states have (on average 1.4232407219630907) internal successors, (7018), 5015 states have internal predecessors, (7018), 840 states have call successors, (840), 335 states have call predecessors, (840), 370 states have return successors, (961), 851 states have call predecessors, (961), 839 states have call successors, (961) [2022-07-19 23:37:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8819 transitions. [2022-07-19 23:37:33,955 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8819 transitions. Word has length 169 [2022-07-19 23:37:33,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:37:33,956 INFO L495 AbstractCegarLoop]: Abstraction has 6142 states and 8819 transitions. [2022-07-19 23:37:33,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 23:37:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8819 transitions. [2022-07-19 23:37:33,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 23:37:33,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:37:33,968 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:37:33,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:37:33,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:37:33,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:37:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1242981819, now seen corresponding path program 1 times [2022-07-19 23:37:33,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:37:33,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718464979] [2022-07-19 23:37:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:37:33,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:37:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:37:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:37:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:37:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:37:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:37:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:37:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:37:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:37:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:37:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:37:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:37:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:37:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 23:37:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:37:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:37:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:37:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:37:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-07-19 23:37:34,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:37:34,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718464979] [2022-07-19 23:37:34,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718464979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:37:34,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:37:34,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:37:34,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625864096] [2022-07-19 23:37:34,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:37:34,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:37:34,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:37:34,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:37:34,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:37:34,218 INFO L87 Difference]: Start difference. First operand 6142 states and 8819 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 23:37:38,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:40,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:37:41,123 INFO L93 Difference]: Finished difference Result 15902 states and 22823 transitions. [2022-07-19 23:37:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 23:37:41,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 163 [2022-07-19 23:37:41,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:37:41,186 INFO L225 Difference]: With dead ends: 15902 [2022-07-19 23:37:41,186 INFO L226 Difference]: Without dead ends: 9795 [2022-07-19 23:37:41,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:37:41,206 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 2814 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 1113 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2886 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1113 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:37:41,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2886 Valid, 2416 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1113 Valid, 1450 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-07-19 23:37:41,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9795 states. [2022-07-19 23:37:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9795 to 8838. [2022-07-19 23:37:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8838 states, 7083 states have (on average 1.4126782436820555) internal successors, (10006), 7203 states have internal predecessors, (10006), 1172 states have call successors, (1172), 525 states have call predecessors, (1172), 582 states have return successors, (1344), 1189 states have call predecessors, (1344), 1171 states have call successors, (1344) [2022-07-19 23:37:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8838 states to 8838 states and 12522 transitions. [2022-07-19 23:37:41,604 INFO L78 Accepts]: Start accepts. Automaton has 8838 states and 12522 transitions. Word has length 163 [2022-07-19 23:37:41,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:37:41,606 INFO L495 AbstractCegarLoop]: Abstraction has 8838 states and 12522 transitions. [2022-07-19 23:37:41,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 23:37:41,607 INFO L276 IsEmpty]: Start isEmpty. Operand 8838 states and 12522 transitions. [2022-07-19 23:37:41,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 23:37:41,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:37:41,621 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:37:41,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:37:41,622 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:37:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:37:41,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2102218924, now seen corresponding path program 1 times [2022-07-19 23:37:41,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:37:41,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549736212] [2022-07-19 23:37:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:37:41,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:37:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:37:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:37:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:37:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:37:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:37:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:37:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:37:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:37:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:37:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:37:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:37:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:37:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 23:37:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:37:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:37:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:37:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:37:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-19 23:37:41,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:37:41,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549736212] [2022-07-19 23:37:41,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549736212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:37:41,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:37:41,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:37:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165989520] [2022-07-19 23:37:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:37:41,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:37:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:37:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:37:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:37:41,895 INFO L87 Difference]: Start difference. First operand 8838 states and 12522 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:37:46,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:48,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:37:48,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:37:48,309 INFO L93 Difference]: Finished difference Result 14382 states and 20599 transitions. [2022-07-19 23:37:48,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:37:48,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 168 [2022-07-19 23:37:48,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:37:48,350 INFO L225 Difference]: With dead ends: 14382 [2022-07-19 23:37:48,350 INFO L226 Difference]: Without dead ends: 9802 [2022-07-19 23:37:48,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:37:48,368 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 659 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 299 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:37:48,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 3210 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1665 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-07-19 23:37:48,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9802 states. [2022-07-19 23:37:48,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9802 to 8858. [2022-07-19 23:37:48,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8858 states, 7103 states have (on average 1.4115162607349008) internal successors, (10026), 7223 states have internal predecessors, (10026), 1172 states have call successors, (1172), 525 states have call predecessors, (1172), 582 states have return successors, (1344), 1189 states have call predecessors, (1344), 1171 states have call successors, (1344) [2022-07-19 23:37:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8858 states to 8858 states and 12542 transitions. [2022-07-19 23:37:48,728 INFO L78 Accepts]: Start accepts. Automaton has 8858 states and 12542 transitions. Word has length 168 [2022-07-19 23:37:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:37:48,729 INFO L495 AbstractCegarLoop]: Abstraction has 8858 states and 12542 transitions. [2022-07-19 23:37:48,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:37:48,729 INFO L276 IsEmpty]: Start isEmpty. Operand 8858 states and 12542 transitions. [2022-07-19 23:37:48,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-19 23:37:48,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:37:48,744 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 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] [2022-07-19 23:37:48,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:37:48,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:37:48,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:37:48,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1844834605, now seen corresponding path program 1 times [2022-07-19 23:37:48,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:37:48,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437758267] [2022-07-19 23:37:48,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:37:48,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:37:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:48,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:37:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:37:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:37:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:37:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:48,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:37:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:37:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:48,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:37:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:37:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:48,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:37:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:37:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:37:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:37:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:49,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 23:37:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:49,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:37:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:49,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:37:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:49,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:37:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:49,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:37:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 23:37:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-19 23:37:49,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:37:49,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437758267] [2022-07-19 23:37:49,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437758267] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:37:49,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716345774] [2022-07-19 23:37:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:37:49,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:37:49,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:37:49,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:37:49,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 23:37:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:37:49,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 23:37:49,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:37:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 89 proven. 5 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-07-19 23:37:49,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:37:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-19 23:37:51,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716345774] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:37:51,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:37:51,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 17 [2022-07-19 23:37:51,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797858732] [2022-07-19 23:37:51,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:37:51,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 23:37:51,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:37:51,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 23:37:51,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-07-19 23:37:51,093 INFO L87 Difference]: Start difference. First operand 8858 states and 12542 transitions. Second operand has 17 states, 16 states have (on average 11.3125) internal successors, (181), 13 states have internal predecessors, (181), 8 states have call successors, (48), 9 states have call predecessors, (48), 6 states have return successors, (38), 7 states have call predecessors, (38), 8 states have call successors, (38) [2022-07-19 23:37:58,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:00,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:03,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:05,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:07,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:07,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:38:07,915 INFO L93 Difference]: Finished difference Result 24105 states and 34353 transitions. [2022-07-19 23:38:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 23:38:07,916 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 11.3125) internal successors, (181), 13 states have internal predecessors, (181), 8 states have call successors, (48), 9 states have call predecessors, (48), 6 states have return successors, (38), 7 states have call predecessors, (38), 8 states have call successors, (38) Word has length 170 [2022-07-19 23:38:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:38:07,973 INFO L225 Difference]: With dead ends: 24105 [2022-07-19 23:38:07,974 INFO L226 Difference]: Without dead ends: 15282 [2022-07-19 23:38:08,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 378 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=407, Invalid=1399, Unknown=0, NotChecked=0, Total=1806 [2022-07-19 23:38:08,001 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 4827 mSDsluCounter, 5483 mSDsCounter, 0 mSdLazyCounter, 6134 mSolverCounterSat, 1885 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4961 SdHoareTripleChecker+Valid, 6517 SdHoareTripleChecker+Invalid, 8024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1885 IncrementalHoareTripleChecker+Valid, 6134 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:38:08,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4961 Valid, 6517 Invalid, 8024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1885 Valid, 6134 Invalid, 5 Unknown, 0 Unchecked, 15.7s Time] [2022-07-19 23:38:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15282 states. [2022-07-19 23:38:08,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15282 to 13435. [2022-07-19 23:38:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13435 states, 10715 states have (on average 1.4011199253383109) internal successors, (15013), 10881 states have internal predecessors, (15013), 1816 states have call successors, (1816), 850 states have call predecessors, (1816), 903 states have return successors, (2023), 1835 states have call predecessors, (2023), 1815 states have call successors, (2023) [2022-07-19 23:38:08,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13435 states to 13435 states and 18852 transitions. [2022-07-19 23:38:08,607 INFO L78 Accepts]: Start accepts. Automaton has 13435 states and 18852 transitions. Word has length 170 [2022-07-19 23:38:08,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:38:08,608 INFO L495 AbstractCegarLoop]: Abstraction has 13435 states and 18852 transitions. [2022-07-19 23:38:08,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 11.3125) internal successors, (181), 13 states have internal predecessors, (181), 8 states have call successors, (48), 9 states have call predecessors, (48), 6 states have return successors, (38), 7 states have call predecessors, (38), 8 states have call successors, (38) [2022-07-19 23:38:08,609 INFO L276 IsEmpty]: Start isEmpty. Operand 13435 states and 18852 transitions. [2022-07-19 23:38:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-19 23:38:08,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:38:08,628 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 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] [2022-07-19 23:38:08,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 23:38:08,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:38:08,844 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:38:08,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:38:08,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1828209139, now seen corresponding path program 1 times [2022-07-19 23:38:08,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:38:08,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583467793] [2022-07-19 23:38:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:38:08,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:38:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:08,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:38:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:08,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:38:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:08,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:38:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:08,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:38:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:08,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:38:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:38:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:38:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:38:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:38:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:38:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:38:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:38:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 23:38:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 23:38:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 23:38:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-19 23:38:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-07-19 23:38:09,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:38:09,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583467793] [2022-07-19 23:38:09,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583467793] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:38:09,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:38:09,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:38:09,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403369433] [2022-07-19 23:38:09,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:38:09,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:38:09,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:38:09,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:38:09,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:38:09,097 INFO L87 Difference]: Start difference. First operand 13435 states and 18852 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:38:13,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:38:14,379 INFO L93 Difference]: Finished difference Result 33436 states and 46809 transitions. [2022-07-19 23:38:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:38:14,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 195 [2022-07-19 23:38:14,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:38:14,500 INFO L225 Difference]: With dead ends: 33436 [2022-07-19 23:38:14,500 INFO L226 Difference]: Without dead ends: 20036 [2022-07-19 23:38:14,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:38:14,536 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 1412 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 447 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 3703 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:38:14,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 3703 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 1882 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-07-19 23:38:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20036 states. [2022-07-19 23:38:15,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20036 to 13459. [2022-07-19 23:38:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13459 states, 10739 states have (on average 1.400223484495763) internal successors, (15037), 10905 states have internal predecessors, (15037), 1816 states have call successors, (1816), 850 states have call predecessors, (1816), 903 states have return successors, (2023), 1835 states have call predecessors, (2023), 1815 states have call successors, (2023) [2022-07-19 23:38:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13459 states to 13459 states and 18876 transitions. [2022-07-19 23:38:15,334 INFO L78 Accepts]: Start accepts. Automaton has 13459 states and 18876 transitions. Word has length 195 [2022-07-19 23:38:15,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:38:15,335 INFO L495 AbstractCegarLoop]: Abstraction has 13459 states and 18876 transitions. [2022-07-19 23:38:15,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:38:15,335 INFO L276 IsEmpty]: Start isEmpty. Operand 13459 states and 18876 transitions. [2022-07-19 23:38:15,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-19 23:38:15,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:38:15,353 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 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] [2022-07-19 23:38:15,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 23:38:15,353 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:38:15,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:38:15,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1124632277, now seen corresponding path program 1 times [2022-07-19 23:38:15,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:38:15,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413135390] [2022-07-19 23:38:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:38:15,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:38:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:38:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:38:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:38:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:38:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:38:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:38:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:38:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:38:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:38:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:38:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:38:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:38:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:38:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:38:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:38:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 23:38:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-19 23:38:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-07-19 23:38:15,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:38:15,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413135390] [2022-07-19 23:38:15,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413135390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:38:15,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:38:15,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:38:15,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997954952] [2022-07-19 23:38:15,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:38:15,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:38:15,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:38:15,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:38:15,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:38:15,642 INFO L87 Difference]: Start difference. First operand 13459 states and 18876 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:38:20,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:22,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:24,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:24,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:38:24,643 INFO L93 Difference]: Finished difference Result 28371 states and 39874 transitions. [2022-07-19 23:38:24,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:38:24,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 206 [2022-07-19 23:38:24,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:38:24,702 INFO L225 Difference]: With dead ends: 28371 [2022-07-19 23:38:24,703 INFO L226 Difference]: Without dead ends: 14947 [2022-07-19 23:38:24,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:38:24,732 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 394 mSDsluCounter, 2934 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 147 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:38:24,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 3880 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2326 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2022-07-19 23:38:24,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14947 states. [2022-07-19 23:38:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14947 to 13507. [2022-07-19 23:38:25,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13507 states, 10775 states have (on average 1.3988863109048724) internal successors, (15073), 10941 states have internal predecessors, (15073), 1816 states have call successors, (1816), 850 states have call predecessors, (1816), 915 states have return successors, (2038), 1847 states have call predecessors, (2038), 1815 states have call successors, (2038) [2022-07-19 23:38:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13507 states to 13507 states and 18927 transitions. [2022-07-19 23:38:25,371 INFO L78 Accepts]: Start accepts. Automaton has 13507 states and 18927 transitions. Word has length 206 [2022-07-19 23:38:25,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:38:25,372 INFO L495 AbstractCegarLoop]: Abstraction has 13507 states and 18927 transitions. [2022-07-19 23:38:25,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:38:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand 13507 states and 18927 transitions. [2022-07-19 23:38:25,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-19 23:38:25,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:38:25,391 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 4, 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] [2022-07-19 23:38:25,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 23:38:25,392 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:38:25,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:38:25,392 INFO L85 PathProgramCache]: Analyzing trace with hash -928227653, now seen corresponding path program 1 times [2022-07-19 23:38:25,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:38:25,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678035433] [2022-07-19 23:38:25,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:38:25,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:38:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:38:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:38:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:38:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:38:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:38:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:38:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:38:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:38:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:38:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:38:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:38:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:38:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:38:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:38:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:38:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 23:38:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:38:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-19 23:38:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-07-19 23:38:25,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:38:25,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678035433] [2022-07-19 23:38:25,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678035433] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:38:25,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296642734] [2022-07-19 23:38:25,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:38:25,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:38:25,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:38:25,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:38:25,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 23:38:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:26,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:38:26,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:38:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-19 23:38:26,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:38:26,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296642734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:38:26,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:38:26,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-07-19 23:38:26,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094132187] [2022-07-19 23:38:26,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:38:26,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:38:26,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:38:26,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:38:26,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:38:26,170 INFO L87 Difference]: Start difference. First operand 13507 states and 18927 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-19 23:38:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:38:27,021 INFO L93 Difference]: Finished difference Result 33048 states and 46290 transitions. [2022-07-19 23:38:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:38:27,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 213 [2022-07-19 23:38:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:38:27,091 INFO L225 Difference]: With dead ends: 33048 [2022-07-19 23:38:27,091 INFO L226 Difference]: Without dead ends: 19576 [2022-07-19 23:38:27,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-19 23:38:27,120 INFO L413 NwaCegarLoop]: 1898 mSDtfsCounter, 1323 mSDsluCounter, 4221 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 6119 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:38:27,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 6119 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 23:38:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19576 states. [2022-07-19 23:38:27,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19576 to 13519. [2022-07-19 23:38:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13519 states, 10787 states have (on average 1.3984425697598961) internal successors, (15085), 10941 states have internal predecessors, (15085), 1816 states have call successors, (1816), 850 states have call predecessors, (1816), 915 states have return successors, (2038), 1847 states have call predecessors, (2038), 1815 states have call successors, (2038) [2022-07-19 23:38:27,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13519 states to 13519 states and 18939 transitions. [2022-07-19 23:38:27,816 INFO L78 Accepts]: Start accepts. Automaton has 13519 states and 18939 transitions. Word has length 213 [2022-07-19 23:38:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:38:27,817 INFO L495 AbstractCegarLoop]: Abstraction has 13519 states and 18939 transitions. [2022-07-19 23:38:27,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-19 23:38:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 13519 states and 18939 transitions. [2022-07-19 23:38:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-07-19 23:38:27,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:38:27,835 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:38:27,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 23:38:28,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 23:38:28,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:38:28,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:38:28,048 INFO L85 PathProgramCache]: Analyzing trace with hash -486438682, now seen corresponding path program 1 times [2022-07-19 23:38:28,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:38:28,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128466673] [2022-07-19 23:38:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:38:28,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:38:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:38:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:38:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:38:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:38:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:38:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:38:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:38:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:38:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:38:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:38:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:38:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:38:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:38:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 23:38:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:38:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 23:38:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 23:38:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 23:38:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 23:38:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-19 23:38:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 23:38:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-19 23:38:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:38:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-19 23:38:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-07-19 23:38:28,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:38:28,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128466673] [2022-07-19 23:38:28,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128466673] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:38:28,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211002925] [2022-07-19 23:38:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:38:28,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:38:28,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:38:28,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:38:28,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 23:38:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:29,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 2176 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:38:29,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:38:29,404 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-19 23:38:29,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:38:29,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211002925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:38:29,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:38:29,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2022-07-19 23:38:29,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162713372] [2022-07-19 23:38:29,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:38:29,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:38:29,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:38:29,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:38:29,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:38:29,406 INFO L87 Difference]: Start difference. First operand 13519 states and 18939 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-19 23:38:30,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:38:30,290 INFO L93 Difference]: Finished difference Result 18303 states and 25413 transitions. [2022-07-19 23:38:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:38:30,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 251 [2022-07-19 23:38:30,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:38:30,358 INFO L225 Difference]: With dead ends: 18303 [2022-07-19 23:38:30,358 INFO L226 Difference]: Without dead ends: 18294 [2022-07-19 23:38:30,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:38:30,370 INFO L413 NwaCegarLoop]: 1732 mSDtfsCounter, 1622 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:38:30,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 2318 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 23:38:30,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18294 states. [2022-07-19 23:38:31,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18294 to 16793. [2022-07-19 23:38:31,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16793 states, 13347 states have (on average 1.386603731175545) internal successors, (18507), 13535 states have internal predecessors, (18507), 2278 states have call successors, (2278), 1080 states have call predecessors, (2278), 1167 states have return successors, (2584), 2321 states have call predecessors, (2584), 2277 states have call successors, (2584) [2022-07-19 23:38:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16793 states to 16793 states and 23369 transitions. [2022-07-19 23:38:31,224 INFO L78 Accepts]: Start accepts. Automaton has 16793 states and 23369 transitions. Word has length 251 [2022-07-19 23:38:31,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:38:31,225 INFO L495 AbstractCegarLoop]: Abstraction has 16793 states and 23369 transitions. [2022-07-19 23:38:31,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-19 23:38:31,225 INFO L276 IsEmpty]: Start isEmpty. Operand 16793 states and 23369 transitions. [2022-07-19 23:38:31,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-19 23:38:31,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:38:31,241 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:38:31,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 23:38:31,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:38:31,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:38:31,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:38:31,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1296230958, now seen corresponding path program 1 times [2022-07-19 23:38:31,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:38:31,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269015439] [2022-07-19 23:38:31,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:38:31,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:38:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:38:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:38:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:38:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:38:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:38:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:38:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:38:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:38:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:38:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:38:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:38:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:38:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:38:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 23:38:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:38:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 23:38:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 23:38:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 23:38:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 23:38:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-19 23:38:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 23:38:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-19 23:38:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:38:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-19 23:38:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-07-19 23:38:31,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:38:31,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269015439] [2022-07-19 23:38:31,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269015439] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:38:31,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:38:31,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:38:31,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361299797] [2022-07-19 23:38:31,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:38:31,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:38:31,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:38:31,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:38:31,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:38:31,851 INFO L87 Difference]: Start difference. First operand 16793 states and 23369 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-19 23:38:34,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:36,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:38:37,521 INFO L93 Difference]: Finished difference Result 25950 states and 36184 transitions. [2022-07-19 23:38:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:38:37,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 255 [2022-07-19 23:38:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:38:37,556 INFO L225 Difference]: With dead ends: 25950 [2022-07-19 23:38:37,557 INFO L226 Difference]: Without dead ends: 8033 [2022-07-19 23:38:37,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:38:37,601 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 1472 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 457 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:38:37,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 1940 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 568 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2022-07-19 23:38:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8033 states. [2022-07-19 23:38:38,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8033 to 7346. [2022-07-19 23:38:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7346 states, 5820 states have (on average 1.3752577319587629) internal successors, (8004), 5903 states have internal predecessors, (8004), 999 states have call successors, (999), 486 states have call predecessors, (999), 526 states have return successors, (1142), 1022 states have call predecessors, (1142), 998 states have call successors, (1142) [2022-07-19 23:38:38,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 10145 transitions. [2022-07-19 23:38:38,142 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 10145 transitions. Word has length 255 [2022-07-19 23:38:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:38:38,144 INFO L495 AbstractCegarLoop]: Abstraction has 7346 states and 10145 transitions. [2022-07-19 23:38:38,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-19 23:38:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 10145 transitions. [2022-07-19 23:38:38,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-07-19 23:38:38,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:38:38,153 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:38:38,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 23:38:38,154 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:38:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:38:38,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1689020113, now seen corresponding path program 1 times [2022-07-19 23:38:38,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:38:38,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910858383] [2022-07-19 23:38:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:38:38,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:38:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:38:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:38:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:38:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:38:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:38:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:38:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:38:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:38:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:38:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:38:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:38:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:38:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:38:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 23:38:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:38:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 23:38:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 23:38:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 23:38:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 23:38:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-19 23:38:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 23:38:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-19 23:38:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:38:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-19 23:38:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-19 23:38:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-07-19 23:38:38,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:38:38,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910858383] [2022-07-19 23:38:38,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910858383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:38:38,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:38:38,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 23:38:38,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315055468] [2022-07-19 23:38:38,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:38:38,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 23:38:38,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:38:38,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 23:38:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:38:38,631 INFO L87 Difference]: Start difference. First operand 7346 states and 10145 transitions. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-19 23:38:43,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:45,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:47,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:49,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:38:50,660 INFO L93 Difference]: Finished difference Result 17482 states and 24607 transitions. [2022-07-19 23:38:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 23:38:50,661 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 268 [2022-07-19 23:38:50,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:38:50,696 INFO L225 Difference]: With dead ends: 17482 [2022-07-19 23:38:50,696 INFO L226 Difference]: Without dead ends: 10217 [2022-07-19 23:38:50,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-19 23:38:50,712 INFO L413 NwaCegarLoop]: 1203 mSDtfsCounter, 1812 mSDsluCounter, 6300 mSDsCounter, 0 mSdLazyCounter, 4590 mSolverCounterSat, 372 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 7503 SdHoareTripleChecker+Invalid, 4966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 4590 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:38:50,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 7503 Invalid, 4966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 4590 Invalid, 4 Unknown, 0 Unchecked, 11.4s Time] [2022-07-19 23:38:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10217 states. [2022-07-19 23:38:51,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10217 to 7416. [2022-07-19 23:38:51,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7416 states, 5880 states have (on average 1.3714285714285714) internal successors, (8064), 5963 states have internal predecessors, (8064), 999 states have call successors, (999), 486 states have call predecessors, (999), 536 states have return successors, (1152), 1032 states have call predecessors, (1152), 998 states have call successors, (1152) [2022-07-19 23:38:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7416 states to 7416 states and 10215 transitions. [2022-07-19 23:38:51,170 INFO L78 Accepts]: Start accepts. Automaton has 7416 states and 10215 transitions. Word has length 268 [2022-07-19 23:38:51,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:38:51,171 INFO L495 AbstractCegarLoop]: Abstraction has 7416 states and 10215 transitions. [2022-07-19 23:38:51,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-19 23:38:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 7416 states and 10215 transitions. [2022-07-19 23:38:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-19 23:38:51,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:38:51,184 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:38:51,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 23:38:51,185 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:38:51,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:38:51,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1797631130, now seen corresponding path program 1 times [2022-07-19 23:38:51,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:38:51,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657744549] [2022-07-19 23:38:51,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:38:51,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:38:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:38:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:38:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:38:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:38:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:38:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:38:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:38:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:38:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:38:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:38:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:38:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:38:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:38:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:38:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 23:38:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:38:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:38:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:38:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:38:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 23:38:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 23:38:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-19 23:38:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-19 23:38:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:38:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-19 23:38:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-19 23:38:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2022-07-19 23:38:51,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:38:51,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657744549] [2022-07-19 23:38:51,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657744549] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:38:51,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9897183] [2022-07-19 23:38:51,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:38:51,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:38:51,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:38:51,684 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:38:51,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 23:38:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:52,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 2286 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 23:38:52,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:38:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-19 23:38:52,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:38:52,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9897183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:38:52,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:38:52,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-19 23:38:52,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622110444] [2022-07-19 23:38:52,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:38:52,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:38:52,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:38:52,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:38:52,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-19 23:38:52,387 INFO L87 Difference]: Start difference. First operand 7416 states and 10215 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-19 23:38:52,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:38:52,875 INFO L93 Difference]: Finished difference Result 14801 states and 20390 transitions. [2022-07-19 23:38:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:38:52,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 274 [2022-07-19 23:38:52,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:38:52,897 INFO L225 Difference]: With dead ends: 14801 [2022-07-19 23:38:52,897 INFO L226 Difference]: Without dead ends: 7415 [2022-07-19 23:38:52,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-07-19 23:38:52,918 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 6 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4099 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:38:52,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4099 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:38:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7415 states. [2022-07-19 23:38:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7415 to 7415. [2022-07-19 23:38:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7415 states, 5879 states have (on average 1.3711515563871406) internal successors, (8061), 5962 states have internal predecessors, (8061), 999 states have call successors, (999), 486 states have call predecessors, (999), 536 states have return successors, (1152), 1032 states have call predecessors, (1152), 998 states have call successors, (1152) [2022-07-19 23:38:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7415 states to 7415 states and 10212 transitions. [2022-07-19 23:38:53,326 INFO L78 Accepts]: Start accepts. Automaton has 7415 states and 10212 transitions. Word has length 274 [2022-07-19 23:38:53,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:38:53,326 INFO L495 AbstractCegarLoop]: Abstraction has 7415 states and 10212 transitions. [2022-07-19 23:38:53,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-19 23:38:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 7415 states and 10212 transitions. [2022-07-19 23:38:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-19 23:38:53,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:38:53,334 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:38:53,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 23:38:53,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:38:53,548 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:38:53,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:38:53,548 INFO L85 PathProgramCache]: Analyzing trace with hash 925220568, now seen corresponding path program 1 times [2022-07-19 23:38:53,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:38:53,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938793243] [2022-07-19 23:38:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:38:53,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:38:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:38:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:38:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:38:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:38:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:38:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:38:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:38:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:38:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:38:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:38:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:38:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:38:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:38:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:38:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 23:38:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:38:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:38:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:38:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:38:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 23:38:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 23:38:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-19 23:38:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-19 23:38:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:38:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-19 23:38:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:38:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-19 23:38:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2022-07-19 23:38:54,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:38:54,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938793243] [2022-07-19 23:38:54,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938793243] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:38:54,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259909527] [2022-07-19 23:38:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:38:54,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:38:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:38:54,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:38:54,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 23:38:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:38:54,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 2287 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 23:38:54,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:38:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-07-19 23:38:54,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:38:54,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259909527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:38:54,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:38:54,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-19 23:38:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364397098] [2022-07-19 23:38:54,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:38:54,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:38:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:38:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:38:54,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-19 23:38:54,771 INFO L87 Difference]: Start difference. First operand 7415 states and 10212 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-19 23:38:57,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:38:59,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:39:00,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:39:00,132 INFO L93 Difference]: Finished difference Result 16478 states and 23122 transitions. [2022-07-19 23:39:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:39:00,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 274 [2022-07-19 23:39:00,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:39:00,160 INFO L225 Difference]: With dead ends: 16478 [2022-07-19 23:39:00,161 INFO L226 Difference]: Without dead ends: 9143 [2022-07-19 23:39:00,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-19 23:39:00,183 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 297 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 4650 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:39:00,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 4650 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 491 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-07-19 23:39:00,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9143 states. [2022-07-19 23:39:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9143 to 7745. [2022-07-19 23:39:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7745 states, 6191 states have (on average 1.3824907123243417) internal successors, (8559), 6274 states have internal predecessors, (8559), 1017 states have call successors, (1017), 486 states have call predecessors, (1017), 536 states have return successors, (1170), 1050 states have call predecessors, (1170), 1016 states have call successors, (1170) [2022-07-19 23:39:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 10746 transitions. [2022-07-19 23:39:00,667 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 10746 transitions. Word has length 274 [2022-07-19 23:39:00,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:39:00,667 INFO L495 AbstractCegarLoop]: Abstraction has 7745 states and 10746 transitions. [2022-07-19 23:39:00,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-19 23:39:00,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 10746 transitions. [2022-07-19 23:39:00,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-19 23:39:00,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:39:00,675 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:39:00,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 23:39:00,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-19 23:39:00,892 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:39:00,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:39:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash -132617510, now seen corresponding path program 1 times [2022-07-19 23:39:00,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:39:00,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056585803] [2022-07-19 23:39:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:39:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:39:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:39:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:39:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:39:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:39:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:39:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:39:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:39:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:39:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:39:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:39:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:39:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:39:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:39:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:39:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 23:39:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:39:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:39:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:39:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:39:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 23:39:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 23:39:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-19 23:39:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-19 23:39:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:39:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:39:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-19 23:39:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:39:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-19 23:39:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-07-19 23:39:01,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:39:01,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056585803] [2022-07-19 23:39:01,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056585803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:39:01,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:39:01,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 23:39:01,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433523142] [2022-07-19 23:39:01,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:39:01,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 23:39:01,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:39:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 23:39:01,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:39:01,526 INFO L87 Difference]: Start difference. First operand 7745 states and 10746 transitions. Second operand has 10 states, 10 states have (on average 15.9) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-19 23:39:05,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:39:07,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:39:11,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:39:13,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:39:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:39:13,161 INFO L93 Difference]: Finished difference Result 18286 states and 25832 transitions. [2022-07-19 23:39:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:39:13,162 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 274 [2022-07-19 23:39:13,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:39:13,186 INFO L225 Difference]: With dead ends: 18286 [2022-07-19 23:39:13,186 INFO L226 Difference]: Without dead ends: 10621 [2022-07-19 23:39:13,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:39:13,201 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 1140 mSDsluCounter, 4494 mSDsCounter, 0 mSdLazyCounter, 2937 mSolverCounterSat, 431 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 5786 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 2937 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:39:13,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 5786 Invalid, 3372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 2937 Invalid, 4 Unknown, 0 Unchecked, 11.0s Time] [2022-07-19 23:39:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10621 states. [2022-07-19 23:39:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10621 to 7781. [2022-07-19 23:39:13,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7781 states, 6221 states have (on average 1.3806461983603922) internal successors, (8589), 6304 states have internal predecessors, (8589), 1017 states have call successors, (1017), 486 states have call predecessors, (1017), 542 states have return successors, (1188), 1056 states have call predecessors, (1188), 1016 states have call successors, (1188) [2022-07-19 23:39:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7781 states to 7781 states and 10794 transitions. [2022-07-19 23:39:13,628 INFO L78 Accepts]: Start accepts. Automaton has 7781 states and 10794 transitions. Word has length 274 [2022-07-19 23:39:13,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:39:13,629 INFO L495 AbstractCegarLoop]: Abstraction has 7781 states and 10794 transitions. [2022-07-19 23:39:13,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-19 23:39:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 7781 states and 10794 transitions. [2022-07-19 23:39:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-07-19 23:39:13,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:39:13,635 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:39:13,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 23:39:13,635 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:39:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:39:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash 2052785736, now seen corresponding path program 1 times [2022-07-19 23:39:13,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:39:13,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652048012] [2022-07-19 23:39:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:39:13,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:39:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:13,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:39:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:39:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:39:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:39:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:13,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:39:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:39:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:39:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:13,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:39:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:13,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:39:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:39:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:39:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:39:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:39:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:39:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 23:39:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:39:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:39:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:39:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:39:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 23:39:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 23:39:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-19 23:39:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-19 23:39:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:39:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:39:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-19 23:39:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:39:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-19 23:39:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-07-19 23:39:14,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:39:14,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652048012] [2022-07-19 23:39:14,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652048012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:39:14,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:39:14,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 23:39:14,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216435863] [2022-07-19 23:39:14,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:39:14,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 23:39:14,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:39:14,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 23:39:14,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-19 23:39:14,338 INFO L87 Difference]: Start difference. First operand 7781 states and 10794 transitions. Second operand has 18 states, 17 states have (on average 9.647058823529411) internal successors, (164), 11 states have internal predecessors, (164), 3 states have call successors, (29), 6 states have call predecessors, (29), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-19 23:39:20,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:39:22,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:39:26,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:39:28,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:39:31,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:39:33,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:39:33,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:39:33,137 INFO L93 Difference]: Finished difference Result 22431 states and 32470 transitions. [2022-07-19 23:39:33,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 23:39:33,138 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 9.647058823529411) internal successors, (164), 11 states have internal predecessors, (164), 3 states have call successors, (29), 6 states have call predecessors, (29), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) Word has length 275 [2022-07-19 23:39:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:39:33,175 INFO L225 Difference]: With dead ends: 22431 [2022-07-19 23:39:33,176 INFO L226 Difference]: Without dead ends: 14730 [2022-07-19 23:39:33,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2022-07-19 23:39:33,193 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 2071 mSDsluCounter, 13322 mSDsCounter, 0 mSdLazyCounter, 7950 mSolverCounterSat, 581 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 14863 SdHoareTripleChecker+Invalid, 8537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 7950 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:39:33,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2189 Valid, 14863 Invalid, 8537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 7950 Invalid, 6 Unknown, 0 Unchecked, 17.7s Time] [2022-07-19 23:39:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14730 states. [2022-07-19 23:39:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14730 to 7811. [2022-07-19 23:39:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7811 states, 6245 states have (on average 1.37822257806245) internal successors, (8607), 6328 states have internal predecessors, (8607), 1017 states have call successors, (1017), 486 states have call predecessors, (1017), 548 states have return successors, (1194), 1062 states have call predecessors, (1194), 1016 states have call successors, (1194) [2022-07-19 23:39:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7811 states to 7811 states and 10818 transitions. [2022-07-19 23:39:33,825 INFO L78 Accepts]: Start accepts. Automaton has 7811 states and 10818 transitions. Word has length 275 [2022-07-19 23:39:33,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:39:33,826 INFO L495 AbstractCegarLoop]: Abstraction has 7811 states and 10818 transitions. [2022-07-19 23:39:33,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 9.647058823529411) internal successors, (164), 11 states have internal predecessors, (164), 3 states have call successors, (29), 6 states have call predecessors, (29), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-19 23:39:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7811 states and 10818 transitions. [2022-07-19 23:39:33,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-07-19 23:39:33,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:39:33,834 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:39:33,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 23:39:33,834 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:39:33,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:39:33,835 INFO L85 PathProgramCache]: Analyzing trace with hash -580629637, now seen corresponding path program 1 times [2022-07-19 23:39:33,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:39:33,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508312987] [2022-07-19 23:39:33,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:39:33,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:39:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:39:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:39:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:39:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:39:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:39:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:39:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:39:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:39:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:39:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:39:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:39:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:39:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:39:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:39:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 23:39:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:39:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:39:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:39:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:39:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 23:39:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 23:39:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-19 23:39:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-19 23:39:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:35,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:39:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:36,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:39:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:36,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-19 23:39:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:36,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:39:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:36,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-07-19 23:39:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 27 proven. 37 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-19 23:39:36,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:39:36,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508312987] [2022-07-19 23:39:36,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508312987] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:39:36,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882181875] [2022-07-19 23:39:36,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:39:36,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:39:36,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:39:36,072 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:39:36,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 23:39:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:39:37,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 186 conjunts are in the unsatisfiable core [2022-07-19 23:39:37,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:39:37,829 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-19 23:39:37,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-07-19 23:39:37,985 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 23:39:37,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2022-07-19 23:39:38,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-07-19 23:39:38,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:39:38,425 INFO L356 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-07-19 23:39:38,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 37 [2022-07-19 23:39:40,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:39:40,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:39:40,494 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-07-19 23:39:40,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 54 [2022-07-19 23:39:41,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:39:41,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:39:41,870 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-07-19 23:39:41,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 73 [2022-07-19 23:39:42,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:39:42,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:39:42,532 INFO L356 Elim1Store]: treesize reduction 94, result has 43.0 percent of original size [2022-07-19 23:39:42,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 54 treesize of output 110 [2022-07-19 23:39:42,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:39:42,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:39:42,967 INFO L356 Elim1Store]: treesize reduction 46, result has 51.6 percent of original size [2022-07-19 23:39:42,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 111 [2022-07-19 23:39:43,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:39:43,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:39:43,494 INFO L356 Elim1Store]: treesize reduction 33, result has 47.6 percent of original size [2022-07-19 23:39:43,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 64 [2022-07-19 23:39:43,517 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 23:39:43,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 23:39:44,411 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 23:39:44,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 44 [2022-07-19 23:39:45,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 23:39:45,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-07-19 23:39:45,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 23:39:49,747 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 23:39:49,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 19 [2022-07-19 23:39:49,980 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-19 23:39:49,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-07-19 23:39:50,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-19 23:39:50,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-19 23:39:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-07-19 23:39:50,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:40:18,661 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3584 (Array Int Int)) (|ULTIMATE.start_ppp_async_input_~skb~2#1.offset| Int)) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_ppp_async_input_~ap#1.base| v_ArrVal_3584) |c_ULTIMATE.start_ppp_async_input_~skb~2#1.base|) (+ |ULTIMATE.start_ppp_async_input_~skb~2#1.offset| 104)) 4294967296) 0)) is different from false [2022-07-19 23:40:18,671 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3584 (Array Int Int)) (|ULTIMATE.start_ppp_async_input_~skb~2#1.offset| Int)) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_ppp_async_input_~ap#1.base| v_ArrVal_3584) |c_ULTIMATE.start_ldv_dev_alloc_skb_18_#res#1.base|) (+ |ULTIMATE.start_ppp_async_input_~skb~2#1.offset| 104)) 4294967296) 0)) is different from false [2022-07-19 23:40:18,678 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3584 (Array Int Int)) (|ULTIMATE.start_ppp_async_input_~skb~2#1.offset| Int)) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_ppp_async_input_~ap#1.base| v_ArrVal_3584) |c_ULTIMATE.start_ldv_dev_alloc_skb_18_#t~ret387#1.base|) (+ |ULTIMATE.start_ppp_async_input_~skb~2#1.offset| 104)) 4294967296) 0)) is different from false [2022-07-19 23:40:18,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2022-07-19 23:40:18,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 120 [2022-07-19 23:40:19,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-07-19 23:40:19,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 55 [2022-07-19 23:40:19,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882181875] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:40:19,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 23:40:19,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 41] total 76 [2022-07-19 23:40:19,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200427174] [2022-07-19 23:40:19,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 23:40:19,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-07-19 23:40:19,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:40:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-07-19 23:40:19,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=6640, Unknown=26, NotChecked=498, Total=7482 [2022-07-19 23:40:19,901 INFO L87 Difference]: Start difference. First operand 7811 states and 10818 transitions. Second operand has 76 states, 74 states have (on average 4.405405405405405) internal successors, (326), 63 states have internal predecessors, (326), 23 states have call successors, (57), 11 states have call predecessors, (57), 15 states have return successors, (56), 24 states have call predecessors, (56), 23 states have call successors, (56)