./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_generic.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.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 ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:51:25,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:51:25,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:51:25,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:51:25,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:51:25,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:51:25,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:51:25,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:51:25,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:51:25,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:51:25,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:51:25,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:51:25,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:51:25,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:51:25,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:51:25,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:51:25,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:51:25,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:51:25,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:51:25,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:51:25,861 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:51:25,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:51:25,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:51:25,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:51:25,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:51:25,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:51:25,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:51:25,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:51:25,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:51:25,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:51:25,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:51:25,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:51:25,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:51:25,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:51:25,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:51:25,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:51:25,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:51:25,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:51:25,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:51:25,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:51:25,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:51:25,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:51:25,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:51:25,908 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:51:25,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:51:25,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:51:25,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:51:25,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:51:25,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:51:25,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:51:25,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:51:25,911 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:51:25,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:51:25,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:51:25,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:51:25,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:51:25,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:51:25,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:51:25,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:51:25,913 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:51:25,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:51:25,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:51:25,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:51:25,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:51:25,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:51:25,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:51:25,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:51:25,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:51:25,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:51:25,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:51:25,916 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:51:25,916 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:51:25,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:51:25,916 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 [2022-07-22 23:51:26,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:51:26,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:51:26,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:51:26,166 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:51:26,166 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:51:26,167 INFO L432 ainManager$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_generic.ko-entry_point.cil.out.i [2022-07-22 23:51:26,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb17b856e/49fd0ad31ab34cc98af7146a07bb6baa/FLAG24a40443b [2022-07-22 23:51:26,855 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:51:26,855 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_generic.ko-entry_point.cil.out.i [2022-07-22 23:51:26,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb17b856e/49fd0ad31ab34cc98af7146a07bb6baa/FLAG24a40443b [2022-07-22 23:51:27,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb17b856e/49fd0ad31ab34cc98af7146a07bb6baa [2022-07-22 23:51:27,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:51:27,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:51:27,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:51:27,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:51:27,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:51:27,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:51:27" (1/1) ... [2022-07-22 23:51:27,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ae243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:27, skipping insertion in model container [2022-07-22 23:51:27,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:51:27" (1/1) ... [2022-07-22 23:51:27,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:51:27,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:51:28,660 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_generic.ko-entry_point.cil.out.i[198800,198813] [2022-07-22 23:51:29,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:51:29,518 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:51:29,652 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_generic.ko-entry_point.cil.out.i[198800,198813] [2022-07-22 23:51:29,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:51:29,895 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:51:29,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:29 WrapperNode [2022-07-22 23:51:29,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:51:29,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:51:29,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:51:29,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:51:29,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:29" (1/1) ... [2022-07-22 23:51:29,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:29" (1/1) ... [2022-07-22 23:51:30,155 INFO L137 Inliner]: procedures = 375, calls = 2229, calls flagged for inlining = 193, calls inlined = 191, statements flattened = 6492 [2022-07-22 23:51:30,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:51:30,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:51:30,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:51:30,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:51:30,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:29" (1/1) ... [2022-07-22 23:51:30,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:29" (1/1) ... [2022-07-22 23:51:30,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:29" (1/1) ... [2022-07-22 23:51:30,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:29" (1/1) ... [2022-07-22 23:51:30,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:29" (1/1) ... [2022-07-22 23:51:30,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:29" (1/1) ... [2022-07-22 23:51:30,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:29" (1/1) ... [2022-07-22 23:51:30,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:51:30,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:51:30,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:51:30,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:51:30,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:29" (1/1) ... [2022-07-22 23:51:30,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:51:30,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:51:30,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 23:51:30,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 23:51:30,502 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_destroy [2022-07-22 23:51:30,502 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_destroy [2022-07-22 23:51:30,502 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2022-07-22 23:51:30,502 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2022-07-22 23:51:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-22 23:51:30,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-22 23:51:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2022-07-22 23:51:30,503 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2022-07-22 23:51:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-22 23:51:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2022-07-22 23:51:30,503 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2022-07-22 23:51:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:51:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:51:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-22 23:51:30,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-22 23:51:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-22 23:51:30,503 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-22 23:51:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-22 23:51:30,503 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-22 23:51:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2022-07-22 23:51:30,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2022-07-22 23:51:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2022-07-22 23:51:30,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2022-07-22 23:51:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2022-07-22 23:51:30,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2022-07-22 23:51:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2022-07-22 23:51:30,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2022-07-22 23:51:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-22 23:51:30,504 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-22 23:51:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-22 23:51:30,504 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-22 23:51:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-22 23:51:30,504 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-22 23:51:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:51:30,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:51:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2022-07-22 23:51:30,505 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2022-07-22 23:51:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2022-07-22 23:51:30,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2022-07-22 23:51:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-22 23:51:30,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-22 23:51:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2022-07-22 23:51:30,506 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2022-07-22 23:51:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:51:30,506 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:51:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2022-07-22 23:51:30,506 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2022-07-22 23:51:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:51:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:51:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2022-07-22 23:51:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2022-07-22 23:51:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-22 23:51:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-22 23:51:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 23:51:30,508 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 23:51:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2022-07-22 23:51:30,508 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2022-07-22 23:51:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 23:51:30,509 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 23:51:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-22 23:51:30,509 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-22 23:51:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-22 23:51:30,510 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-22 23:51:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2022-07-22 23:51:30,510 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2022-07-22 23:51:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_19 [2022-07-22 23:51:30,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_19 [2022-07-22 23:51:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2022-07-22 23:51:30,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2022-07-22 23:51:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2022-07-22 23:51:30,511 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2022-07-22 23:51:30,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:51:30,511 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-22 23:51:30,511 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-22 23:51:30,511 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-07-22 23:51:30,512 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-07-22 23:51:30,512 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-07-22 23:51:30,512 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-07-22 23:51:30,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:51:30,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-22 23:51:30,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-22 23:51:30,512 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_get_stats64 [2022-07-22 23:51:30,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_get_stats64 [2022-07-22 23:51:30,512 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-07-22 23:51:30,513 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-07-22 23:51:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-07-22 23:51:30,513 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-07-22 23:51:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2022-07-22 23:51:30,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2022-07-22 23:51:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-22 23:51:30,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-22 23:51:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:51:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:51:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_error [2022-07-22 23:51:30,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_error [2022-07-22 23:51:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2022-07-22 23:51:30,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2022-07-22 23:51:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-22 23:51:30,515 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-22 23:51:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-22 23:51:30,516 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-22 23:51:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_create [2022-07-22 23:51:30,516 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_create [2022-07-22 23:51:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:51:30,516 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:51:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-22 23:51:30,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-22 23:51:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2022-07-22 23:51:30,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2022-07-22 23:51:30,517 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-22 23:51:30,517 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-22 23:51:30,517 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-22 23:51:30,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-22 23:51:30,517 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-22 23:51:30,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-22 23:51:30,517 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2022-07-22 23:51:30,518 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2022-07-22 23:51:30,518 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2022-07-22 23:51:30,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2022-07-22 23:51:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-22 23:51:30,520 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-22 23:51:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-22 23:51:30,520 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-22 23:51:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:51:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-22 23:51:30,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-22 23:51:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-22 23:51:30,522 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-22 23:51:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2022-07-22 23:51:30,525 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2022-07-22 23:51:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-22 23:51:30,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-22 23:51:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2022-07-22 23:51:30,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2022-07-22 23:51:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_net_ioctl [2022-07-22 23:51:30,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_net_ioctl [2022-07-22 23:51:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:51:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2022-07-22 23:51:30,526 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2022-07-22 23:51:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-22 23:51:30,527 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-22 23:51:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:51:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-22 23:51:30,527 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-22 23:51:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-07-22 23:51:30,527 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-07-22 23:51:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2022-07-22 23:51:30,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2022-07-22 23:51:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2022-07-22 23:51:30,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2022-07-22 23:51:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-07-22 23:51:30,528 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-07-22 23:51:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-22 23:51:30,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-22 23:51:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2022-07-22 23:51:30,528 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2022-07-22 23:51:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_do_recv [2022-07-22 23:51:30,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_do_recv [2022-07-22 23:51:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2022-07-22 23:51:30,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2022-07-22 23:51:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2022-07-22 23:51:30,529 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2022-07-22 23:51:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_16 [2022-07-22 23:51:30,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_16 [2022-07-22 23:51:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-07-22 23:51:30,529 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-07-22 23:51:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2022-07-22 23:51:30,529 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2022-07-22 23:51:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2022-07-22 23:51:30,530 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2022-07-22 23:51:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-22 23:51:30,530 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-22 23:51:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:51:30,530 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:51:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2022-07-22 23:51:30,530 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2022-07-22 23:51:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_nonmp_frame [2022-07-22 23:51:30,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_nonmp_frame [2022-07-22 23:51:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2022-07-22 23:51:30,531 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2022-07-22 23:51:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:51:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-22 23:51:30,531 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-22 23:51:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-22 23:51:30,531 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-22 23:51:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-07-22 23:51:30,531 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-07-22 23:51:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_write [2022-07-22 23:51:30,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_write [2022-07-22 23:51:30,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:51:30,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:51:30,532 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2022-07-22 23:51:30,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2022-07-22 23:51:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2022-07-22 23:51:30,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2022-07-22 23:51:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:51:30,534 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-22 23:51:30,534 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-22 23:51:30,534 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-22 23:51:30,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-22 23:51:30,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:51:30,534 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-22 23:51:30,534 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-22 23:51:30,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:51:30,534 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-07-22 23:51:30,534 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-07-22 23:51:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 23:51:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2022-07-22 23:51:30,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2022-07-22 23:51:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:51:30,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:51:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-07-22 23:51:30,535 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-07-22 23:51:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-07-22 23:51:30,535 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-07-22 23:51:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2022-07-22 23:51:30,536 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2022-07-22 23:51:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-07-22 23:51:30,536 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-07-22 23:51:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-22 23:51:30,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-22 23:51:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-22 23:51:30,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-22 23:51:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2022-07-22 23:51:30,536 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2022-07-22 23:51:30,537 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-07-22 23:51:30,537 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-07-22 23:51:30,537 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-22 23:51:30,537 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-22 23:51:30,537 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-22 23:51:30,537 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-22 23:51:30,537 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_net_channel [2022-07-22 23:51:30,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_net_channel [2022-07-22 23:51:30,537 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-22 23:51:30,537 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-22 23:51:30,538 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2022-07-22 23:51:30,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2022-07-22 23:51:30,538 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2022-07-22 23:51:30,538 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2022-07-22 23:51:30,538 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 23:51:30,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 23:51:30,538 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2022-07-22 23:51:30,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2022-07-22 23:51:30,538 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2022-07-22 23:51:30,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2022-07-22 23:51:30,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_44 [2022-07-22 23:51:30,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_44 [2022-07-22 23:51:30,542 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_poll [2022-07-22 23:51:30,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_poll [2022-07-22 23:51:30,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:51:30,542 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2022-07-22 23:51:30,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2022-07-22 23:51:30,542 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-22 23:51:30,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-22 23:51:30,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:51:30,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:51:30,544 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-22 23:51:30,544 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-22 23:51:30,544 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-22 23:51:30,544 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-22 23:51:31,181 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:51:31,183 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:51:31,600 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-22 23:51:34,246 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:51:34,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:51:34,259 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 23:51:34,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:51:34 BoogieIcfgContainer [2022-07-22 23:51:34,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:51:34,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:51:34,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:51:34,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:51:34,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:51:27" (1/3) ... [2022-07-22 23:51:34,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f40523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:51:34, skipping insertion in model container [2022-07-22 23:51:34,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:29" (2/3) ... [2022-07-22 23:51:34,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f40523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:51:34, skipping insertion in model container [2022-07-22 23:51:34,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:51:34" (3/3) ... [2022-07-22 23:51:34,267 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2022-07-22 23:51:34,276 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:51:34,276 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:51:34,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:51:34,374 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@d074c1e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4c6ff7a [2022-07-22 23:51:34,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:51:34,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 2188 states, 1551 states have (on average 1.3836234687298516) internal successors, (2146), 1610 states have internal predecessors, (2146), 515 states have call successors, (515), 121 states have call predecessors, (515), 120 states have return successors, (510), 497 states have call predecessors, (510), 510 states have call successors, (510) [2022-07-22 23:51:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 23:51:34,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:34,395 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:51:34,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:34,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1665950622, now seen corresponding path program 1 times [2022-07-22 23:51:34,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:34,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478400886] [2022-07-22 23:51:34,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:34,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:34,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:34,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:34,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:51:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:34,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:51:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:34,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:51:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:51:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:51:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:34,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:51:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 23:51:34,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:34,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478400886] [2022-07-22 23:51:34,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478400886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:34,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:34,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:51:34,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699428806] [2022-07-22 23:51:34,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:34,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:51:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:34,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:51:34,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:51:34,947 INFO L87 Difference]: Start difference. First operand has 2188 states, 1551 states have (on average 1.3836234687298516) internal successors, (2146), 1610 states have internal predecessors, (2146), 515 states have call successors, (515), 121 states have call predecessors, (515), 120 states have return successors, (510), 497 states have call predecessors, (510), 510 states have call successors, (510) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 23:51:42,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:42,877 INFO L93 Difference]: Finished difference Result 7161 states and 11104 transitions. [2022-07-22 23:51:42,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:51:42,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2022-07-22 23:51:42,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:42,928 INFO L225 Difference]: With dead ends: 7161 [2022-07-22 23:51:42,928 INFO L226 Difference]: Without dead ends: 4931 [2022-07-22 23:51:42,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:51:42,949 INFO L413 NwaCegarLoop]: 3768 mSDtfsCounter, 4559 mSDsluCounter, 9077 mSDsCounter, 0 mSdLazyCounter, 6021 mSolverCounterSat, 1591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4932 SdHoareTripleChecker+Valid, 12845 SdHoareTripleChecker+Invalid, 7612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1591 IncrementalHoareTripleChecker+Valid, 6021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:42,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4932 Valid, 12845 Invalid, 7612 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1591 Valid, 6021 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-07-22 23:51:42,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2022-07-22 23:51:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4433. [2022-07-22 23:51:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4433 states, 3151 states have (on average 1.365915582354808) internal successors, (4304), 3264 states have internal predecessors, (4304), 1025 states have call successors, (1025), 239 states have call predecessors, (1025), 256 states have return successors, (1194), 1010 states have call predecessors, (1194), 1024 states have call successors, (1194) [2022-07-22 23:51:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4433 states to 4433 states and 6523 transitions. [2022-07-22 23:51:43,172 INFO L78 Accepts]: Start accepts. Automaton has 4433 states and 6523 transitions. Word has length 69 [2022-07-22 23:51:43,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:43,173 INFO L495 AbstractCegarLoop]: Abstraction has 4433 states and 6523 transitions. [2022-07-22 23:51:43,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 23:51:43,174 INFO L276 IsEmpty]: Start isEmpty. Operand 4433 states and 6523 transitions. [2022-07-22 23:51:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 23:51:43,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:43,182 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-07-22 23:51:43,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:51:43,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:43,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:43,196 INFO L85 PathProgramCache]: Analyzing trace with hash 953309695, now seen corresponding path program 1 times [2022-07-22 23:51:43,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:43,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809537414] [2022-07-22 23:51:43,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:43,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:51:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:51:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:51:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:51:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:51:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:51:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 23:51:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:51:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 23:51:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 23:51:43,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:43,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809537414] [2022-07-22 23:51:43,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809537414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:43,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:43,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:51:43,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150793390] [2022-07-22 23:51:43,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:43,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:51:43,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:43,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:51:43,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:51:43,514 INFO L87 Difference]: Start difference. First operand 4433 states and 6523 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:51:53,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:53,740 INFO L93 Difference]: Finished difference Result 14739 states and 22490 transitions. [2022-07-22 23:51:53,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:51:53,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-07-22 23:51:53,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:53,824 INFO L225 Difference]: With dead ends: 14739 [2022-07-22 23:51:53,824 INFO L226 Difference]: Without dead ends: 10326 [2022-07-22 23:51:53,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:51:53,847 INFO L413 NwaCegarLoop]: 3710 mSDtfsCounter, 6659 mSDsluCounter, 5015 mSDsCounter, 0 mSdLazyCounter, 5098 mSolverCounterSat, 3349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6994 SdHoareTripleChecker+Valid, 8725 SdHoareTripleChecker+Invalid, 8447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3349 IncrementalHoareTripleChecker+Valid, 5098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:53,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6994 Valid, 8725 Invalid, 8447 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3349 Valid, 5098 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-07-22 23:51:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10326 states. [2022-07-22 23:51:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10326 to 8839. [2022-07-22 23:51:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8839 states, 6245 states have (on average 1.355004003202562) internal successors, (8462), 6489 states have internal predecessors, (8462), 2045 states have call successors, (2045), 467 states have call predecessors, (2045), 548 states have return successors, (2783), 2053 states have call predecessors, (2783), 2044 states have call successors, (2783) [2022-07-22 23:51:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8839 states to 8839 states and 13290 transitions. [2022-07-22 23:51:54,301 INFO L78 Accepts]: Start accepts. Automaton has 8839 states and 13290 transitions. Word has length 105 [2022-07-22 23:51:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:54,303 INFO L495 AbstractCegarLoop]: Abstraction has 8839 states and 13290 transitions. [2022-07-22 23:51:54,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:51:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 8839 states and 13290 transitions. [2022-07-22 23:51:54,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 23:51:54,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:54,310 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-07-22 23:51:54,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:51:54,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:54,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1261801524, now seen corresponding path program 1 times [2022-07-22 23:51:54,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:54,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603800944] [2022-07-22 23:51:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:54,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:51:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:51:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:51:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:51:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:51:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:51:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 23:51:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-22 23:51:54,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:54,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603800944] [2022-07-22 23:51:54,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603800944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:54,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:54,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:51:54,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378733828] [2022-07-22 23:51:54,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:54,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:51:54,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:54,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:51:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:51:54,596 INFO L87 Difference]: Start difference. First operand 8839 states and 13290 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:52:04,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:52:04,631 INFO L93 Difference]: Finished difference Result 26650 states and 40851 transitions. [2022-07-22 23:52:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:52:04,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-07-22 23:52:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:52:04,882 INFO L225 Difference]: With dead ends: 26650 [2022-07-22 23:52:04,882 INFO L226 Difference]: Without dead ends: 17831 [2022-07-22 23:52:04,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:52:04,924 INFO L413 NwaCegarLoop]: 4684 mSDtfsCounter, 4231 mSDsluCounter, 5948 mSDsCounter, 0 mSdLazyCounter, 4968 mSolverCounterSat, 2067 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4528 SdHoareTripleChecker+Valid, 10632 SdHoareTripleChecker+Invalid, 7035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2067 IncrementalHoareTripleChecker+Valid, 4968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:52:04,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4528 Valid, 10632 Invalid, 7035 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2067 Valid, 4968 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-07-22 23:52:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17831 states. [2022-07-22 23:52:05,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17831 to 14968. [2022-07-22 23:52:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14968 states, 10597 states have (on average 1.3512314806077192) internal successors, (14319), 11047 states have internal predecessors, (14319), 3359 states have call successors, (3359), 865 states have call predecessors, (3359), 1011 states have return successors, (4661), 3369 states have call predecessors, (4661), 3358 states have call successors, (4661) [2022-07-22 23:52:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14968 states to 14968 states and 22339 transitions. [2022-07-22 23:52:05,714 INFO L78 Accepts]: Start accepts. Automaton has 14968 states and 22339 transitions. Word has length 108 [2022-07-22 23:52:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:52:05,714 INFO L495 AbstractCegarLoop]: Abstraction has 14968 states and 22339 transitions. [2022-07-22 23:52:05,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:52:05,715 INFO L276 IsEmpty]: Start isEmpty. Operand 14968 states and 22339 transitions. [2022-07-22 23:52:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 23:52:05,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:52:05,728 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:52:05,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:52:05,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:52:05,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:52:05,729 INFO L85 PathProgramCache]: Analyzing trace with hash -599238503, now seen corresponding path program 1 times [2022-07-22 23:52:05,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:52:05,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816808845] [2022-07-22 23:52:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:52:05,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:52:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:05,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:05,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:52:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:05,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:52:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:52:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:52:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:05,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:52:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:05,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:52:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:05,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:52:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:05,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:52:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:05,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 23:52:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:52:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:06,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:06,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-07-22 23:52:06,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:52:06,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816808845] [2022-07-22 23:52:06,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816808845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:52:06,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:52:06,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:52:06,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289963078] [2022-07-22 23:52:06,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:52:06,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:52:06,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:52:06,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:52:06,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:52:06,043 INFO L87 Difference]: Start difference. First operand 14968 states and 22339 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 23:52:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:52:13,498 INFO L93 Difference]: Finished difference Result 32759 states and 49872 transitions. [2022-07-22 23:52:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:52:13,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2022-07-22 23:52:13,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:52:13,580 INFO L225 Difference]: With dead ends: 32759 [2022-07-22 23:52:13,580 INFO L226 Difference]: Without dead ends: 17811 [2022-07-22 23:52:13,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:52:13,628 INFO L413 NwaCegarLoop]: 2938 mSDtfsCounter, 3942 mSDsluCounter, 3653 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 1101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 6591 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1101 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:52:13,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 6591 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1101 Valid, 3184 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-22 23:52:13,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17811 states. [2022-07-22 23:52:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17811 to 14968. [2022-07-22 23:52:14,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14968 states, 10597 states have (on average 1.3504765499669718) internal successors, (14311), 11047 states have internal predecessors, (14311), 3359 states have call successors, (3359), 865 states have call predecessors, (3359), 1011 states have return successors, (4661), 3369 states have call predecessors, (4661), 3358 states have call successors, (4661) [2022-07-22 23:52:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14968 states to 14968 states and 22331 transitions. [2022-07-22 23:52:14,375 INFO L78 Accepts]: Start accepts. Automaton has 14968 states and 22331 transitions. Word has length 142 [2022-07-22 23:52:14,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:52:14,376 INFO L495 AbstractCegarLoop]: Abstraction has 14968 states and 22331 transitions. [2022-07-22 23:52:14,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 23:52:14,376 INFO L276 IsEmpty]: Start isEmpty. Operand 14968 states and 22331 transitions. [2022-07-22 23:52:14,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-22 23:52:14,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:52:14,382 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:52:14,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:52:14,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:52:14,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:52:14,383 INFO L85 PathProgramCache]: Analyzing trace with hash -410587588, now seen corresponding path program 1 times [2022-07-22 23:52:14,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:52:14,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207334683] [2022-07-22 23:52:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:52:14,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:52:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:52:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:52:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:52:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:52:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:52:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:52:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:52:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:52:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 23:52:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 23:52:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 23:52:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-22 23:52:14,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:52:14,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207334683] [2022-07-22 23:52:14,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207334683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:52:14,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:52:14,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:52:14,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326426910] [2022-07-22 23:52:14,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:52:14,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:52:14,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:52:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:52:14,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:52:14,647 INFO L87 Difference]: Start difference. First operand 14968 states and 22331 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 23:52:23,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:52:23,715 INFO L93 Difference]: Finished difference Result 40582 states and 61940 transitions. [2022-07-22 23:52:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:52:23,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2022-07-22 23:52:23,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:52:23,851 INFO L225 Difference]: With dead ends: 40582 [2022-07-22 23:52:23,852 INFO L226 Difference]: Without dead ends: 25634 [2022-07-22 23:52:23,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:52:23,905 INFO L413 NwaCegarLoop]: 4013 mSDtfsCounter, 5170 mSDsluCounter, 3747 mSDsCounter, 0 mSdLazyCounter, 3188 mSolverCounterSat, 2482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5469 SdHoareTripleChecker+Valid, 7760 SdHoareTripleChecker+Invalid, 5670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2482 IncrementalHoareTripleChecker+Valid, 3188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:52:23,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5469 Valid, 7760 Invalid, 5670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2482 Valid, 3188 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-22 23:52:23,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25634 states. [2022-07-22 23:52:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25634 to 21365. [2022-07-22 23:52:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21365 states, 15153 states have (on average 1.348115884643305) internal successors, (20428), 15817 states have internal predecessors, (20428), 4721 states have call successors, (4721), 1275 states have call predecessors, (4721), 1490 states have return successors, (6617), 4733 states have call predecessors, (6617), 4720 states have call successors, (6617) [2022-07-22 23:52:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21365 states to 21365 states and 31766 transitions. [2022-07-22 23:52:24,795 INFO L78 Accepts]: Start accepts. Automaton has 21365 states and 31766 transitions. Word has length 149 [2022-07-22 23:52:24,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:52:24,797 INFO L495 AbstractCegarLoop]: Abstraction has 21365 states and 31766 transitions. [2022-07-22 23:52:24,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 23:52:24,797 INFO L276 IsEmpty]: Start isEmpty. Operand 21365 states and 31766 transitions. [2022-07-22 23:52:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-22 23:52:24,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:52:24,801 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:52:24,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:52:24,802 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:52:24,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:52:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash -43905274, now seen corresponding path program 1 times [2022-07-22 23:52:24,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:52:24,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747970299] [2022-07-22 23:52:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:52:24,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:52:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:52:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:52:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:52:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:52:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:52:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:52:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:52:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:52:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 23:52:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 23:52:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 23:52:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-22 23:52:25,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:52:25,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747970299] [2022-07-22 23:52:25,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747970299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:52:25,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:52:25,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 23:52:25,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973928710] [2022-07-22 23:52:25,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:52:25,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 23:52:25,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:52:25,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 23:52:25,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:52:25,309 INFO L87 Difference]: Start difference. First operand 21365 states and 31766 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-22 23:52:38,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:52:38,774 INFO L93 Difference]: Finished difference Result 47091 states and 73359 transitions. [2022-07-22 23:52:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 23:52:38,776 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16) Word has length 149 [2022-07-22 23:52:38,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:52:38,902 INFO L225 Difference]: With dead ends: 47091 [2022-07-22 23:52:38,902 INFO L226 Difference]: Without dead ends: 25746 [2022-07-22 23:52:38,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-07-22 23:52:38,972 INFO L413 NwaCegarLoop]: 3001 mSDtfsCounter, 964 mSDsluCounter, 18657 mSDsCounter, 0 mSdLazyCounter, 11869 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 21658 SdHoareTripleChecker+Invalid, 12506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 11869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:52:38,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 21658 Invalid, 12506 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [637 Valid, 11869 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-07-22 23:52:38,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25746 states. [2022-07-22 23:52:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25746 to 21476. [2022-07-22 23:52:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21476 states, 15237 states have (on average 1.3467874253461967) internal successors, (20521), 15913 states have internal predecessors, (20521), 4721 states have call successors, (4721), 1275 states have call predecessors, (4721), 1517 states have return successors, (6912), 4748 states have call predecessors, (6912), 4720 states have call successors, (6912) [2022-07-22 23:52:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21476 states to 21476 states and 32154 transitions. [2022-07-22 23:52:39,879 INFO L78 Accepts]: Start accepts. Automaton has 21476 states and 32154 transitions. Word has length 149 [2022-07-22 23:52:39,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:52:39,880 INFO L495 AbstractCegarLoop]: Abstraction has 21476 states and 32154 transitions. [2022-07-22 23:52:39,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-22 23:52:39,880 INFO L276 IsEmpty]: Start isEmpty. Operand 21476 states and 32154 transitions. [2022-07-22 23:52:39,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-22 23:52:39,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:52:39,885 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:52:39,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:52:39,885 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:52:39,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:52:39,887 INFO L85 PathProgramCache]: Analyzing trace with hash -277307092, now seen corresponding path program 1 times [2022-07-22 23:52:39,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:52:39,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345810252] [2022-07-22 23:52:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:52:39,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:52:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:52:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:52:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:52:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:52:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:52:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:52:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:52:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:52:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 23:52:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 23:52:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 23:52:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:52:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-22 23:52:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:52:40,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345810252] [2022-07-22 23:52:40,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345810252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:52:40,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:52:40,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 23:52:40,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569750307] [2022-07-22 23:52:40,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:52:40,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 23:52:40,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:52:40,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 23:52:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:52:40,269 INFO L87 Difference]: Start difference. First operand 21476 states and 32154 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:52:50,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:52:50,608 INFO L93 Difference]: Finished difference Result 52292 states and 84323 transitions. [2022-07-22 23:52:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:52:50,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-07-22 23:52:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:52:50,889 INFO L225 Difference]: With dead ends: 52292 [2022-07-22 23:52:50,889 INFO L226 Difference]: Without dead ends: 30836 [2022-07-22 23:52:50,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:52:50,968 INFO L413 NwaCegarLoop]: 3022 mSDtfsCounter, 2384 mSDsluCounter, 9244 mSDsCounter, 0 mSdLazyCounter, 6502 mSolverCounterSat, 1639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2622 SdHoareTripleChecker+Valid, 12266 SdHoareTripleChecker+Invalid, 8141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1639 IncrementalHoareTripleChecker+Valid, 6502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:52:50,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2622 Valid, 12266 Invalid, 8141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1639 Valid, 6502 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-07-22 23:52:50,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30836 states. [2022-07-22 23:52:51,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30836 to 21575. [2022-07-22 23:52:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21575 states, 15290 states have (on average 1.3477436232831916) internal successors, (20607), 15985 states have internal predecessors, (20607), 4763 states have call successors, (4763), 1275 states have call predecessors, (4763), 1521 states have return successors, (6855), 4778 states have call predecessors, (6855), 4762 states have call successors, (6855) [2022-07-22 23:52:52,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21575 states to 21575 states and 32225 transitions. [2022-07-22 23:52:52,047 INFO L78 Accepts]: Start accepts. Automaton has 21575 states and 32225 transitions. Word has length 155 [2022-07-22 23:52:52,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:52:52,048 INFO L495 AbstractCegarLoop]: Abstraction has 21575 states and 32225 transitions. [2022-07-22 23:52:52,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:52:52,048 INFO L276 IsEmpty]: Start isEmpty. Operand 21575 states and 32225 transitions. [2022-07-22 23:52:52,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-22 23:52:52,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:52:52,053 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:52:52,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:52:52,053 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:52:52,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:52:52,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1754202023, now seen corresponding path program 1 times [2022-07-22 23:52:52,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:52:52,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036692592] [2022-07-22 23:52:52,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:52:52,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:52:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:52:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:52:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:52:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:52:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:52:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:52:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:52:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:52:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 23:52:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 23:52:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 23:52:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:52:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:52:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-07-22 23:52:52,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:52:52,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036692592] [2022-07-22 23:52:52,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036692592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:52:52,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:52:52,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 23:52:52,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122311065] [2022-07-22 23:52:52,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:52:52,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 23:52:52,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:52:52,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 23:52:52,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:52:52,429 INFO L87 Difference]: Start difference. First operand 21575 states and 32225 transitions. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:52:55,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:53:02,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-22 23:53:12,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:53:12,658 INFO L93 Difference]: Finished difference Result 47349 states and 73671 transitions. [2022-07-22 23:53:12,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 23:53:12,672 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) Word has length 170 [2022-07-22 23:53:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:53:12,830 INFO L225 Difference]: With dead ends: 47349 [2022-07-22 23:53:12,830 INFO L226 Difference]: Without dead ends: 25794 [2022-07-22 23:53:12,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:53:12,931 INFO L413 NwaCegarLoop]: 3010 mSDtfsCounter, 948 mSDsluCounter, 20920 mSDsCounter, 0 mSdLazyCounter, 12930 mSolverCounterSat, 640 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 23930 SdHoareTripleChecker+Invalid, 13572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 12930 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:53:12,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 23930 Invalid, 13572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [640 Valid, 12930 Invalid, 2 Unknown, 0 Unchecked, 18.6s Time] [2022-07-22 23:53:12,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25794 states. [2022-07-22 23:53:13,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25794 to 21589. [2022-07-22 23:53:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21589 states, 15304 states have (on average 1.3461186617877678) internal successors, (20601), 15992 states have internal predecessors, (20601), 4763 states have call successors, (4763), 1275 states have call predecessors, (4763), 1521 states have return successors, (6826), 4785 states have call predecessors, (6826), 4762 states have call successors, (6826) [2022-07-22 23:53:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21589 states to 21589 states and 32190 transitions. [2022-07-22 23:53:14,019 INFO L78 Accepts]: Start accepts. Automaton has 21589 states and 32190 transitions. Word has length 170 [2022-07-22 23:53:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:53:14,020 INFO L495 AbstractCegarLoop]: Abstraction has 21589 states and 32190 transitions. [2022-07-22 23:53:14,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:53:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 21589 states and 32190 transitions. [2022-07-22 23:53:14,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-22 23:53:14,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:53:14,026 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:53:14,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:53:14,026 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:53:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:53:14,027 INFO L85 PathProgramCache]: Analyzing trace with hash 729024575, now seen corresponding path program 1 times [2022-07-22 23:53:14,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:53:14,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428896226] [2022-07-22 23:53:14,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:53:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:53:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:53:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:53:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:53:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:53:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:53:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:53:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 23:53:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 23:53:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 23:53:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:53:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:53:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-22 23:53:14,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:53:14,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428896226] [2022-07-22 23:53:14,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428896226] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:53:14,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493444242] [2022-07-22 23:53:14,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:14,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:53:14,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:53:14,384 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) [2022-07-22 23:53:14,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 23:53:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:15,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:53:15,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:53:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-22 23:53:15,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:53:15,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493444242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:53:15,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:53:15,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-22 23:53:15,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906830651] [2022-07-22 23:53:15,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:53:15,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:53:15,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:53:15,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:53:15,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:53:15,357 INFO L87 Difference]: Start difference. First operand 21589 states and 32190 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:53:16,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:53:16,276 INFO L93 Difference]: Finished difference Result 43185 states and 64369 transitions. [2022-07-22 23:53:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:53:16,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-07-22 23:53:16,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:53:16,390 INFO L225 Difference]: With dead ends: 43185 [2022-07-22 23:53:16,390 INFO L226 Difference]: Without dead ends: 21554 [2022-07-22 23:53:16,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:53:16,459 INFO L413 NwaCegarLoop]: 3363 mSDtfsCounter, 2980 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:53:16,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2980 Valid, 3675 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:53:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21554 states. [2022-07-22 23:53:17,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21554 to 21533. [2022-07-22 23:53:17,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21533 states, 15257 states have (on average 1.3466605492560793) internal successors, (20546), 15940 states have internal predecessors, (20546), 4749 states have call successors, (4749), 1280 states have call predecessors, (4749), 1526 states have return successors, (6782), 4771 states have call predecessors, (6782), 4748 states have call successors, (6782) [2022-07-22 23:53:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21533 states to 21533 states and 32077 transitions. [2022-07-22 23:53:17,566 INFO L78 Accepts]: Start accepts. Automaton has 21533 states and 32077 transitions. Word has length 176 [2022-07-22 23:53:17,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:53:17,567 INFO L495 AbstractCegarLoop]: Abstraction has 21533 states and 32077 transitions. [2022-07-22 23:53:17,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:53:17,567 INFO L276 IsEmpty]: Start isEmpty. Operand 21533 states and 32077 transitions. [2022-07-22 23:53:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 23:53:17,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:53:17,574 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 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] [2022-07-22 23:53:17,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 23:53:17,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:53:17,788 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:53:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:53:17,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1418660964, now seen corresponding path program 1 times [2022-07-22 23:53:17,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:53:17,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535597995] [2022-07-22 23:53:17,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:17,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:53:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:53:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:53:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:53:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:53:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:53:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:53:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:53:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 23:53:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 23:53:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 23:53:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:19,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:19,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:19,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:53:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:19,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:53:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:19,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-22 23:53:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-22 23:53:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 23:53:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-07-22 23:53:19,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:53:19,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535597995] [2022-07-22 23:53:19,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535597995] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:53:19,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395761434] [2022-07-22 23:53:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:19,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:53:19,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:53:19,872 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) [2022-07-22 23:53:19,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 23:53:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:20,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 23:53:20,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:53:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-22 23:53:20,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:53:20,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395761434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:53:20,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:53:20,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 29 [2022-07-22 23:53:20,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663061706] [2022-07-22 23:53:20,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:53:20,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:53:20,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:53:20,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:53:20,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2022-07-22 23:53:20,940 INFO L87 Difference]: Start difference. First operand 21533 states and 32077 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-22 23:53:21,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:53:21,884 INFO L93 Difference]: Finished difference Result 42822 states and 63829 transitions. [2022-07-22 23:53:21,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:53:21,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 190 [2022-07-22 23:53:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:53:22,020 INFO L225 Difference]: With dead ends: 42822 [2022-07-22 23:53:22,020 INFO L226 Difference]: Without dead ends: 21528 [2022-07-22 23:53:22,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2022-07-22 23:53:22,104 INFO L413 NwaCegarLoop]: 3109 mSDtfsCounter, 3 mSDsluCounter, 9316 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12425 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:53:22,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12425 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:53:22,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21528 states. [2022-07-22 23:53:23,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21528 to 21528. [2022-07-22 23:53:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21528 states, 15254 states have (on average 1.3466631703159826) internal successors, (20542), 15937 states have internal predecessors, (20542), 4748 states have call successors, (4748), 1279 states have call predecessors, (4748), 1525 states have return successors, (6781), 4770 states have call predecessors, (6781), 4747 states have call successors, (6781) [2022-07-22 23:53:23,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21528 states to 21528 states and 32071 transitions. [2022-07-22 23:53:23,168 INFO L78 Accepts]: Start accepts. Automaton has 21528 states and 32071 transitions. Word has length 190 [2022-07-22 23:53:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:53:23,169 INFO L495 AbstractCegarLoop]: Abstraction has 21528 states and 32071 transitions. [2022-07-22 23:53:23,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-22 23:53:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 21528 states and 32071 transitions. [2022-07-22 23:53:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-22 23:53:23,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:53:23,176 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:53:23,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 23:53:23,391 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 [2022-07-22 23:53:23,392 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:53:23,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:53:23,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1539380712, now seen corresponding path program 1 times [2022-07-22 23:53:23,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:53:23,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498374547] [2022-07-22 23:53:23,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:23,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:53:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:53:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:53:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:53:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:53:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:53:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:53:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:53:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 23:53:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:53:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 23:53:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 23:53:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:24,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:25,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:25,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:25,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:25,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:53:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:25,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:53:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:25,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-22 23:53:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-22 23:53:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:25,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-22 23:53:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-07-22 23:53:25,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:53:25,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498374547] [2022-07-22 23:53:25,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498374547] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:53:25,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871455484] [2022-07-22 23:53:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:25,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:53:25,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:53:25,538 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) [2022-07-22 23:53:25,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 23:53:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:26,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-22 23:53:26,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:53:26,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-22 23:53:26,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-22 23:53:26,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-22 23:53:26,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-22 23:53:26,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-22 23:53:26,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-22 23:53:26,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-22 23:53:26,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-22 23:53:27,197 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 23:53:27,198 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 1 case distinctions, treesize of input 12 treesize of output 18 [2022-07-22 23:53:27,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-22 23:53:27,407 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 9 treesize of output 7 [2022-07-22 23:53:27,549 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 9 treesize of output 7 [2022-07-22 23:53:27,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-22 23:53:27,769 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 9 treesize of output 7 [2022-07-22 23:53:28,238 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 23:53:28,238 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 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-22 23:53:28,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-22 23:53:28,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-22 23:53:29,054 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 6 treesize of output 5 [2022-07-22 23:53:29,062 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 [2022-07-22 23:53:29,182 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 6 treesize of output 5 [2022-07-22 23:53:29,191 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 [2022-07-22 23:53:29,293 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 6 treesize of output 5 [2022-07-22 23:53:29,302 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 [2022-07-22 23:53:30,735 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 23:53:30,736 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-22 23:53:30,746 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 [2022-07-22 23:53:31,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 23:53:31,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 23:53:31,159 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 23:53:31,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2022-07-22 23:53:31,178 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 23:53:31,179 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 15 treesize of output 15 [2022-07-22 23:53:31,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2022-07-22 23:53:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-07-22 23:53:31,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:53:31,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871455484] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:53:31,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:53:31,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21] total 44 [2022-07-22 23:53:31,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123414999] [2022-07-22 23:53:31,917 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:53:31,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-22 23:53:31,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:53:31,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-22 23:53:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1898, Unknown=13, NotChecked=0, Total=2070 [2022-07-22 23:53:31,919 INFO L87 Difference]: Start difference. First operand 21528 states and 32071 transitions. Second operand has 44 states, 44 states have (on average 4.818181818181818) internal successors, (212), 33 states have internal predecessors, (212), 15 states have call successors, (52), 12 states have call predecessors, (52), 16 states have return successors, (51), 20 states have call predecessors, (51), 15 states have call successors, (51) [2022-07-22 23:54:02,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:54:04,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:54:06,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:54:08,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []