./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-18 04:14:18,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 04:14:19,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 04:14:19,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 04:14:19,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 04:14:19,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 04:14:19,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 04:14:19,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 04:14:19,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 04:14:19,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 04:14:19,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 04:14:19,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 04:14:19,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 04:14:19,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 04:14:19,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 04:14:19,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 04:14:19,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 04:14:19,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 04:14:19,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 04:14:19,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 04:14:19,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 04:14:19,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 04:14:19,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 04:14:19,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 04:14:19,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 04:14:19,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 04:14:19,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 04:14:19,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 04:14:19,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 04:14:19,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 04:14:19,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 04:14:19,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 04:14:19,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 04:14:19,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 04:14:19,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 04:14:19,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 04:14:19,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 04:14:19,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 04:14:19,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 04:14:19,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 04:14:19,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 04:14:19,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 04:14:19,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 04:14:19,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 04:14:19,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 04:14:19,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 04:14:19,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 04:14:19,152 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 04:14:19,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 04:14:19,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 04:14:19,153 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 04:14:19,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 04:14:19,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 04:14:19,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 04:14:19,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 04:14:19,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 04:14:19,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 04:14:19,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 04:14:19,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 04:14:19,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 04:14:19,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 04:14:19,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 04:14:19,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 04:14:19,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 04:14:19,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 04:14:19,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 04:14:19,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 04:14:19,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 04:14:19,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 04:14:19,159 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 04:14:19,159 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 04:14:19,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 04:14:19,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 04:14:19,160 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 [2021-12-18 04:14:19,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 04:14:19,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 04:14:19,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 04:14:19,394 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 04:14:19,394 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 04:14:19,395 INFO L432 ainManager$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 [2021-12-18 04:14:19,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d24e3f6/196dab9d000a46f59947a5e36df45644/FLAG72721d53f [2021-12-18 04:14:20,236 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 04:14:20,237 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 [2021-12-18 04:14:20,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d24e3f6/196dab9d000a46f59947a5e36df45644/FLAG72721d53f [2021-12-18 04:14:20,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d24e3f6/196dab9d000a46f59947a5e36df45644 [2021-12-18 04:14:20,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 04:14:20,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 04:14:20,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 04:14:20,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 04:14:20,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 04:14:20,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:14:20" (1/1) ... [2021-12-18 04:14:20,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cad638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:20, skipping insertion in model container [2021-12-18 04:14:20,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:14:20" (1/1) ... [2021-12-18 04:14:20,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 04:14:20,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 04:14:22,603 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] [2021-12-18 04:14:23,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 04:14:23,475 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 04:14:23,637 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] [2021-12-18 04:14:23,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 04:14:23,919 INFO L208 MainTranslator]: Completed translation [2021-12-18 04:14:23,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:23 WrapperNode [2021-12-18 04:14:23,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 04:14:23,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 04:14:23,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 04:14:23,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 04:14:23,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:23" (1/1) ... [2021-12-18 04:14:24,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:23" (1/1) ... [2021-12-18 04:14:24,218 INFO L137 Inliner]: procedures = 375, calls = 2229, calls flagged for inlining = 193, calls inlined = 191, statements flattened = 6424 [2021-12-18 04:14:24,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 04:14:24,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 04:14:24,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 04:14:24,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 04:14:24,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:23" (1/1) ... [2021-12-18 04:14:24,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:23" (1/1) ... [2021-12-18 04:14:24,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:23" (1/1) ... [2021-12-18 04:14:24,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:23" (1/1) ... [2021-12-18 04:14:24,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:23" (1/1) ... [2021-12-18 04:14:24,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:23" (1/1) ... [2021-12-18 04:14:24,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:23" (1/1) ... [2021-12-18 04:14:24,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 04:14:24,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 04:14:24,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 04:14:24,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 04:14:24,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:23" (1/1) ... [2021-12-18 04:14:24,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 04:14:24,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:14:24,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 04:14:24,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 04:14:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_destroy [2021-12-18 04:14:24,627 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_destroy [2021-12-18 04:14:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2021-12-18 04:14:24,627 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2021-12-18 04:14:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-18 04:14:24,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-18 04:14:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2021-12-18 04:14:24,628 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2021-12-18 04:14:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-18 04:14:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2021-12-18 04:14:24,628 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2021-12-18 04:14:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 04:14:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 04:14:24,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 04:14:24,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 04:14:24,629 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-18 04:14:24,629 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-18 04:14:24,629 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-12-18 04:14:24,629 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-12-18 04:14:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2021-12-18 04:14:24,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2021-12-18 04:14:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2021-12-18 04:14:24,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2021-12-18 04:14:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2021-12-18 04:14:24,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2021-12-18 04:14:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2021-12-18 04:14:24,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2021-12-18 04:14:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-18 04:14:24,631 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-18 04:14:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-18 04:14:24,631 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-18 04:14:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-18 04:14:24,632 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-18 04:14:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 04:14:24,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 04:14:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2021-12-18 04:14:24,632 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2021-12-18 04:14:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2021-12-18 04:14:24,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2021-12-18 04:14:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-18 04:14:24,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-18 04:14:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2021-12-18 04:14:24,634 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2021-12-18 04:14:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 04:14:24,634 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 04:14:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2021-12-18 04:14:24,634 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2021-12-18 04:14:24,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 04:14:24,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 04:14:24,635 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2021-12-18 04:14:24,635 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2021-12-18 04:14:24,635 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-18 04:14:24,635 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-18 04:14:24,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 04:14:24,636 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 04:14:24,636 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2021-12-18 04:14:24,637 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2021-12-18 04:14:24,638 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 04:14:24,638 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 04:14:24,638 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-18 04:14:24,639 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-18 04:14:24,639 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 04:14:24,639 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 04:14:24,639 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2021-12-18 04:14:24,639 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2021-12-18 04:14:24,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_19 [2021-12-18 04:14:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_19 [2021-12-18 04:14:24,640 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2021-12-18 04:14:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2021-12-18 04:14:24,640 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2021-12-18 04:14:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2021-12-18 04:14:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 04:14:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 04:14:24,641 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 04:14:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-12-18 04:14:24,642 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-12-18 04:14:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-12-18 04:14:24,642 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-12-18 04:14:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 04:14:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-18 04:14:24,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-18 04:14:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_get_stats64 [2021-12-18 04:14:24,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_get_stats64 [2021-12-18 04:14:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-12-18 04:14:24,644 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-12-18 04:14:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-18 04:14:24,644 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-18 04:14:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2021-12-18 04:14:24,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2021-12-18 04:14:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-18 04:14:24,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-18 04:14:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 04:14:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 04:14:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_error [2021-12-18 04:14:24,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_error [2021-12-18 04:14:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2021-12-18 04:14:24,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2021-12-18 04:14:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-18 04:14:24,647 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-18 04:14:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-18 04:14:24,648 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-18 04:14:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_create [2021-12-18 04:14:24,648 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_create [2021-12-18 04:14:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 04:14:24,649 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 04:14:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-18 04:14:24,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-18 04:14:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2021-12-18 04:14:24,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2021-12-18 04:14:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-18 04:14:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-18 04:14:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 04:14:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 04:14:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 04:14:24,651 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 04:14:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2021-12-18 04:14:24,651 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2021-12-18 04:14:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2021-12-18 04:14:24,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2021-12-18 04:14:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-18 04:14:24,654 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-18 04:14:24,655 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-18 04:14:24,655 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-18 04:14:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 04:14:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-18 04:14:24,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-18 04:14:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-18 04:14:24,657 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-18 04:14:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2021-12-18 04:14:24,663 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2021-12-18 04:14:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-18 04:14:24,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-18 04:14:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2021-12-18 04:14:24,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2021-12-18 04:14:24,664 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_net_ioctl [2021-12-18 04:14:24,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_net_ioctl [2021-12-18 04:14:24,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 04:14:24,664 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2021-12-18 04:14:24,664 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2021-12-18 04:14:24,664 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-18 04:14:24,665 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-18 04:14:24,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 04:14:24,665 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-18 04:14:24,665 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-18 04:14:24,665 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-12-18 04:14:24,665 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-12-18 04:14:24,665 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2021-12-18 04:14:24,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2021-12-18 04:14:24,666 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2021-12-18 04:14:24,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2021-12-18 04:14:24,666 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-12-18 04:14:24,666 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-12-18 04:14:24,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-18 04:14:24,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-18 04:14:24,667 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2021-12-18 04:14:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2021-12-18 04:14:24,667 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_do_recv [2021-12-18 04:14:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_do_recv [2021-12-18 04:14:24,667 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2021-12-18 04:14:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2021-12-18 04:14:24,667 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2021-12-18 04:14:24,668 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2021-12-18 04:14:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_16 [2021-12-18 04:14:24,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_16 [2021-12-18 04:14:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-12-18 04:14:24,668 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-12-18 04:14:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2021-12-18 04:14:24,668 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2021-12-18 04:14:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2021-12-18 04:14:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2021-12-18 04:14:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-18 04:14:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-18 04:14:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 04:14:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 04:14:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2021-12-18 04:14:24,670 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2021-12-18 04:14:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_nonmp_frame [2021-12-18 04:14:24,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_nonmp_frame [2021-12-18 04:14:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-12-18 04:14:24,670 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-12-18 04:14:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 04:14:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-18 04:14:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-18 04:14:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-18 04:14:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-18 04:14:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-12-18 04:14:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-12-18 04:14:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_write [2021-12-18 04:14:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_write [2021-12-18 04:14:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 04:14:24,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 04:14:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2021-12-18 04:14:24,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2021-12-18 04:14:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2021-12-18 04:14:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2021-12-18 04:14:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 04:14:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-18 04:14:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-18 04:14:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-18 04:14:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-18 04:14:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 04:14:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-18 04:14:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-18 04:14:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 04:14:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-18 04:14:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-18 04:14:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 04:14:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2021-12-18 04:14:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2021-12-18 04:14:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 04:14:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 04:14:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-12-18 04:14:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-12-18 04:14:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-12-18 04:14:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-12-18 04:14:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2021-12-18 04:14:24,677 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2021-12-18 04:14:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-18 04:14:24,677 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-18 04:14:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-18 04:14:24,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-18 04:14:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-18 04:14:24,677 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-18 04:14:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2021-12-18 04:14:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2021-12-18 04:14:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-18 04:14:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-18 04:14:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-12-18 04:14:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-12-18 04:14:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-18 04:14:24,679 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-18 04:14:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_net_channel [2021-12-18 04:14:24,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_net_channel [2021-12-18 04:14:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-18 04:14:24,679 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-18 04:14:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2021-12-18 04:14:24,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2021-12-18 04:14:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2021-12-18 04:14:24,680 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2021-12-18 04:14:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 04:14:24,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 04:14:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2021-12-18 04:14:24,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2021-12-18 04:14:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2021-12-18 04:14:24,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2021-12-18 04:14:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_44 [2021-12-18 04:14:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_44 [2021-12-18 04:14:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_poll [2021-12-18 04:14:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_poll [2021-12-18 04:14:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 04:14:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2021-12-18 04:14:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2021-12-18 04:14:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-18 04:14:24,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-18 04:14:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 04:14:24,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 04:14:24,687 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-18 04:14:24,688 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-18 04:14:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-18 04:14:24,688 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-18 04:14:25,473 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 04:14:25,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 04:14:25,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 04:14:28,703 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 04:14:28,731 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 04:14:28,732 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-18 04:14:28,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:14:28 BoogieIcfgContainer [2021-12-18 04:14:28,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 04:14:28,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 04:14:28,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 04:14:28,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 04:14:28,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 04:14:20" (1/3) ... [2021-12-18 04:14:28,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c56467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:14:28, skipping insertion in model container [2021-12-18 04:14:28,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:14:23" (2/3) ... [2021-12-18 04:14:28,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c56467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:14:28, skipping insertion in model container [2021-12-18 04:14:28,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:14:28" (3/3) ... [2021-12-18 04:14:28,743 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 [2021-12-18 04:14:28,748 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 04:14:28,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 04:14:28,795 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 04:14:28,801 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 04:14:28,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 04:14:28,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 2163 states, 1526 states have (on average 1.374180865006553) internal successors, (2097), 1585 states have internal predecessors, (2097), 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) [2021-12-18 04:14:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-18 04:14:28,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:14:28,861 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:14:28,861 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:14:28,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:14:28,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1166428172, now seen corresponding path program 1 times [2021-12-18 04:14:28,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:14:28,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807655298] [2021-12-18 04:14:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:14:28,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:14:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:14:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:14:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:14:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:14:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:29,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:14:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:29,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:14:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:29,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:14:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:29,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:14:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-18 04:14:29,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:14:29,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807655298] [2021-12-18 04:14:29,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807655298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:14:29,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:14:29,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:14:29,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828044612] [2021-12-18 04:14:29,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:14:29,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:14:29,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:14:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:14:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:14:29,618 INFO L87 Difference]: Start difference. First operand has 2163 states, 1526 states have (on average 1.374180865006553) internal successors, (2097), 1585 states have internal predecessors, (2097), 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) [2021-12-18 04:14:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:14:37,114 INFO L93 Difference]: Finished difference Result 7078 states and 10935 transitions. [2021-12-18 04:14:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:14:37,118 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 [2021-12-18 04:14:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:14:37,184 INFO L225 Difference]: With dead ends: 7078 [2021-12-18 04:14:37,185 INFO L226 Difference]: Without dead ends: 4873 [2021-12-18 04:14:37,207 INFO L932 BasicCegarLoop]: 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 [2021-12-18 04:14:37,210 INFO L933 BasicCegarLoop]: 3694 mSDtfsCounter, 4522 mSDsluCounter, 10658 mSDsCounter, 0 mSdLazyCounter, 4219 mSolverCounterSat, 1609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4895 SdHoareTripleChecker+Valid, 14352 SdHoareTripleChecker+Invalid, 5828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1609 IncrementalHoareTripleChecker+Valid, 4219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-18 04:14:37,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4895 Valid, 14352 Invalid, 5828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1609 Valid, 4219 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-12-18 04:14:37,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2021-12-18 04:14:37,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 4383. [2021-12-18 04:14:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4383 states, 3101 states have (on average 1.366010964205095) internal successors, (4236), 3214 states have internal predecessors, (4236), 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) [2021-12-18 04:14:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 6455 transitions. [2021-12-18 04:14:37,550 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 6455 transitions. Word has length 69 [2021-12-18 04:14:37,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:14:37,551 INFO L470 AbstractCegarLoop]: Abstraction has 4383 states and 6455 transitions. [2021-12-18 04:14:37,552 INFO L471 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) [2021-12-18 04:14:37,552 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 6455 transitions. [2021-12-18 04:14:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-18 04:14:37,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:14:37,569 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:14:37,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 04:14:37,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:14:37,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:14:37,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1147589655, now seen corresponding path program 1 times [2021-12-18 04:14:37,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:14:37,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484820172] [2021-12-18 04:14:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:14:37,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:14:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:14:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:14:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:14:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:14:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:14:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:14:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:14:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:14:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 04:14:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:14:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 04:14:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:14:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-18 04:14:37,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:14:37,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484820172] [2021-12-18 04:14:37,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484820172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:14:37,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:14:37,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 04:14:37,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901188818] [2021-12-18 04:14:37,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:14:37,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:14:37,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:14:37,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:14:37,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 04:14:37,901 INFO L87 Difference]: Start difference. First operand 4383 states and 6455 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) [2021-12-18 04:14:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:14:47,915 INFO L93 Difference]: Finished difference Result 14573 states and 22266 transitions. [2021-12-18 04:14:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 04:14:47,916 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 [2021-12-18 04:14:47,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:14:47,982 INFO L225 Difference]: With dead ends: 14573 [2021-12-18 04:14:47,982 INFO L226 Difference]: Without dead ends: 10210 [2021-12-18 04:14:48,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:14:48,004 INFO L933 BasicCegarLoop]: 3679 mSDtfsCounter, 6506 mSDsluCounter, 5242 mSDsCounter, 0 mSdLazyCounter, 4687 mSolverCounterSat, 3345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6852 SdHoareTripleChecker+Valid, 8921 SdHoareTripleChecker+Invalid, 8032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3345 IncrementalHoareTripleChecker+Valid, 4687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-12-18 04:14:48,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6852 Valid, 8921 Invalid, 8032 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3345 Valid, 4687 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-12-18 04:14:48,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10210 states. [2021-12-18 04:14:48,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10210 to 8739. [2021-12-18 04:14:48,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8739 states, 6145 states have (on average 1.3549227013832383) internal successors, (8326), 6389 states have internal predecessors, (8326), 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) [2021-12-18 04:14:48,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8739 states to 8739 states and 13154 transitions. [2021-12-18 04:14:48,462 INFO L78 Accepts]: Start accepts. Automaton has 8739 states and 13154 transitions. Word has length 105 [2021-12-18 04:14:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:14:48,463 INFO L470 AbstractCegarLoop]: Abstraction has 8739 states and 13154 transitions. [2021-12-18 04:14:48,464 INFO L471 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) [2021-12-18 04:14:48,465 INFO L276 IsEmpty]: Start isEmpty. Operand 8739 states and 13154 transitions. [2021-12-18 04:14:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-18 04:14:48,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:14:48,471 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:14:48,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 04:14:48,472 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:14:48,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:14:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1215083750, now seen corresponding path program 1 times [2021-12-18 04:14:48,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:14:48,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999601769] [2021-12-18 04:14:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:14:48,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:14:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:14:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:14:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:14:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:14:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:14:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:14:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:14:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:14:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:14:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:14:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:14:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:14:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-18 04:14:48,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:14:48,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999601769] [2021-12-18 04:14:48,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999601769] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:14:48,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:14:48,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:14:48,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243105010] [2021-12-18 04:14:48,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:14:48,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:14:48,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:14:48,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:14:48,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:14:48,781 INFO L87 Difference]: Start difference. First operand 8739 states and 13154 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) [2021-12-18 04:14:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:14:58,722 INFO L93 Difference]: Finished difference Result 25654 states and 39179 transitions. [2021-12-18 04:14:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:14:58,723 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 [2021-12-18 04:14:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:14:58,864 INFO L225 Difference]: With dead ends: 25654 [2021-12-18 04:14:58,865 INFO L226 Difference]: Without dead ends: 16935 [2021-12-18 04:14:58,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-18 04:14:58,971 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 3097 mSDsluCounter, 7898 mSDsCounter, 0 mSdLazyCounter, 5937 mSolverCounterSat, 1116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3365 SdHoareTripleChecker+Valid, 12495 SdHoareTripleChecker+Invalid, 7053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1116 IncrementalHoareTripleChecker+Valid, 5937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-12-18 04:14:58,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3365 Valid, 12495 Invalid, 7053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1116 Valid, 5937 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2021-12-18 04:14:58,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16935 states. [2021-12-18 04:14:59,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16935 to 14784. [2021-12-18 04:14:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14784 states, 10413 states have (on average 1.3509075194468454) internal successors, (14067), 10863 states have internal predecessors, (14067), 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) [2021-12-18 04:14:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14784 states to 14784 states and 22087 transitions. [2021-12-18 04:14:59,662 INFO L78 Accepts]: Start accepts. Automaton has 14784 states and 22087 transitions. Word has length 108 [2021-12-18 04:14:59,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:14:59,663 INFO L470 AbstractCegarLoop]: Abstraction has 14784 states and 22087 transitions. [2021-12-18 04:14:59,663 INFO L471 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) [2021-12-18 04:14:59,663 INFO L276 IsEmpty]: Start isEmpty. Operand 14784 states and 22087 transitions. [2021-12-18 04:14:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-18 04:14:59,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:14:59,674 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:14:59,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 04:14:59,674 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:14:59,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:14:59,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1577830905, now seen corresponding path program 1 times [2021-12-18 04:14:59,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:14:59,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671590707] [2021-12-18 04:14:59,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:14:59,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:14:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:59,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:14:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:59,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:14:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:14:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:59,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:14:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:59,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:14:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:14:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:14:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:59,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:14:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:14:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:59,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 04:14:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:15:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 04:15:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:00,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:00,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-18 04:15:00,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:15:00,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671590707] [2021-12-18 04:15:00,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671590707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:15:00,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:15:00,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 04:15:00,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370638084] [2021-12-18 04:15:00,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:15:00,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 04:15:00,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:15:00,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 04:15:00,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 04:15:00,103 INFO L87 Difference]: Start difference. First operand 14784 states and 22087 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-18 04:15:07,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:15:07,988 INFO L93 Difference]: Finished difference Result 48558 states and 74043 transitions. [2021-12-18 04:15:07,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 04:15:07,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 142 [2021-12-18 04:15:07,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:15:08,235 INFO L225 Difference]: With dead ends: 48558 [2021-12-18 04:15:08,235 INFO L226 Difference]: Without dead ends: 33758 [2021-12-18 04:15:08,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-12-18 04:15:08,438 INFO L933 BasicCegarLoop]: 3593 mSDtfsCounter, 5952 mSDsluCounter, 9911 mSDsCounter, 0 mSdLazyCounter, 4927 mSolverCounterSat, 2958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6375 SdHoareTripleChecker+Valid, 13504 SdHoareTripleChecker+Invalid, 7885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2958 IncrementalHoareTripleChecker+Valid, 4927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-18 04:15:08,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6375 Valid, 13504 Invalid, 7885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2958 Valid, 4927 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-12-18 04:15:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33758 states. [2021-12-18 04:15:09,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33758 to 29382. [2021-12-18 04:15:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29382 states, 20692 states have (on average 1.3517301372511115) internal successors, (27970), 21582 states have internal predecessors, (27970), 6682 states have call successors, (6682), 1714 states have call predecessors, (6682), 2007 states have return successors, (9273), 6698 states have call predecessors, (9273), 6681 states have call successors, (9273) [2021-12-18 04:15:09,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29382 states to 29382 states and 43925 transitions. [2021-12-18 04:15:09,919 INFO L78 Accepts]: Start accepts. Automaton has 29382 states and 43925 transitions. Word has length 142 [2021-12-18 04:15:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:15:09,920 INFO L470 AbstractCegarLoop]: Abstraction has 29382 states and 43925 transitions. [2021-12-18 04:15:09,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-18 04:15:09,921 INFO L276 IsEmpty]: Start isEmpty. Operand 29382 states and 43925 transitions. [2021-12-18 04:15:09,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-18 04:15:09,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:15:09,930 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 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] [2021-12-18 04:15:09,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 04:15:09,931 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:15:09,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:15:09,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2028882515, now seen corresponding path program 1 times [2021-12-18 04:15:09,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:15:09,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716781970] [2021-12-18 04:15:09,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:09,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:15:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:15:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:15:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:15:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:15:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:15:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 04:15:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:15:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 04:15:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 04:15:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-18 04:15:10,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:15:10,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716781970] [2021-12-18 04:15:10,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716781970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:15:10,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:15:10,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 04:15:10,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843736775] [2021-12-18 04:15:10,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:15:10,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 04:15:10,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:15:10,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 04:15:10,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-18 04:15:10,622 INFO L87 Difference]: Start difference. First operand 29382 states and 43925 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 04:15:17,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:15:17,076 INFO L93 Difference]: Finished difference Result 50085 states and 77282 transitions. [2021-12-18 04:15:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 04:15:17,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2021-12-18 04:15:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:15:17,198 INFO L225 Difference]: With dead ends: 50085 [2021-12-18 04:15:17,198 INFO L226 Difference]: Without dead ends: 20723 [2021-12-18 04:15:17,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:15:17,289 INFO L933 BasicCegarLoop]: 3106 mSDtfsCounter, 5726 mSDsluCounter, 5621 mSDsCounter, 0 mSdLazyCounter, 3800 mSolverCounterSat, 2696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6076 SdHoareTripleChecker+Valid, 8727 SdHoareTripleChecker+Invalid, 6496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2696 IncrementalHoareTripleChecker+Valid, 3800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-18 04:15:17,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6076 Valid, 8727 Invalid, 6496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2696 Valid, 3800 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-12-18 04:15:17,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20723 states. [2021-12-18 04:15:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20723 to 14763. [2021-12-18 04:15:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14763 states, 10398 states have (on average 1.3496826312752452) internal successors, (14034), 10841 states have internal predecessors, (14034), 3356 states have call successors, (3356), 862 states have call predecessors, (3356), 1008 states have return successors, (4658), 3366 states have call predecessors, (4658), 3355 states have call successors, (4658) [2021-12-18 04:15:18,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14763 states to 14763 states and 22048 transitions. [2021-12-18 04:15:18,116 INFO L78 Accepts]: Start accepts. Automaton has 14763 states and 22048 transitions. Word has length 155 [2021-12-18 04:15:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:15:18,118 INFO L470 AbstractCegarLoop]: Abstraction has 14763 states and 22048 transitions. [2021-12-18 04:15:18,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 04:15:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 14763 states and 22048 transitions. [2021-12-18 04:15:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-18 04:15:18,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:15:18,125 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 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] [2021-12-18 04:15:18,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 04:15:18,126 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:15:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:15:18,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1405633883, now seen corresponding path program 1 times [2021-12-18 04:15:18,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:15:18,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145286503] [2021-12-18 04:15:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:18,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:15:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:15:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:15:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:15:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:15:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:15:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 04:15:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:15:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 04:15:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 04:15:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 04:15:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-18 04:15:18,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:15:18,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145286503] [2021-12-18 04:15:18,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145286503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:15:18,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:15:18,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 04:15:18,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459395278] [2021-12-18 04:15:18,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:15:18,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 04:15:18,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:15:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 04:15:18,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 04:15:18,565 INFO L87 Difference]: Start difference. First operand 14763 states and 22048 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-18 04:15:32,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:15:32,888 INFO L93 Difference]: Finished difference Result 44259 states and 69577 transitions. [2021-12-18 04:15:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 04:15:32,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 162 [2021-12-18 04:15:32,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:15:33,091 INFO L225 Difference]: With dead ends: 44259 [2021-12-18 04:15:33,092 INFO L226 Difference]: Without dead ends: 29516 [2021-12-18 04:15:33,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-18 04:15:33,149 INFO L933 BasicCegarLoop]: 4269 mSDtfsCounter, 4402 mSDsluCounter, 9070 mSDsCounter, 0 mSdLazyCounter, 8176 mSolverCounterSat, 2056 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4865 SdHoareTripleChecker+Valid, 13339 SdHoareTripleChecker+Invalid, 10232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2056 IncrementalHoareTripleChecker+Valid, 8176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-12-18 04:15:33,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4865 Valid, 13339 Invalid, 10232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2056 Valid, 8176 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2021-12-18 04:15:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29516 states. [2021-12-18 04:15:34,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29516 to 21040. [2021-12-18 04:15:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21040 states, 14838 states have (on average 1.3476883677045424) internal successors, (19997), 15495 states have internal predecessors, (19997), 4714 states have call successors, (4714), 1272 states have call predecessors, (4714), 1487 states have return successors, (6607), 4726 states have call predecessors, (6607), 4713 states have call successors, (6607) [2021-12-18 04:15:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21040 states to 21040 states and 31318 transitions. [2021-12-18 04:15:34,177 INFO L78 Accepts]: Start accepts. Automaton has 21040 states and 31318 transitions. Word has length 162 [2021-12-18 04:15:34,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:15:34,177 INFO L470 AbstractCegarLoop]: Abstraction has 21040 states and 31318 transitions. [2021-12-18 04:15:34,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-18 04:15:34,178 INFO L276 IsEmpty]: Start isEmpty. Operand 21040 states and 31318 transitions. [2021-12-18 04:15:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-18 04:15:34,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:15:34,185 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 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] [2021-12-18 04:15:34,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 04:15:34,185 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:15:34,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:15:34,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1163032635, now seen corresponding path program 1 times [2021-12-18 04:15:34,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:15:34,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275517037] [2021-12-18 04:15:34,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:34,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:15:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:15:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:15:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:15:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:15:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:15:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 04:15:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:15:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 04:15:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 04:15:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 04:15:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-12-18 04:15:34,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:15:34,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275517037] [2021-12-18 04:15:34,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275517037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:15:34,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:15:34,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-18 04:15:34,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492830824] [2021-12-18 04:15:34,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:15:34,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 04:15:34,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:15:34,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 04:15:34,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-18 04:15:34,697 INFO L87 Difference]: Start difference. First operand 21040 states and 31318 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 04:15:43,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:15:43,937 INFO L93 Difference]: Finished difference Result 50607 states and 80826 transitions. [2021-12-18 04:15:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 04:15:43,938 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 1 states have call successors, (18) Word has length 162 [2021-12-18 04:15:43,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:15:44,123 INFO L225 Difference]: With dead ends: 50607 [2021-12-18 04:15:44,124 INFO L226 Difference]: Without dead ends: 29587 [2021-12-18 04:15:44,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2021-12-18 04:15:44,228 INFO L933 BasicCegarLoop]: 3078 mSDtfsCounter, 2247 mSDsluCounter, 21205 mSDsCounter, 0 mSdLazyCounter, 9192 mSolverCounterSat, 1598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2491 SdHoareTripleChecker+Valid, 24283 SdHoareTripleChecker+Invalid, 10790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1598 IncrementalHoareTripleChecker+Valid, 9192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-18 04:15:44,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2491 Valid, 24283 Invalid, 10790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1598 Valid, 9192 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-12-18 04:15:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29587 states. [2021-12-18 04:15:45,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29587 to 21151. [2021-12-18 04:15:45,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21151 states, 14922 states have (on average 1.3463342715453692) internal successors, (20090), 15591 states have internal predecessors, (20090), 4714 states have call successors, (4714), 1272 states have call predecessors, (4714), 1514 states have return successors, (6901), 4741 states have call predecessors, (6901), 4713 states have call successors, (6901) [2021-12-18 04:15:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21151 states to 21151 states and 31705 transitions. [2021-12-18 04:15:45,389 INFO L78 Accepts]: Start accepts. Automaton has 21151 states and 31705 transitions. Word has length 162 [2021-12-18 04:15:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:15:45,389 INFO L470 AbstractCegarLoop]: Abstraction has 21151 states and 31705 transitions. [2021-12-18 04:15:45,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 04:15:45,390 INFO L276 IsEmpty]: Start isEmpty. Operand 21151 states and 31705 transitions. [2021-12-18 04:15:45,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-18 04:15:45,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:15:45,395 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:15:45,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 04:15:45,395 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:15:45,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:15:45,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1851997309, now seen corresponding path program 1 times [2021-12-18 04:15:45,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:15:45,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889040299] [2021-12-18 04:15:45,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:45,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:15:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:15:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:15:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:15:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:15:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:15:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 04:15:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:15:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 04:15:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 04:15:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 04:15:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 04:15:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-12-18 04:15:45,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:15:45,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889040299] [2021-12-18 04:15:45,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889040299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:15:45,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:15:45,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 04:15:45,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812287228] [2021-12-18 04:15:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:15:45,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 04:15:45,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:15:45,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 04:15:45,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:15:45,815 INFO L87 Difference]: Start difference. First operand 21151 states and 31705 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 04:15:53,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:15:53,934 INFO L93 Difference]: Finished difference Result 50466 states and 81001 transitions. [2021-12-18 04:15:53,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 04:15:53,935 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2021-12-18 04:15:53,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:15:54,073 INFO L225 Difference]: With dead ends: 50466 [2021-12-18 04:15:54,074 INFO L226 Difference]: Without dead ends: 29335 [2021-12-18 04:15:54,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:15:54,177 INFO L933 BasicCegarLoop]: 2985 mSDtfsCounter, 2196 mSDsluCounter, 11537 mSDsCounter, 0 mSdLazyCounter, 6014 mSolverCounterSat, 1608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 14522 SdHoareTripleChecker+Invalid, 7622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1608 IncrementalHoareTripleChecker+Valid, 6014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-18 04:15:54,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2438 Valid, 14522 Invalid, 7622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1608 Valid, 6014 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-12-18 04:15:54,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29335 states. [2021-12-18 04:15:55,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29335 to 21238. [2021-12-18 04:15:55,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21238 states, 14963 states have (on average 1.3473902292321058) internal successors, (20161), 15651 states have internal predecessors, (20161), 4756 states have call successors, (4756), 1272 states have call predecessors, (4756), 1518 states have return successors, (6844), 4771 states have call predecessors, (6844), 4755 states have call successors, (6844) [2021-12-18 04:15:55,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21238 states to 21238 states and 31761 transitions. [2021-12-18 04:15:55,131 INFO L78 Accepts]: Start accepts. Automaton has 21238 states and 31761 transitions. Word has length 168 [2021-12-18 04:15:55,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:15:55,132 INFO L470 AbstractCegarLoop]: Abstraction has 21238 states and 31761 transitions. [2021-12-18 04:15:55,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 04:15:55,132 INFO L276 IsEmpty]: Start isEmpty. Operand 21238 states and 31761 transitions. [2021-12-18 04:15:55,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-18 04:15:55,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:15:55,138 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:15:55,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 04:15:55,138 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:15:55,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:15:55,139 INFO L85 PathProgramCache]: Analyzing trace with hash 983359405, now seen corresponding path program 1 times [2021-12-18 04:15:55,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:15:55,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551903082] [2021-12-18 04:15:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:55,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:15:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:15:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:15:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:15:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:15:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:15:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 04:15:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:15:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 04:15:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 04:15:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 04:15:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:15:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:15:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-12-18 04:15:55,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:15:55,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551903082] [2021-12-18 04:15:55,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551903082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:15:55,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:15:55,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-18 04:15:55,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222461190] [2021-12-18 04:15:55,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:15:55,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 04:15:55,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:15:55,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 04:15:55,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:15:55,750 INFO L87 Difference]: Start difference. First operand 21238 states and 31761 transitions. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 8 states have internal predecessors, (97), 3 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:16:05,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:16:05,157 INFO L93 Difference]: Finished difference Result 50529 states and 80380 transitions. [2021-12-18 04:16:05,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 04:16:05,158 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 8 states have internal predecessors, (97), 3 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) Word has length 183 [2021-12-18 04:16:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:16:05,331 INFO L225 Difference]: With dead ends: 50529 [2021-12-18 04:16:05,332 INFO L226 Difference]: Without dead ends: 29311 [2021-12-18 04:16:05,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-12-18 04:16:05,565 INFO L933 BasicCegarLoop]: 3070 mSDtfsCounter, 2205 mSDsluCounter, 23763 mSDsCounter, 0 mSdLazyCounter, 9914 mSolverCounterSat, 1590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2444 SdHoareTripleChecker+Valid, 26833 SdHoareTripleChecker+Invalid, 11504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1590 IncrementalHoareTripleChecker+Valid, 9914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-12-18 04:16:05,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2444 Valid, 26833 Invalid, 11504 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1590 Valid, 9914 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-12-18 04:16:05,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29311 states. [2021-12-18 04:16:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29311 to 21240. [2021-12-18 04:16:06,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21240 states, 14968 states have (on average 1.345938001068947) internal successors, (20146), 15649 states have internal predecessors, (20146), 4756 states have call successors, (4756), 1272 states have call predecessors, (4756), 1515 states have return successors, (6801), 4775 states have call predecessors, (6801), 4755 states have call successors, (6801) [2021-12-18 04:16:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21240 states to 21240 states and 31703 transitions. [2021-12-18 04:16:06,436 INFO L78 Accepts]: Start accepts. Automaton has 21240 states and 31703 transitions. Word has length 183 [2021-12-18 04:16:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:16:06,437 INFO L470 AbstractCegarLoop]: Abstraction has 21240 states and 31703 transitions. [2021-12-18 04:16:06,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 8 states have internal predecessors, (97), 3 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:16:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 21240 states and 31703 transitions. [2021-12-18 04:16:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-18 04:16:06,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:16:06,443 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:16:06,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 04:16:06,444 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:16:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:16:06,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1360301419, now seen corresponding path program 1 times [2021-12-18 04:16:06,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:16:06,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372651594] [2021-12-18 04:16:06,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:16:06,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:16:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:16:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:16:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:16:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:16:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:16:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:16:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 04:16:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:16:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 04:16:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 04:16:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 04:16:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:16:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:16:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:16:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:16:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2021-12-18 04:16:06,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:16:06,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372651594] [2021-12-18 04:16:06,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372651594] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:16:06,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205132910] [2021-12-18 04:16:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:16:06,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:16:06,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:16:06,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:16:06,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 04:16:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:07,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 04:16:07,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:16:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-12-18 04:16:07,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:16:07,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205132910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:16:07,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:16:07,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-18 04:16:07,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505561951] [2021-12-18 04:16:07,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:16:07,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 04:16:07,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:16:07,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 04:16:07,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-18 04:16:07,928 INFO L87 Difference]: Start difference. First operand 21240 states and 31703 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-18 04:16:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:16:08,573 INFO L93 Difference]: Finished difference Result 42539 states and 63469 transitions. [2021-12-18 04:16:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 04:16:08,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 189 [2021-12-18 04:16:08,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:16:08,709 INFO L225 Difference]: With dead ends: 42539 [2021-12-18 04:16:08,710 INFO L226 Difference]: Without dead ends: 21257 [2021-12-18 04:16:08,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-18 04:16:08,796 INFO L933 BasicCegarLoop]: 3333 mSDtfsCounter, 2946 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 3643 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 [2021-12-18 04:16:08,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2946 Valid, 3643 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 04:16:08,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21257 states. [2021-12-18 04:16:09,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21257 to 21236. [2021-12-18 04:16:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21236 states, 14965 states have (on average 1.3464751085867024) internal successors, (20150), 15648 states have internal predecessors, (20150), 4748 states have call successors, (4748), 1279 states have call predecessors, (4748), 1522 states have return successors, (6767), 4767 states have call predecessors, (6767), 4747 states have call successors, (6767) [2021-12-18 04:16:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21236 states to 21236 states and 31665 transitions. [2021-12-18 04:16:09,749 INFO L78 Accepts]: Start accepts. Automaton has 21236 states and 31665 transitions. Word has length 189 [2021-12-18 04:16:09,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:16:09,750 INFO L470 AbstractCegarLoop]: Abstraction has 21236 states and 31665 transitions. [2021-12-18 04:16:09,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-18 04:16:09,750 INFO L276 IsEmpty]: Start isEmpty. Operand 21236 states and 31665 transitions. [2021-12-18 04:16:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-18 04:16:09,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:16:09,758 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:16:09,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 04:16:09,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-18 04:16:09,972 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:16:09,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:16:09,972 INFO L85 PathProgramCache]: Analyzing trace with hash 596492432, now seen corresponding path program 1 times [2021-12-18 04:16:09,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:16:09,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853079238] [2021-12-18 04:16:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:16:09,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:16:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:16:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:16:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:16:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:16:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:16:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:16:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 04:16:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:16:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 04:16:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 04:16:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 04:16:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:10,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:16:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:11,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:11,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:11,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:16:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:11,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:11,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:11,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:16:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:11,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:16:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:11,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 04:16:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 04:16:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:11,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 04:16:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-12-18 04:16:11,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:16:11,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853079238] [2021-12-18 04:16:11,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853079238] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:16:11,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420236738] [2021-12-18 04:16:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:16:11,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:16:11,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:16:11,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:16:11,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 04:16:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:12,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 2805 conjuncts, 116 conjunts are in the unsatisfiable core [2021-12-18 04:16:12,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:16:12,859 INFO L388 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 [2021-12-18 04:16:12,995 INFO L388 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 [2021-12-18 04:16:13,086 INFO L388 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 [2021-12-18 04:16:13,168 INFO L388 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 [2021-12-18 04:16:13,258 INFO L388 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 [2021-12-18 04:16:13,346 INFO L388 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 [2021-12-18 04:16:13,434 INFO L388 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 [2021-12-18 04:16:13,523 INFO L388 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 [2021-12-18 04:16:13,719 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 04:16:13,720 INFO L388 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 [2021-12-18 04:16:13,889 INFO L388 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 [2021-12-18 04:16:13,905 INFO L388 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 [2021-12-18 04:16:14,154 INFO L388 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 [2021-12-18 04:16:14,164 INFO L388 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 [2021-12-18 04:16:14,337 INFO L388 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 [2021-12-18 04:16:14,747 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 04:16:14,747 INFO L388 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 [2021-12-18 04:16:14,833 INFO L388 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 [2021-12-18 04:16:15,038 INFO L388 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 [2021-12-18 04:16:15,350 INFO L388 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 [2021-12-18 04:16:15,357 INFO L388 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 [2021-12-18 04:16:15,459 INFO L388 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 [2021-12-18 04:16:15,463 INFO L388 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 [2021-12-18 04:16:15,545 INFO L388 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 [2021-12-18 04:16:15,548 INFO L388 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 [2021-12-18 04:16:16,343 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 04:16:16,343 INFO L388 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 [2021-12-18 04:16:16,347 INFO L388 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 [2021-12-18 04:16:16,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 04:16:16,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 04:16:16,711 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 04:16:16,711 INFO L388 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 [2021-12-18 04:16:16,726 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 04:16:16,727 INFO L388 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 [2021-12-18 04:16:16,914 INFO L388 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 [2021-12-18 04:16:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-12-18 04:16:16,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:16:17,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420236738] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:16:17,401 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 04:16:17,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21] total 44 [2021-12-18 04:16:17,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710981192] [2021-12-18 04:16:17,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 04:16:17,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-18 04:16:17,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:16:17,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-18 04:16:17,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1913, Unknown=13, NotChecked=0, Total=2070 [2021-12-18 04:16:17,403 INFO L87 Difference]: Start difference. First operand 21236 states and 31665 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) [2021-12-18 04:16:42,465 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 [] [2021-12-18 04:20:34,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:20:34,340 INFO L93 Difference]: Finished difference Result 66076 states and 106631 transitions. [2021-12-18 04:20:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-12-18 04:20:34,341 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 203 [2021-12-18 04:20:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:20:34,685 INFO L225 Difference]: With dead ends: 66076 [2021-12-18 04:20:34,685 INFO L226 Difference]: Without dead ends: 66056 [2021-12-18 04:20:34,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 290 SyntacticMatches, 5 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18632 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=3817, Invalid=46545, Unknown=38, NotChecked=0, Total=50400 [2021-12-18 04:20:34,746 INFO L933 BasicCegarLoop]: 3048 mSDtfsCounter, 21407 mSDsluCounter, 15325 mSDsCounter, 0 mSdLazyCounter, 116997 mSolverCounterSat, 14845 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21812 SdHoareTripleChecker+Valid, 18373 SdHoareTripleChecker+Invalid, 229616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.8s SdHoareTripleChecker+Time, 14845 IncrementalHoareTripleChecker+Valid, 116997 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 97773 IncrementalHoareTripleChecker+Unchecked, 233.2s IncrementalHoareTripleChecker+Time [2021-12-18 04:20:34,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21812 Valid, 18373 Invalid, 229616 Unknown, 0 Unchecked, 0.8s Time], IncrementalHoareTripleChecker [14845 Valid, 116997 Invalid, 1 Unknown, 97773 Unchecked, 233.2s Time] [2021-12-18 04:20:34,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66056 states. [2021-12-18 04:20:37,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66056 to 52348. [2021-12-18 04:20:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52348 states, 37225 states have (on average 1.3565345869711216) internal successors, (50497), 38960 states have internal predecessors, (50497), 11520 states have call successors, (11520), 2816 states have call predecessors, (11520), 3602 states have return successors, (19099), 11679 states have call predecessors, (19099), 11519 states have call successors, (19099) [2021-12-18 04:20:37,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52348 states to 52348 states and 81116 transitions. [2021-12-18 04:20:37,739 INFO L78 Accepts]: Start accepts. Automaton has 52348 states and 81116 transitions. Word has length 203 [2021-12-18 04:20:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:20:37,740 INFO L470 AbstractCegarLoop]: Abstraction has 52348 states and 81116 transitions. [2021-12-18 04:20:37,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-12-18 04:20:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand 52348 states and 81116 transitions. [2021-12-18 04:20:37,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-18 04:20:37,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:20:37,762 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 04:20:37,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 04:20:37,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-18 04:20:37,988 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:20:37,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:20:37,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1022663444, now seen corresponding path program 2 times [2021-12-18 04:20:37,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:20:37,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397239501] [2021-12-18 04:20:37,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:20:37,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:20:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:20:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:20:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:20:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:20:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:20:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:20:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:20:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:20:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:20:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:20:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:20:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:20:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 04:20:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 04:20:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 04:20:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 04:20:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:20:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 04:20:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:38,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-18 04:20:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:39,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:20:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:20:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:39,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:20:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:40,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:20:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:40,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:20:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:40,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:20:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:40,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:20:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:20:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:40,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-18 04:20:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:40,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-18 04:20:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:40,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 04:20:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:20:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 9 proven. 126 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-12-18 04:20:40,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:20:40,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397239501] [2021-12-18 04:20:40,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397239501] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:20:40,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217749672] [2021-12-18 04:20:40,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 04:20:40,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:20:40,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:20:40,149 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) [2021-12-18 04:20:40,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 04:20:40,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 04:20:40,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 04:20:40,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-18 04:20:40,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:20:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 41 proven. 3 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-12-18 04:20:42,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:20:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-12-18 04:20:43,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217749672] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:20:43,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:20:43,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 16, 14] total 55 [2021-12-18 04:20:43,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463727040] [2021-12-18 04:20:43,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:20:43,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-18 04:20:43,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:20:43,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-18 04:20:43,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2802, Unknown=0, NotChecked=0, Total=2970 [2021-12-18 04:20:43,950 INFO L87 Difference]: Start difference. First operand 52348 states and 81116 transitions. Second operand has 55 states, 54 states have (on average 4.2592592592592595) internal successors, (230), 38 states have internal predecessors, (230), 14 states have call successors, (61), 7 states have call predecessors, (61), 17 states have return successors, (63), 22 states have call predecessors, (63), 14 states have call successors, (63) [2021-12-18 04:21:05,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:07,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:09,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:11,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:13,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:15,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:19,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:21,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:23,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:25,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:24:15,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:24:15,000 INFO L93 Difference]: Finished difference Result 117941 states and 189361 transitions. [2021-12-18 04:24:15,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-12-18 04:24:15,005 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 4.2592592592592595) internal successors, (230), 38 states have internal predecessors, (230), 14 states have call successors, (61), 7 states have call predecessors, (61), 17 states have return successors, (63), 22 states have call predecessors, (63), 14 states have call successors, (63) Word has length 224 [2021-12-18 04:24:15,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:24:15,525 INFO L225 Difference]: With dead ends: 117941 [2021-12-18 04:24:15,525 INFO L226 Difference]: Without dead ends: 67709 [2021-12-18 04:24:15,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 490 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4642 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=1723, Invalid=17183, Unknown=0, NotChecked=0, Total=18906 [2021-12-18 04:24:15,683 INFO L933 BasicCegarLoop]: 2901 mSDtfsCounter, 9850 mSDsluCounter, 25112 mSDsCounter, 0 mSdLazyCounter, 115089 mSolverCounterSat, 6169 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10157 SdHoareTripleChecker+Valid, 28013 SdHoareTripleChecker+Invalid, 121268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 6169 IncrementalHoareTripleChecker+Valid, 115089 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 195.1s IncrementalHoareTripleChecker+Time [2021-12-18 04:24:15,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10157 Valid, 28013 Invalid, 121268 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [6169 Valid, 115089 Invalid, 10 Unknown, 0 Unchecked, 195.1s Time] [2021-12-18 04:24:15,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67709 states. [2021-12-18 04:24:18,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67709 to 52801. [2021-12-18 04:24:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52801 states, 37451 states have (on average 1.3522736375530693) internal successors, (50644), 39209 states have internal predecessors, (50644), 11724 states have call successors, (11724), 2786 states have call predecessors, (11724), 3625 states have return successors, (19807), 11906 states have call predecessors, (19807), 11723 states have call successors, (19807) [2021-12-18 04:24:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52801 states to 52801 states and 82175 transitions. [2021-12-18 04:24:18,663 INFO L78 Accepts]: Start accepts. Automaton has 52801 states and 82175 transitions. Word has length 224 [2021-12-18 04:24:18,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:24:18,664 INFO L470 AbstractCegarLoop]: Abstraction has 52801 states and 82175 transitions. [2021-12-18 04:24:18,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 4.2592592592592595) internal successors, (230), 38 states have internal predecessors, (230), 14 states have call successors, (61), 7 states have call predecessors, (61), 17 states have return successors, (63), 22 states have call predecessors, (63), 14 states have call successors, (63) [2021-12-18 04:24:18,664 INFO L276 IsEmpty]: Start isEmpty. Operand 52801 states and 82175 transitions. [2021-12-18 04:24:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-18 04:24:18,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:24:18,928 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:24:18,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 04:24:19,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:24:19,149 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:24:19,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:24:19,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1026021521, now seen corresponding path program 1 times [2021-12-18 04:24:19,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:24:19,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645222513] [2021-12-18 04:24:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:24:19,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:24:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:24:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:24:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:24:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:24:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:24:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:24:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:24:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:24:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:24:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 04:24:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:24:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 04:24:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:24:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 04:24:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 04:24:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:24:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:24:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:24:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:24:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:24:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:24:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:24:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:24:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:24:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:24:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:24:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 04:24:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-18 04:24:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-18 04:24:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-12-18 04:24:19,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:24:19,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645222513] [2021-12-18 04:24:19,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645222513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:24:19,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:24:19,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 04:24:19,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010571551] [2021-12-18 04:24:19,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:24:19,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 04:24:19,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:24:19,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 04:24:19,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-18 04:24:19,503 INFO L87 Difference]: Start difference. First operand 52801 states and 82175 transitions. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (30), 9 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 04:24:37,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:24:37,516 INFO L93 Difference]: Finished difference Result 91640 states and 153092 transitions. [2021-12-18 04:24:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 04:24:37,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (30), 9 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 218 [2021-12-18 04:24:37,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:24:37,891 INFO L225 Difference]: With dead ends: 91640 [2021-12-18 04:24:37,891 INFO L226 Difference]: Without dead ends: 65789 [2021-12-18 04:24:38,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-12-18 04:24:38,049 INFO L933 BasicCegarLoop]: 2632 mSDtfsCounter, 7853 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 9672 mSolverCounterSat, 5794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8157 SdHoareTripleChecker+Valid, 4745 SdHoareTripleChecker+Invalid, 15466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5794 IncrementalHoareTripleChecker+Valid, 9672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:24:38,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8157 Valid, 4745 Invalid, 15466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5794 Valid, 9672 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2021-12-18 04:24:38,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65789 states. [2021-12-18 04:24:40,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65789 to 52825. [2021-12-18 04:24:40,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52825 states, 37475 states have (on average 1.3520480320213475) internal successors, (50668), 39233 states have internal predecessors, (50668), 11724 states have call successors, (11724), 2786 states have call predecessors, (11724), 3625 states have return successors, (19807), 11906 states have call predecessors, (19807), 11723 states have call successors, (19807) [2021-12-18 04:24:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52825 states to 52825 states and 82199 transitions. [2021-12-18 04:24:41,016 INFO L78 Accepts]: Start accepts. Automaton has 52825 states and 82199 transitions. Word has length 218 [2021-12-18 04:24:41,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:24:41,017 INFO L470 AbstractCegarLoop]: Abstraction has 52825 states and 82199 transitions. [2021-12-18 04:24:41,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (30), 9 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 04:24:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand 52825 states and 82199 transitions. [2021-12-18 04:24:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-12-18 04:24:41,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:24:41,055 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:24:41,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 04:24:41,055 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:24:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:24:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash 928948464, now seen corresponding path program 1 times [2021-12-18 04:24:41,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:24:41,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919237291] [2021-12-18 04:24:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:24:41,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:24:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:24:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:24:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:24:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:24:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:24:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:24:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:24:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:24:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:24:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 04:24:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:24:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 04:24:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:24:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 04:24:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 04:24:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:24:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:24:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:24:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:24:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:24:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:24:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:24:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:24:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:24:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:24:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:24:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-18 04:24:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-18 04:24:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 04:24:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:24:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-12-18 04:24:41,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:24:41,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919237291] [2021-12-18 04:24:41,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919237291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:24:41,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:24:41,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-18 04:24:41,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319391782] [2021-12-18 04:24:41,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:24:41,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 04:24:41,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:24:41,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 04:24:41,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-12-18 04:24:41,792 INFO L87 Difference]: Start difference. First operand 52825 states and 82199 transitions. Second operand has 15 states, 15 states have (on average 8.4) internal successors, (126), 8 states have internal predecessors, (126), 4 states have call successors, (30), 9 states have call predecessors, (30), 4 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-18 04:25:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:25:38,104 INFO L93 Difference]: Finished difference Result 157843 states and 269520 transitions. [2021-12-18 04:25:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-18 04:25:38,107 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 8 states have internal predecessors, (126), 4 states have call successors, (30), 9 states have call predecessors, (30), 4 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) Word has length 220 [2021-12-18 04:25:38,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:25:39,209 INFO L225 Difference]: With dead ends: 157843 [2021-12-18 04:25:39,209 INFO L226 Difference]: Without dead ends: 108415 [2021-12-18 04:25:39,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2021-12-18 04:25:39,586 INFO L933 BasicCegarLoop]: 4478 mSDtfsCounter, 27169 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 39299 mSolverCounterSat, 23268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27476 SdHoareTripleChecker+Valid, 6810 SdHoareTripleChecker+Invalid, 62567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 23268 IncrementalHoareTripleChecker+Valid, 39299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.8s IncrementalHoareTripleChecker+Time [2021-12-18 04:25:39,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27476 Valid, 6810 Invalid, 62567 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [23268 Valid, 39299 Invalid, 0 Unknown, 0 Unchecked, 48.8s Time] [2021-12-18 04:25:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108415 states. [2021-12-18 04:25:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108415 to 83037. [2021-12-18 04:25:44,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83037 states, 58768 states have (on average 1.3490675197386333) internal successors, (79282), 61548 states have internal predecessors, (79282), 18873 states have call successors, (18873), 3942 states have call predecessors, (18873), 5395 states have return successors, (37140), 19431 states have call predecessors, (37140), 18872 states have call successors, (37140) [2021-12-18 04:25:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83037 states to 83037 states and 135295 transitions. [2021-12-18 04:25:45,500 INFO L78 Accepts]: Start accepts. Automaton has 83037 states and 135295 transitions. Word has length 220 [2021-12-18 04:25:45,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:25:45,501 INFO L470 AbstractCegarLoop]: Abstraction has 83037 states and 135295 transitions. [2021-12-18 04:25:45,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 8 states have internal predecessors, (126), 4 states have call successors, (30), 9 states have call predecessors, (30), 4 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-18 04:25:45,501 INFO L276 IsEmpty]: Start isEmpty. Operand 83037 states and 135295 transitions. [2021-12-18 04:25:45,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-12-18 04:25:45,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:25:45,527 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:25:45,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 04:25:45,527 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:25:45,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:25:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1812775508, now seen corresponding path program 1 times [2021-12-18 04:25:45,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:25:45,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756133496] [2021-12-18 04:25:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:25:45,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:25:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:45,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:25:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:25:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:25:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:25:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:25:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:25:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:25:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:25:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:25:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 04:25:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:25:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 04:25:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:25:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 04:25:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 04:25:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:46,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:25:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:25:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:25:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:25:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:25:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:25:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:25:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:25:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:25:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 04:25:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 04:25:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:25:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:25:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:25:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 04:25:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-18 04:25:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-12-18 04:25:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-18 04:25:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-12-18 04:25:48,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:25:48,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756133496] [2021-12-18 04:25:48,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756133496] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:25:48,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577166162] [2021-12-18 04:25:48,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:25:48,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:25:48,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:25:48,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:25:48,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 04:25:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:25:49,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 3013 conjuncts, 137 conjunts are in the unsatisfiable core [2021-12-18 04:25:49,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:25:49,301 INFO L388 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 [2021-12-18 04:25:49,439 INFO L388 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 [2021-12-18 04:25:49,525 INFO L388 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 [2021-12-18 04:25:49,604 INFO L388 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 [2021-12-18 04:25:49,698 INFO L388 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 [2021-12-18 04:25:49,776 INFO L388 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 [2021-12-18 04:25:49,858 INFO L388 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 [2021-12-18 04:25:49,948 INFO L388 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 [2021-12-18 04:25:50,141 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 04:25:50,142 INFO L388 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 [2021-12-18 04:25:50,305 INFO L388 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 [2021-12-18 04:25:50,320 INFO L388 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 [2021-12-18 04:25:50,466 INFO L388 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 [2021-12-18 04:25:50,488 INFO L388 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 [2021-12-18 04:25:50,707 INFO L388 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 [2021-12-18 04:25:51,190 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 04:25:51,190 INFO L388 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 [2021-12-18 04:25:51,309 INFO L388 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 [2021-12-18 04:25:51,610 INFO L388 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 [2021-12-18 04:25:52,031 INFO L388 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 [2021-12-18 04:25:52,035 INFO L388 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 [2021-12-18 04:25:52,119 INFO L388 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 [2021-12-18 04:25:52,123 INFO L388 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 [2021-12-18 04:25:52,206 INFO L388 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 [2021-12-18 04:25:52,210 INFO L388 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 [2021-12-18 04:25:53,471 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 04:25:53,471 INFO L388 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 [2021-12-18 04:25:53,476 INFO L388 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 [2021-12-18 04:25:54,349 INFO L388 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 [2021-12-18 04:25:54,801 INFO L388 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 [2021-12-18 04:25:55,177 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 04:25:55,177 INFO L388 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 12 treesize of output 15 [2021-12-18 04:25:55,183 INFO L388 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 [2021-12-18 04:25:55,382 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 04:25:55,382 INFO L388 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 12 treesize of output 15 [2021-12-18 04:25:55,386 INFO L388 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 [2021-12-18 04:25:55,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 04:25:55,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 04:25:55,637 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 04:25:55,638 INFO L388 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 [2021-12-18 04:25:55,652 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 04:25:55,652 INFO L388 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 [2021-12-18 04:25:55,924 INFO L388 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 [2021-12-18 04:25:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-12-18 04:25:55,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:25:56,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577166162] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:25:56,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 04:25:56,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28] total 59 [2021-12-18 04:25:56,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381457611] [2021-12-18 04:25:56,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 04:25:56,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-12-18 04:25:56,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:25:56,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-12-18 04:25:56,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=3336, Unknown=57, NotChecked=0, Total=3660 [2021-12-18 04:25:56,640 INFO L87 Difference]: Start difference. First operand 83037 states and 135295 transitions. Second operand has 59 states, 59 states have (on average 4.559322033898305) internal successors, (269), 45 states have internal predecessors, (269), 21 states have call successors, (66), 14 states have call predecessors, (66), 22 states have return successors, (65), 26 states have call predecessors, (65), 21 states have call successors, (65) [2021-12-18 04:26:12,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:26:14,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:26:16,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15