./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 35987657 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-?-3598765 [2022-07-21 11:08:45,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:08:45,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:08:45,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:08:45,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:08:45,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:08:45,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:08:45,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:08:45,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:08:45,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:08:45,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:08:45,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:08:45,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:08:45,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:08:45,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:08:45,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:08:45,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:08:45,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:08:45,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:08:45,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:08:45,572 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:08:45,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:08:45,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:08:45,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:08:45,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:08:45,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:08:45,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:08:45,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:08:45,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:08:45,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:08:45,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:08:45,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:08:45,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:08:45,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:08:45,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:08:45,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:08:45,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:08:45,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:08:45,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:08:45,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:08:45,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:08:45,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:08:45,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:08:45,604 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:08:45,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:08:45,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:08:45,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:08:45,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:08:45,605 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:08:45,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:08:45,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:08:45,606 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:08:45,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:08:45,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:08:45,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:08:45,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:08:45,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:08:45,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:08:45,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:08:45,613 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:08:45,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:08:45,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:08:45,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:08:45,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:08:45,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:08:45,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:08:45,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:08:45,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:08:45,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:08:45,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:08:45,615 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:08:45,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:08:45,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:08:45,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 [2022-07-21 11:08:45,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:08:45,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:08:45,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:08:45,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:08:45,903 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:08:45,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2022-07-21 11:08:45,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37bc19d59/8496b41fad1041108a0963e2a6f22118/FLAGbf3f648eb [2022-07-21 11:08:46,677 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:08:46,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2022-07-21 11:08:46,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37bc19d59/8496b41fad1041108a0963e2a6f22118/FLAGbf3f648eb [2022-07-21 11:08:46,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37bc19d59/8496b41fad1041108a0963e2a6f22118 [2022-07-21 11:08:46,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:08:46,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:08:46,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:08:46,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:08:46,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:08:46,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:08:46" (1/1) ... [2022-07-21 11:08:46,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376f5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:46, skipping insertion in model container [2022-07-21 11:08:46,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:08:46" (1/1) ... [2022-07-21 11:08:46,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:08:47,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:08:48,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[198800,198813] [2022-07-21 11:08:49,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:08:49,143 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:08:49,303 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[198800,198813] [2022-07-21 11:08:49,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:08:49,621 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:08:49,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:49 WrapperNode [2022-07-21 11:08:49,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:08:49,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:08:49,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:08:49,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:08:49,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:49" (1/1) ... [2022-07-21 11:08:49,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:49" (1/1) ... [2022-07-21 11:08:49,927 INFO L137 Inliner]: procedures = 375, calls = 2229, calls flagged for inlining = 193, calls inlined = 191, statements flattened = 6492 [2022-07-21 11:08:49,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:08:49,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:08:49,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:08:49,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:08:49,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:49" (1/1) ... [2022-07-21 11:08:49,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:49" (1/1) ... [2022-07-21 11:08:49,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:49" (1/1) ... [2022-07-21 11:08:49,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:49" (1/1) ... [2022-07-21 11:08:50,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:49" (1/1) ... [2022-07-21 11:08:50,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:49" (1/1) ... [2022-07-21 11:08:50,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:49" (1/1) ... [2022-07-21 11:08:50,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:08:50,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:08:50,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:08:50,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:08:50,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:49" (1/1) ... [2022-07-21 11:08:50,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:08:50,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:08:50,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 11:08:50,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 11:08:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_destroy [2022-07-21 11:08:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_destroy [2022-07-21 11:08:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2022-07-21 11:08:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2022-07-21 11:08:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-21 11:08:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-21 11:08:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2022-07-21 11:08:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2022-07-21 11:08:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-21 11:08:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2022-07-21 11:08:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2022-07-21 11:08:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 11:08:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 11:08:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:08:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:08:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-21 11:08:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-21 11:08:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-21 11:08:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-21 11:08:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2022-07-21 11:08:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2022-07-21 11:08:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2022-07-21 11:08:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2022-07-21 11:08:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2022-07-21 11:08:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2022-07-21 11:08:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2022-07-21 11:08:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2022-07-21 11:08:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-21 11:08:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-21 11:08:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-21 11:08:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-21 11:08:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-21 11:08:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-21 11:08:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:08:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:08:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2022-07-21 11:08:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2022-07-21 11:08:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2022-07-21 11:08:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2022-07-21 11:08:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-21 11:08:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-21 11:08:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2022-07-21 11:08:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2022-07-21 11:08:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 11:08:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 11:08:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2022-07-21 11:08:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2022-07-21 11:08:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:08:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:08:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2022-07-21 11:08:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2022-07-21 11:08:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-21 11:08:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-21 11:08:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 11:08:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 11:08:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2022-07-21 11:08:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2022-07-21 11:08:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:08:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:08:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-21 11:08:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-21 11:08:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 11:08:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 11:08:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2022-07-21 11:08:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2022-07-21 11:08:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_19 [2022-07-21 11:08:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_19 [2022-07-21 11:08:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2022-07-21 11:08:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2022-07-21 11:08:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2022-07-21 11:08:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2022-07-21 11:08:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:08:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-21 11:08:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-21 11:08:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-07-21 11:08:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-07-21 11:08:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-07-21 11:08:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-07-21 11:08:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:08:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-21 11:08:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-21 11:08:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_get_stats64 [2022-07-21 11:08:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_get_stats64 [2022-07-21 11:08:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-07-21 11:08:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-07-21 11:08:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-07-21 11:08:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-07-21 11:08:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2022-07-21 11:08:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2022-07-21 11:08:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-21 11:08:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-21 11:08:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:08:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:08:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_error [2022-07-21 11:08:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_error [2022-07-21 11:08:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2022-07-21 11:08:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2022-07-21 11:08:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-21 11:08:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-21 11:08:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-21 11:08:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-21 11:08:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_create [2022-07-21 11:08:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_create [2022-07-21 11:08:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 11:08:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 11:08:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-21 11:08:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-21 11:08:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2022-07-21 11:08:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2022-07-21 11:08:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-21 11:08:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-21 11:08:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-21 11:08:50,414 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-21 11:08:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-21 11:08:50,414 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-21 11:08:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2022-07-21 11:08:50,414 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2022-07-21 11:08:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2022-07-21 11:08:50,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2022-07-21 11:08:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-21 11:08:50,456 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-21 11:08:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-21 11:08:50,456 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-21 11:08:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 11:08:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 11:08:50,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 11:08:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-21 11:08:50,456 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-21 11:08:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2022-07-21 11:08:50,456 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2022-07-21 11:08:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 11:08:50,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 11:08:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2022-07-21 11:08:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2022-07-21 11:08:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_net_ioctl [2022-07-21 11:08:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_net_ioctl [2022-07-21 11:08:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 11:08:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2022-07-21 11:08:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2022-07-21 11:08:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-21 11:08:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-21 11:08:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 11:08:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-21 11:08:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-21 11:08:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-07-21 11:08:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-07-21 11:08:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2022-07-21 11:08:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2022-07-21 11:08:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2022-07-21 11:08:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2022-07-21 11:08:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-07-21 11:08:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-07-21 11:08:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-21 11:08:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-21 11:08:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2022-07-21 11:08:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2022-07-21 11:08:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_do_recv [2022-07-21 11:08:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_do_recv [2022-07-21 11:08:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2022-07-21 11:08:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2022-07-21 11:08:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2022-07-21 11:08:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2022-07-21 11:08:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_16 [2022-07-21 11:08:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_16 [2022-07-21 11:08:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-07-21 11:08:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-07-21 11:08:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2022-07-21 11:08:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2022-07-21 11:08:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2022-07-21 11:08:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2022-07-21 11:08:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-21 11:08:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-21 11:08:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 11:08:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 11:08:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2022-07-21 11:08:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2022-07-21 11:08:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_nonmp_frame [2022-07-21 11:08:50,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_nonmp_frame [2022-07-21 11:08:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2022-07-21 11:08:50,478 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2022-07-21 11:08:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 11:08:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-21 11:08:50,478 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-21 11:08:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-21 11:08:50,478 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-21 11:08:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-07-21 11:08:50,478 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-07-21 11:08:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_write [2022-07-21 11:08:50,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_write [2022-07-21 11:08:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:08:50,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:08:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2022-07-21 11:08:50,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2022-07-21 11:08:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2022-07-21 11:08:50,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2022-07-21 11:08:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:08:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-21 11:08:50,479 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-21 11:08:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-21 11:08:50,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-21 11:08:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:08:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-21 11:08:50,479 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-21 11:08:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:08:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-07-21 11:08:50,479 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-07-21 11:08:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 11:08:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2022-07-21 11:08:50,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2022-07-21 11:08:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 11:08:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 11:08:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-07-21 11:08:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-07-21 11:08:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-07-21 11:08:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-07-21 11:08:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2022-07-21 11:08:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2022-07-21 11:08:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-07-21 11:08:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-07-21 11:08:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-21 11:08:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-21 11:08:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-21 11:08:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-21 11:08:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2022-07-21 11:08:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2022-07-21 11:08:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-07-21 11:08:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-07-21 11:08:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-21 11:08:50,481 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-21 11:08:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-21 11:08:50,481 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-21 11:08:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_net_channel [2022-07-21 11:08:50,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_net_channel [2022-07-21 11:08:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-21 11:08:50,481 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-21 11:08:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2022-07-21 11:08:50,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2022-07-21 11:08:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2022-07-21 11:08:50,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2022-07-21 11:08:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 11:08:50,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 11:08:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2022-07-21 11:08:50,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2022-07-21 11:08:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2022-07-21 11:08:50,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2022-07-21 11:08:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_44 [2022-07-21 11:08:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_44 [2022-07-21 11:08:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_poll [2022-07-21 11:08:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_poll [2022-07-21 11:08:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 11:08:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2022-07-21 11:08:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2022-07-21 11:08:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-21 11:08:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-21 11:08:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:08:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:08:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-21 11:08:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-21 11:08:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-21 11:08:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-21 11:08:51,110 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:08:51,114 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:08:51,538 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:08:53,804 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:08:53,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:08:53,817 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-21 11:08:53,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:08:53 BoogieIcfgContainer [2022-07-21 11:08:53,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:08:53,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:08:53,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:08:53,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:08:53,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:08:46" (1/3) ... [2022-07-21 11:08:53,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46905ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:08:53, skipping insertion in model container [2022-07-21 11:08:53,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:49" (2/3) ... [2022-07-21 11:08:53,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46905ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:08:53, skipping insertion in model container [2022-07-21 11:08:53,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:08:53" (3/3) ... [2022-07-21 11:08:53,826 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2022-07-21 11:08:53,836 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:08:53,836 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:08:53,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:08:53,894 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4f12219c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@21719bfd [2022-07-21 11:08:53,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:08:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 2188 states, 1551 states have (on average 1.3836234687298516) internal successors, (2146), 1610 states have internal predecessors, (2146), 515 states have call successors, (515), 121 states have call predecessors, (515), 120 states have return successors, (510), 497 states have call predecessors, (510), 510 states have call successors, (510) [2022-07-21 11:08:53,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 11:08:53,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:08:53,914 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:08:53,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:08:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:08:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1665950622, now seen corresponding path program 1 times [2022-07-21 11:08:53,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:08:53,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332698989] [2022-07-21 11:08:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:08:53,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:08:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:08:54,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:08:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:08:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:08:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:08:54,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:08:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:08:54,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:08:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:08:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:08:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:08:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:08:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:08:54,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:08:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:08:54,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:08:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:08:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 11:08:54,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:08:54,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332698989] [2022-07-21 11:08:54,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332698989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:08:54,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:08:54,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:08:54,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080782269] [2022-07-21 11:08:54,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:08:54,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:08:54,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:08:54,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:08:54,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:08:54,435 INFO L87 Difference]: Start difference. First operand has 2188 states, 1551 states have (on average 1.3836234687298516) internal successors, (2146), 1610 states have internal predecessors, (2146), 515 states have call successors, (515), 121 states have call predecessors, (515), 120 states have return successors, (510), 497 states have call predecessors, (510), 510 states have call successors, (510) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-21 11:09:02,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:02,069 INFO L93 Difference]: Finished difference Result 7161 states and 11104 transitions. [2022-07-21 11:09:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:09:02,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2022-07-21 11:09:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:02,122 INFO L225 Difference]: With dead ends: 7161 [2022-07-21 11:09:02,123 INFO L226 Difference]: Without dead ends: 4931 [2022-07-21 11:09:02,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:09:02,146 INFO L413 NwaCegarLoop]: 3741 mSDtfsCounter, 4566 mSDsluCounter, 8981 mSDsCounter, 0 mSdLazyCounter, 6025 mSolverCounterSat, 1601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4938 SdHoareTripleChecker+Valid, 12722 SdHoareTripleChecker+Invalid, 7626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1601 IncrementalHoareTripleChecker+Valid, 6025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:02,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4938 Valid, 12722 Invalid, 7626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1601 Valid, 6025 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-07-21 11:09:02,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2022-07-21 11:09:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4433. [2022-07-21 11:09:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4433 states, 3151 states have (on average 1.365915582354808) internal successors, (4304), 3264 states have internal predecessors, (4304), 1025 states have call successors, (1025), 239 states have call predecessors, (1025), 256 states have return successors, (1194), 1010 states have call predecessors, (1194), 1024 states have call successors, (1194) [2022-07-21 11:09:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4433 states to 4433 states and 6523 transitions. [2022-07-21 11:09:02,407 INFO L78 Accepts]: Start accepts. Automaton has 4433 states and 6523 transitions. Word has length 69 [2022-07-21 11:09:02,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:02,408 INFO L495 AbstractCegarLoop]: Abstraction has 4433 states and 6523 transitions. [2022-07-21 11:09:02,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-21 11:09:02,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4433 states and 6523 transitions. [2022-07-21 11:09:02,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-21 11:09:02,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:02,423 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:02,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 11:09:02,424 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:02,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:02,424 INFO L85 PathProgramCache]: Analyzing trace with hash 953309695, now seen corresponding path program 1 times [2022-07-21 11:09:02,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:02,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281771709] [2022-07-21 11:09:02,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:02,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 11:09:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:09:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 11:09:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 11:09:02,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:02,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281771709] [2022-07-21 11:09:02,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281771709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:02,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:02,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:09:02,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327243127] [2022-07-21 11:09:02,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:02,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:09:02,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:02,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:09:02,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:09:02,759 INFO L87 Difference]: Start difference. First operand 4433 states and 6523 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 11:09:13,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:13,432 INFO L93 Difference]: Finished difference Result 14739 states and 22490 transitions. [2022-07-21 11:09:13,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:09:13,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-07-21 11:09:13,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:13,515 INFO L225 Difference]: With dead ends: 14739 [2022-07-21 11:09:13,516 INFO L226 Difference]: Without dead ends: 10326 [2022-07-21 11:09:13,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:09:13,542 INFO L413 NwaCegarLoop]: 3719 mSDtfsCounter, 6656 mSDsluCounter, 5013 mSDsCounter, 0 mSdLazyCounter, 5095 mSolverCounterSat, 3333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6998 SdHoareTripleChecker+Valid, 8732 SdHoareTripleChecker+Invalid, 8428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3333 IncrementalHoareTripleChecker+Valid, 5095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:13,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6998 Valid, 8732 Invalid, 8428 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3333 Valid, 5095 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-07-21 11:09:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10326 states. [2022-07-21 11:09:13,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10326 to 8839. [2022-07-21 11:09:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8839 states, 6245 states have (on average 1.355004003202562) internal successors, (8462), 6489 states have internal predecessors, (8462), 2045 states have call successors, (2045), 467 states have call predecessors, (2045), 548 states have return successors, (2783), 2053 states have call predecessors, (2783), 2044 states have call successors, (2783) [2022-07-21 11:09:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8839 states to 8839 states and 13290 transitions. [2022-07-21 11:09:14,075 INFO L78 Accepts]: Start accepts. Automaton has 8839 states and 13290 transitions. Word has length 105 [2022-07-21 11:09:14,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:14,077 INFO L495 AbstractCegarLoop]: Abstraction has 8839 states and 13290 transitions. [2022-07-21 11:09:14,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 11:09:14,078 INFO L276 IsEmpty]: Start isEmpty. Operand 8839 states and 13290 transitions. [2022-07-21 11:09:14,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 11:09:14,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:14,090 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:14,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 11:09:14,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1261801524, now seen corresponding path program 1 times [2022-07-21 11:09:14,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:14,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493485423] [2022-07-21 11:09:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 11:09:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-21 11:09:14,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:14,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493485423] [2022-07-21 11:09:14,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493485423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:14,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:14,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:09:14,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39802841] [2022-07-21 11:09:14,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:14,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:09:14,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:14,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:09:14,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:09:14,396 INFO L87 Difference]: Start difference. First operand 8839 states and 13290 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 11:09:24,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:24,626 INFO L93 Difference]: Finished difference Result 26650 states and 40851 transitions. [2022-07-21 11:09:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:09:24,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-07-21 11:09:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:24,776 INFO L225 Difference]: With dead ends: 26650 [2022-07-21 11:09:24,776 INFO L226 Difference]: Without dead ends: 17831 [2022-07-21 11:09:24,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:09:24,829 INFO L413 NwaCegarLoop]: 4676 mSDtfsCounter, 4223 mSDsluCounter, 5952 mSDsCounter, 0 mSdLazyCounter, 4963 mSolverCounterSat, 2057 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 10628 SdHoareTripleChecker+Invalid, 7020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2057 IncrementalHoareTripleChecker+Valid, 4963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:24,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 10628 Invalid, 7020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2057 Valid, 4963 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-07-21 11:09:24,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17831 states. [2022-07-21 11:09:25,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17831 to 14968. [2022-07-21 11:09:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14968 states, 10597 states have (on average 1.3512314806077192) internal successors, (14319), 11047 states have internal predecessors, (14319), 3359 states have call successors, (3359), 865 states have call predecessors, (3359), 1011 states have return successors, (4661), 3369 states have call predecessors, (4661), 3358 states have call successors, (4661) [2022-07-21 11:09:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14968 states to 14968 states and 22339 transitions. [2022-07-21 11:09:25,562 INFO L78 Accepts]: Start accepts. Automaton has 14968 states and 22339 transitions. Word has length 108 [2022-07-21 11:09:25,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:25,563 INFO L495 AbstractCegarLoop]: Abstraction has 14968 states and 22339 transitions. [2022-07-21 11:09:25,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 11:09:25,563 INFO L276 IsEmpty]: Start isEmpty. Operand 14968 states and 22339 transitions. [2022-07-21 11:09:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-21 11:09:25,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:25,570 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:25,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 11:09:25,570 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:25,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:25,571 INFO L85 PathProgramCache]: Analyzing trace with hash -599238503, now seen corresponding path program 1 times [2022-07-21 11:09:25,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:25,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247467583] [2022-07-21 11:09:25,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:25,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:09:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:09:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 11:09:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 11:09:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-07-21 11:09:25,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:25,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247467583] [2022-07-21 11:09:25,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247467583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:25,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:25,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:09:25,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937017643] [2022-07-21 11:09:25,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:25,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:09:25,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:25,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:09:25,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:09:25,823 INFO L87 Difference]: Start difference. First operand 14968 states and 22339 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:09:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:33,313 INFO L93 Difference]: Finished difference Result 32759 states and 49872 transitions. [2022-07-21 11:09:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:09:33,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2022-07-21 11:09:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:33,424 INFO L225 Difference]: With dead ends: 32759 [2022-07-21 11:09:33,425 INFO L226 Difference]: Without dead ends: 17811 [2022-07-21 11:09:33,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:09:33,495 INFO L413 NwaCegarLoop]: 2931 mSDtfsCounter, 3944 mSDsluCounter, 3617 mSDsCounter, 0 mSdLazyCounter, 3168 mSolverCounterSat, 1107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4283 SdHoareTripleChecker+Valid, 6548 SdHoareTripleChecker+Invalid, 4275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1107 IncrementalHoareTripleChecker+Valid, 3168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:33,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4283 Valid, 6548 Invalid, 4275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1107 Valid, 3168 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-21 11:09:33,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17811 states. [2022-07-21 11:09:34,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17811 to 14968. [2022-07-21 11:09:34,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14968 states, 10597 states have (on average 1.3504765499669718) internal successors, (14311), 11047 states have internal predecessors, (14311), 3359 states have call successors, (3359), 865 states have call predecessors, (3359), 1011 states have return successors, (4661), 3369 states have call predecessors, (4661), 3358 states have call successors, (4661) [2022-07-21 11:09:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14968 states to 14968 states and 22331 transitions. [2022-07-21 11:09:34,226 INFO L78 Accepts]: Start accepts. Automaton has 14968 states and 22331 transitions. Word has length 142 [2022-07-21 11:09:34,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:34,226 INFO L495 AbstractCegarLoop]: Abstraction has 14968 states and 22331 transitions. [2022-07-21 11:09:34,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:09:34,227 INFO L276 IsEmpty]: Start isEmpty. Operand 14968 states and 22331 transitions. [2022-07-21 11:09:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 11:09:34,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:34,233 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:34,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 11:09:34,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:34,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:34,235 INFO L85 PathProgramCache]: Analyzing trace with hash -410587588, now seen corresponding path program 1 times [2022-07-21 11:09:34,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:34,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409584345] [2022-07-21 11:09:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:34,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:09:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:09:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 11:09:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 11:09:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 11:09:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-21 11:09:34,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:34,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409584345] [2022-07-21 11:09:34,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409584345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:34,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:34,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:09:34,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105179816] [2022-07-21 11:09:34,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:34,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:09:34,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:34,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:09:34,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:09:34,535 INFO L87 Difference]: Start difference. First operand 14968 states and 22331 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 11:09:42,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:42,640 INFO L93 Difference]: Finished difference Result 40582 states and 61940 transitions. [2022-07-21 11:09:42,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:09:42,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2022-07-21 11:09:42,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:42,786 INFO L225 Difference]: With dead ends: 40582 [2022-07-21 11:09:42,786 INFO L226 Difference]: Without dead ends: 25634 [2022-07-21 11:09:42,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:09:42,839 INFO L413 NwaCegarLoop]: 4026 mSDtfsCounter, 5161 mSDsluCounter, 3742 mSDsCounter, 0 mSdLazyCounter, 3194 mSolverCounterSat, 2459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5464 SdHoareTripleChecker+Valid, 7768 SdHoareTripleChecker+Invalid, 5653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2459 IncrementalHoareTripleChecker+Valid, 3194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:42,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5464 Valid, 7768 Invalid, 5653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2459 Valid, 3194 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-07-21 11:09:42,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25634 states. [2022-07-21 11:09:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25634 to 21365. [2022-07-21 11:09:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21365 states, 15153 states have (on average 1.348115884643305) internal successors, (20428), 15817 states have internal predecessors, (20428), 4721 states have call successors, (4721), 1275 states have call predecessors, (4721), 1490 states have return successors, (6617), 4733 states have call predecessors, (6617), 4720 states have call successors, (6617) [2022-07-21 11:09:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21365 states to 21365 states and 31766 transitions. [2022-07-21 11:09:43,937 INFO L78 Accepts]: Start accepts. Automaton has 21365 states and 31766 transitions. Word has length 149 [2022-07-21 11:09:43,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:43,938 INFO L495 AbstractCegarLoop]: Abstraction has 21365 states and 31766 transitions. [2022-07-21 11:09:43,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 11:09:43,939 INFO L276 IsEmpty]: Start isEmpty. Operand 21365 states and 31766 transitions. [2022-07-21 11:09:43,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 11:09:43,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:43,943 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:43,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 11:09:43,944 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:43,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:43,944 INFO L85 PathProgramCache]: Analyzing trace with hash -43905274, now seen corresponding path program 1 times [2022-07-21 11:09:43,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:43,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216279996] [2022-07-21 11:09:43,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:43,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:09:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:09:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 11:09:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 11:09:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:09:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-21 11:09:44,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:44,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216279996] [2022-07-21 11:09:44,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216279996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:44,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:44,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 11:09:44,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514875735] [2022-07-21 11:09:44,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:44,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 11:09:44,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:44,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 11:09:44,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:09:44,360 INFO L87 Difference]: Start difference. First operand 21365 states and 31766 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-21 11:09:56,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:56,991 INFO L93 Difference]: Finished difference Result 47091 states and 73359 transitions. [2022-07-21 11:09:56,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 11:09:56,992 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16) Word has length 149 [2022-07-21 11:09:56,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:57,167 INFO L225 Difference]: With dead ends: 47091 [2022-07-21 11:09:57,167 INFO L226 Difference]: Without dead ends: 25746 [2022-07-21 11:09:57,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-07-21 11:09:57,257 INFO L413 NwaCegarLoop]: 2990 mSDtfsCounter, 964 mSDsluCounter, 18585 mSDsCounter, 0 mSdLazyCounter, 11875 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 21575 SdHoareTripleChecker+Invalid, 12515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 11875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:57,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 21575 Invalid, 12515 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [640 Valid, 11875 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-07-21 11:09:57,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25746 states. [2022-07-21 11:09:58,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25746 to 21476. [2022-07-21 11:09:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21476 states, 15237 states have (on average 1.3467874253461967) internal successors, (20521), 15913 states have internal predecessors, (20521), 4721 states have call successors, (4721), 1275 states have call predecessors, (4721), 1517 states have return successors, (6912), 4748 states have call predecessors, (6912), 4720 states have call successors, (6912) [2022-07-21 11:09:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21476 states to 21476 states and 32154 transitions. [2022-07-21 11:09:58,289 INFO L78 Accepts]: Start accepts. Automaton has 21476 states and 32154 transitions. Word has length 149 [2022-07-21 11:09:58,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:58,289 INFO L495 AbstractCegarLoop]: Abstraction has 21476 states and 32154 transitions. [2022-07-21 11:09:58,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-21 11:09:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 21476 states and 32154 transitions. [2022-07-21 11:09:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 11:09:58,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:58,294 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:58,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 11:09:58,295 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:58,297 INFO L85 PathProgramCache]: Analyzing trace with hash -277307092, now seen corresponding path program 1 times [2022-07-21 11:09:58,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:58,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867968284] [2022-07-21 11:09:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:58,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:09:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:09:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 11:09:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 11:09:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:09:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:09:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-21 11:09:58,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:58,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867968284] [2022-07-21 11:09:58,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867968284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:58,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:58,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 11:09:58,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34070971] [2022-07-21 11:09:58,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:58,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 11:09:58,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:58,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 11:09:58,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:09:58,676 INFO L87 Difference]: Start difference. First operand 21476 states and 32154 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 11:10:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:07,612 INFO L93 Difference]: Finished difference Result 52292 states and 84323 transitions. [2022-07-21 11:10:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 11:10:07,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-07-21 11:10:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:07,855 INFO L225 Difference]: With dead ends: 52292 [2022-07-21 11:10:07,856 INFO L226 Difference]: Without dead ends: 30836 [2022-07-21 11:10:07,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:10:07,968 INFO L413 NwaCegarLoop]: 3185 mSDtfsCounter, 2383 mSDsluCounter, 9787 mSDsCounter, 0 mSdLazyCounter, 6570 mSolverCounterSat, 1593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2626 SdHoareTripleChecker+Valid, 12972 SdHoareTripleChecker+Invalid, 8163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1593 IncrementalHoareTripleChecker+Valid, 6570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:07,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2626 Valid, 12972 Invalid, 8163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1593 Valid, 6570 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-07-21 11:10:07,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30836 states. [2022-07-21 11:10:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30836 to 21575. [2022-07-21 11:10:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21575 states, 15290 states have (on average 1.3477436232831916) internal successors, (20607), 15985 states have internal predecessors, (20607), 4763 states have call successors, (4763), 1275 states have call predecessors, (4763), 1521 states have return successors, (6855), 4778 states have call predecessors, (6855), 4762 states have call successors, (6855) [2022-07-21 11:10:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21575 states to 21575 states and 32225 transitions. [2022-07-21 11:10:09,106 INFO L78 Accepts]: Start accepts. Automaton has 21575 states and 32225 transitions. Word has length 155 [2022-07-21 11:10:09,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:09,106 INFO L495 AbstractCegarLoop]: Abstraction has 21575 states and 32225 transitions. [2022-07-21 11:10:09,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 11:10:09,107 INFO L276 IsEmpty]: Start isEmpty. Operand 21575 states and 32225 transitions. [2022-07-21 11:10:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-21 11:10:09,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:09,112 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:09,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 11:10:09,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:09,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1754202023, now seen corresponding path program 1 times [2022-07-21 11:10:09,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:10:09,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291697407] [2022-07-21 11:10:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:10:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:10:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:10:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:10:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:10:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:10:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:10:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:10:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:10:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 11:10:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 11:10:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:10:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:10:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 11:10:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-07-21 11:10:09,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:10:09,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291697407] [2022-07-21 11:10:09,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291697407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:09,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:09,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 11:10:09,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315592546] [2022-07-21 11:10:09,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:09,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 11:10:09,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:10:09,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 11:10:09,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:10:09,553 INFO L87 Difference]: Start difference. First operand 21575 states and 32225 transitions. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 11:10:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:21,698 INFO L93 Difference]: Finished difference Result 47349 states and 73671 transitions. [2022-07-21 11:10:21,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 11:10:21,699 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) Word has length 170 [2022-07-21 11:10:21,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:21,810 INFO L225 Difference]: With dead ends: 47349 [2022-07-21 11:10:21,810 INFO L226 Difference]: Without dead ends: 25794 [2022-07-21 11:10:21,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-21 11:10:21,880 INFO L413 NwaCegarLoop]: 3018 mSDtfsCounter, 948 mSDsluCounter, 20953 mSDsCounter, 0 mSdLazyCounter, 12968 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 23971 SdHoareTripleChecker+Invalid, 13605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 12968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:21,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 23971 Invalid, 13605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [637 Valid, 12968 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-07-21 11:10:21,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25794 states. [2022-07-21 11:10:22,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25794 to 21589. [2022-07-21 11:10:22,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21589 states, 15304 states have (on average 1.3461186617877678) internal successors, (20601), 15992 states have internal predecessors, (20601), 4763 states have call successors, (4763), 1275 states have call predecessors, (4763), 1521 states have return successors, (6826), 4785 states have call predecessors, (6826), 4762 states have call successors, (6826) [2022-07-21 11:10:22,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21589 states to 21589 states and 32190 transitions. [2022-07-21 11:10:22,868 INFO L78 Accepts]: Start accepts. Automaton has 21589 states and 32190 transitions. Word has length 170 [2022-07-21 11:10:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:22,868 INFO L495 AbstractCegarLoop]: Abstraction has 21589 states and 32190 transitions. [2022-07-21 11:10:22,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 11:10:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 21589 states and 32190 transitions. [2022-07-21 11:10:22,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 11:10:22,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:22,874 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:22,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 11:10:22,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:22,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash 729024575, now seen corresponding path program 1 times [2022-07-21 11:10:22,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:10:22,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215224271] [2022-07-21 11:10:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:22,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:10:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:10:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:10:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:10:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:10:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:10:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:10:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:10:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:10:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 11:10:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 11:10:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:10:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:10:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 11:10:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 11:10:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-21 11:10:23,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:10:23,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215224271] [2022-07-21 11:10:23,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215224271] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:10:23,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980280726] [2022-07-21 11:10:23,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:23,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:10:23,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:10:23,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:10:23,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 11:10:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:10:24,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-21 11:10:24,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:24,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980280726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:24,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:10:24,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-21 11:10:24,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148181274] [2022-07-21 11:10:24,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:24,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:10:24,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:10:24,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:10:24,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:10:24,217 INFO L87 Difference]: Start difference. First operand 21589 states and 32190 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:10:25,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:25,222 INFO L93 Difference]: Finished difference Result 43185 states and 64369 transitions. [2022-07-21 11:10:25,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:10:25,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-07-21 11:10:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:25,338 INFO L225 Difference]: With dead ends: 43185 [2022-07-21 11:10:25,339 INFO L226 Difference]: Without dead ends: 21554 [2022-07-21 11:10:25,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:10:25,409 INFO L413 NwaCegarLoop]: 3363 mSDtfsCounter, 2980 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:25,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2980 Valid, 3675 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:10:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21554 states. [2022-07-21 11:10:26,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21554 to 21533. [2022-07-21 11:10:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21533 states, 15257 states have (on average 1.3466605492560793) internal successors, (20546), 15940 states have internal predecessors, (20546), 4749 states have call successors, (4749), 1280 states have call predecessors, (4749), 1526 states have return successors, (6782), 4771 states have call predecessors, (6782), 4748 states have call successors, (6782) [2022-07-21 11:10:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21533 states to 21533 states and 32077 transitions. [2022-07-21 11:10:26,433 INFO L78 Accepts]: Start accepts. Automaton has 21533 states and 32077 transitions. Word has length 176 [2022-07-21 11:10:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:26,434 INFO L495 AbstractCegarLoop]: Abstraction has 21533 states and 32077 transitions. [2022-07-21 11:10:26,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:10:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 21533 states and 32077 transitions. [2022-07-21 11:10:26,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 11:10:26,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:26,440 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:26,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 11:10:26,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:10:26,662 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:26,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:26,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1418660964, now seen corresponding path program 1 times [2022-07-21 11:10:26,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:10:26,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111216918] [2022-07-21 11:10:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:26,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:10:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:26,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:26,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:27,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:10:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:27,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:10:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:27,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:10:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:27,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:10:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:10:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:27,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:10:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:27,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:10:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:27,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:10:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:27,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 11:10:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:27,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 11:10:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:27,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:10:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:27,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:28,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:28,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:28,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:10:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:28,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:28,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:28,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 11:10:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:28,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 11:10:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:28,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 11:10:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:28,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 11:10:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:28,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 11:10:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-07-21 11:10:28,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:10:28,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111216918] [2022-07-21 11:10:28,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111216918] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:10:28,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319056688] [2022-07-21 11:10:28,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:28,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:10:28,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:10:28,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:10:28,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 11:10:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:29,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 11:10:29,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-21 11:10:29,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:29,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319056688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:29,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:10:29,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 29 [2022-07-21 11:10:29,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072975694] [2022-07-21 11:10:29,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:29,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:10:29,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:10:29,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:10:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2022-07-21 11:10:29,718 INFO L87 Difference]: Start difference. First operand 21533 states and 32077 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-21 11:10:30,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:30,676 INFO L93 Difference]: Finished difference Result 42822 states and 63829 transitions. [2022-07-21 11:10:30,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:10:30,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 190 [2022-07-21 11:10:30,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:30,781 INFO L225 Difference]: With dead ends: 42822 [2022-07-21 11:10:30,781 INFO L226 Difference]: Without dead ends: 21528 [2022-07-21 11:10:30,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2022-07-21 11:10:30,847 INFO L413 NwaCegarLoop]: 3109 mSDtfsCounter, 3 mSDsluCounter, 9316 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12425 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:30,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12425 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:10:30,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21528 states. [2022-07-21 11:10:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21528 to 21528. [2022-07-21 11:10:31,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21528 states, 15254 states have (on average 1.3466631703159826) internal successors, (20542), 15937 states have internal predecessors, (20542), 4748 states have call successors, (4748), 1279 states have call predecessors, (4748), 1525 states have return successors, (6781), 4770 states have call predecessors, (6781), 4747 states have call successors, (6781) [2022-07-21 11:10:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21528 states to 21528 states and 32071 transitions. [2022-07-21 11:10:31,815 INFO L78 Accepts]: Start accepts. Automaton has 21528 states and 32071 transitions. Word has length 190 [2022-07-21 11:10:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:31,816 INFO L495 AbstractCegarLoop]: Abstraction has 21528 states and 32071 transitions. [2022-07-21 11:10:31,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-21 11:10:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 21528 states and 32071 transitions. [2022-07-21 11:10:31,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-21 11:10:31,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:31,822 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:31,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 11:10:32,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 11:10:32,036 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:32,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:32,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1539380712, now seen corresponding path program 1 times [2022-07-21 11:10:32,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:10:32,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148635081] [2022-07-21 11:10:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:32,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:10:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:10:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:10:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:10:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:10:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:10:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:10:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:10:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:10:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 11:10:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 11:10:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:10:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:32,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 11:10:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:33,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:33,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:33,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:10:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:33,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:33,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:33,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 11:10:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 11:10:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:33,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-21 11:10:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-21 11:10:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:33,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 11:10:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-07-21 11:10:33,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:10:33,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148635081] [2022-07-21 11:10:33,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148635081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:10:33,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886894857] [2022-07-21 11:10:33,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:33,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:10:33,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:10:33,819 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:10:33,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 11:10:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:34,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-21 11:10:34,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:34,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 11:10:34,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 11:10:34,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 11:10:34,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 11:10:34,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 11:10:35,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 11:10:35,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 11:10:35,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 11:10:35,209 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 11:10:35,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-07-21 11:10:35,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 11:10:35,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 11:10:35,791 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 11:10:35,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-21 11:10:35,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 11:10:35,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 11:10:36,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 11:10:36,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-21 11:10:36,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 11:10:36,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-21 11:10:36,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 11:10:36,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-21 11:10:37,023 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 11:10:37,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 11:10:37,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-21 11:10:37,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 11:10:37,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 11:10:37,341 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 11:10:37,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2022-07-21 11:10:37,354 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 11:10:37,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-21 11:10:37,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-21 11:10:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-07-21 11:10:37,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:10:37,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886894857] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:10:37,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 11:10:37,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21] total 44 [2022-07-21 11:10:37,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455915380] [2022-07-21 11:10:37,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 11:10:37,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-21 11:10:37,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:10:37,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-21 11:10:37,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1898, Unknown=13, NotChecked=0, Total=2070 [2022-07-21 11:10:37,964 INFO L87 Difference]: Start difference. First operand 21528 states and 32071 transitions. Second operand has 44 states, 44 states have (on average 4.818181818181818) internal successors, (212), 33 states have internal predecessors, (212), 15 states have call successors, (52), 12 states have call predecessors, (52), 16 states have return successors, (51), 20 states have call predecessors, (51), 15 states have call successors, (51) [2022-07-21 11:10:57,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:12:48,338 INFO L93 Difference]: Finished difference Result 36849 states and 58930 transitions. [2022-07-21 11:12:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-07-21 11:12:48,338 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 [2022-07-21 11:12:48,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:12:48,502 INFO L225 Difference]: With dead ends: 36849 [2022-07-21 11:12:48,502 INFO L226 Difference]: Without dead ends: 36829 [2022-07-21 11:12:48,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10500 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=3100, Invalid=26621, Unknown=35, NotChecked=0, Total=29756 [2022-07-21 11:12:48,533 INFO L413 NwaCegarLoop]: 2840 mSDtfsCounter, 17971 mSDsluCounter, 9293 mSDsCounter, 0 mSdLazyCounter, 73482 mSolverCounterSat, 10414 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18296 SdHoareTripleChecker+Valid, 12133 SdHoareTripleChecker+Invalid, 110262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 10414 IncrementalHoareTripleChecker+Valid, 73482 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 26365 IncrementalHoareTripleChecker+Unchecked, 112.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:12:48,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18296 Valid, 12133 Invalid, 110262 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [10414 Valid, 73482 Invalid, 1 Unknown, 26365 Unchecked, 112.4s Time] [2022-07-21 11:12:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36829 states. [2022-07-21 11:12:49,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36829 to 25081. [2022-07-21 11:12:49,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25081 states, 17979 states have (on average 1.353912898381445) internal successors, (24342), 18746 states have internal predecessors, (24342), 5300 states have call successors, (5300), 1555 states have call predecessors, (5300), 1801 states have return successors, (7429), 5262 states have call predecessors, (7429), 5299 states have call successors, (7429) [2022-07-21 11:12:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25081 states to 25081 states and 37071 transitions. [2022-07-21 11:12:49,897 INFO L78 Accepts]: Start accepts. Automaton has 25081 states and 37071 transitions. Word has length 203 [2022-07-21 11:12:49,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:12:49,898 INFO L495 AbstractCegarLoop]: Abstraction has 25081 states and 37071 transitions. [2022-07-21 11:12:49,898 INFO L496 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) [2022-07-21 11:12:49,898 INFO L276 IsEmpty]: Start isEmpty. Operand 25081 states and 37071 transitions. [2022-07-21 11:12:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-21 11:12:49,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:12:49,909 INFO L195 NwaCegarLoop]: 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] [2022-07-21 11:12:49,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 11:12:50,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:12:50,131 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:12:50,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:12:50,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1741599963, now seen corresponding path program 2 times [2022-07-21 11:12:50,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:12:50,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920536571] [2022-07-21 11:12:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:12:50,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:12:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:12:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:12:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:12:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:12:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:12:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:12:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:12:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:12:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:12:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:12:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:12:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 11:12:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:12:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 11:12:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:12:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 11:12:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:12:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 11:12:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 11:12:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:12:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:51,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:12:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:52,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:12:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:52,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:12:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:12:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:12:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:52,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 11:12:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:52,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 11:12:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 11:12:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-21 11:12:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-21 11:12:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:52,473 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-07-21 11:12:52,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:12:52,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920536571] [2022-07-21 11:12:52,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920536571] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:12:52,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275857037] [2022-07-21 11:12:52,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 11:12:52,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:12:52,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:12:52,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:12:52,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 11:12:53,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 11:12:53,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 11:12:53,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-21 11:12:53,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:12:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 41 proven. 3 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-07-21 11:12:54,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:12:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-07-21 11:12:55,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275857037] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:12:55,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:12:55,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 16, 14] total 53 [2022-07-21 11:12:55,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837659311] [2022-07-21 11:12:55,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:12:55,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-21 11:12:55,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:12:55,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-21 11:12:55,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2609, Unknown=0, NotChecked=0, Total=2756 [2022-07-21 11:12:55,673 INFO L87 Difference]: Start difference. First operand 25081 states and 37071 transitions. Second operand has 53 states, 52 states have (on average 4.326923076923077) internal successors, (225), 36 states have internal predecessors, (225), 14 states have call successors, (61), 7 states have call predecessors, (61), 16 states have return successors, (63), 22 states have call predecessors, (63), 14 states have call successors, (63)