./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.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 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 01:46:34,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 01:46:34,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 01:46:34,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 01:46:34,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 01:46:34,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 01:46:34,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 01:46:34,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 01:46:34,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 01:46:34,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 01:46:34,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 01:46:34,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 01:46:34,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 01:46:34,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 01:46:34,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 01:46:34,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 01:46:34,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 01:46:34,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 01:46:34,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 01:46:34,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 01:46:34,678 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 01:46:34,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 01:46:34,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 01:46:34,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 01:46:34,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 01:46:34,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 01:46:34,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 01:46:34,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 01:46:34,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 01:46:34,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 01:46:34,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 01:46:34,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 01:46:34,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 01:46:34,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 01:46:34,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 01:46:34,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 01:46:34,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 01:46:34,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 01:46:34,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 01:46:34,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 01:46:34,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 01:46:34,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 01:46:34,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 01:46:34,719 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 01:46:34,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 01:46:34,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 01:46:34,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 01:46:34,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 01:46:34,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 01:46:34,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 01:46:34,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 01:46:34,722 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 01:46:34,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 01:46:34,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 01:46:34,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 01:46:34,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 01:46:34,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 01:46:34,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 01:46:34,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 01:46:34,724 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 01:46:34,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 01:46:34,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 01:46:34,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 01:46:34,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 01:46:34,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 01:46:34,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 01:46:34,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 01:46:34,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 01:46:34,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 01:46:34,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 01:46:34,726 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 01:46:34,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 01:46:34,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 01:46:34,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e [2022-07-14 01:46:34,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 01:46:34,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 01:46:34,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 01:46:34,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 01:46:34,956 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 01:46:34,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2022-07-14 01:46:35,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca97d3ad8/1b004bf9918248ab95feebf0046a20ef/FLAGcea326780 [2022-07-14 01:46:35,681 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 01:46:35,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2022-07-14 01:46:35,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca97d3ad8/1b004bf9918248ab95feebf0046a20ef/FLAGcea326780 [2022-07-14 01:46:35,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca97d3ad8/1b004bf9918248ab95feebf0046a20ef [2022-07-14 01:46:35,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 01:46:35,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 01:46:35,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 01:46:35,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 01:46:35,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 01:46:35,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:46:35" (1/1) ... [2022-07-14 01:46:35,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8638151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:35, skipping insertion in model container [2022-07-14 01:46:35,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:46:35" (1/1) ... [2022-07-14 01:46:35,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 01:46:35,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 01:46:37,433 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2022-07-14 01:46:37,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 01:46:37,517 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 01:46:37,785 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2022-07-14 01:46:37,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 01:46:37,845 INFO L208 MainTranslator]: Completed translation [2022-07-14 01:46:37,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:37 WrapperNode [2022-07-14 01:46:37,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 01:46:37,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 01:46:37,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 01:46:37,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 01:46:37,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:37" (1/1) ... [2022-07-14 01:46:37,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:37" (1/1) ... [2022-07-14 01:46:38,011 INFO L137 Inliner]: procedures = 228, calls = 2012, calls flagged for inlining = 106, calls inlined = 86, statements flattened = 2912 [2022-07-14 01:46:38,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 01:46:38,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 01:46:38,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 01:46:38,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 01:46:38,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:37" (1/1) ... [2022-07-14 01:46:38,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:37" (1/1) ... [2022-07-14 01:46:38,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:37" (1/1) ... [2022-07-14 01:46:38,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:37" (1/1) ... [2022-07-14 01:46:38,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:37" (1/1) ... [2022-07-14 01:46:38,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:37" (1/1) ... [2022-07-14 01:46:38,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:37" (1/1) ... [2022-07-14 01:46:38,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 01:46:38,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 01:46:38,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 01:46:38,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 01:46:38,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:37" (1/1) ... [2022-07-14 01:46:38,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 01:46:38,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:46:38,228 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) [2022-07-14 01:46:38,236 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 [2022-07-14 01:46:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure insb [2022-07-14 01:46:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure insb [2022-07-14 01:46:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure WriteW6692 [2022-07-14 01:46:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteW6692 [2022-07-14 01:46:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_clear_bchannel [2022-07-14 01:46:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_clear_bchannel [2022-07-14 01:46:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 01:46:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 01:46:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-14 01:46:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-14 01:46:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-14 01:46:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-14 01:46:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 01:46:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 01:46:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_unregister_device [2022-07-14 01:46:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_unregister_device [2022-07-14 01:46:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure ReadW6692 [2022-07-14 01:46:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadW6692 [2022-07-14 01:46:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure W6692B_interrupt [2022-07-14 01:46:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692B_interrupt [2022-07-14 01:46:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-07-14 01:46:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-07-14 01:46:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure outsb [2022-07-14 01:46:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure outsb [2022-07-14 01:46:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 01:46:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 01:46:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 01:46:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 01:46:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_empty_Bfifo [2022-07-14 01:46:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_empty_Bfifo [2022-07-14 01:46:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-14 01:46:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-14 01:46:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_fill_Bfifo [2022-07-14 01:46:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_fill_Bfifo [2022-07-14 01:46:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure ReadW6692B [2022-07-14 01:46:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadW6692B [2022-07-14 01:46:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-14 01:46:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-14 01:46:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_empty_Dfifo [2022-07-14 01:46:38,285 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_empty_Dfifo [2022-07-14 01:46:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 01:46:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 01:46:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-14 01:46:38,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-14 01:46:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-14 01:46:38,286 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-14 01:46:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 01:46:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 01:46:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-14 01:46:38,286 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-14 01:46:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_led_handler [2022-07-14 01:46:38,286 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_led_handler [2022-07-14 01:46:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure send_next [2022-07-14 01:46:38,287 INFO L138 BoogieDeclarations]: Found implementation of procedure send_next [2022-07-14 01:46:38,287 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-14 01:46:38,287 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-14 01:46:38,287 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-14 01:46:38,288 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-14 01:46:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure WriteW6692B [2022-07-14 01:46:38,289 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteW6692B [2022-07-14 01:46:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freebchannel [2022-07-14 01:46:38,289 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freebchannel [2022-07-14 01:46:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freedchannel [2022-07-14 01:46:38,289 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freedchannel [2022-07-14 01:46:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 01:46:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure ph_command [2022-07-14 01:46:38,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_command [2022-07-14 01:46:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-14 01:46:38,290 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-14 01:46:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-14 01:46:38,290 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-14 01:46:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-14 01:46:38,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-14 01:46:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure _set_debug [2022-07-14 01:46:38,291 INFO L138 BoogieDeclarations]: Found implementation of procedure _set_debug [2022-07-14 01:46:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-07-14 01:46:38,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-07-14 01:46:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 01:46:38,291 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 01:46:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-07-14 01:46:38,292 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-07-14 01:46:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure disable_hwirq [2022-07-14 01:46:38,292 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_hwirq [2022-07-14 01:46:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 01:46:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_probe [2022-07-14 01:46:38,292 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_probe [2022-07-14 01:46:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-07-14 01:46:38,292 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-07-14 01:46:38,293 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2022-07-14 01:46:38,293 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2022-07-14 01:46:38,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 01:46:38,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 01:46:38,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-14 01:46:38,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-14 01:46:38,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 01:46:38,294 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-14 01:46:38,294 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-14 01:46:38,294 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_3 [2022-07-14 01:46:38,294 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_3 [2022-07-14 01:46:38,295 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-14 01:46:38,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-14 01:46:38,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 01:46:38,295 INFO L130 BoogieDeclarations]: Found specification of procedure recv_Bchannel [2022-07-14 01:46:38,295 INFO L138 BoogieDeclarations]: Found implementation of procedure recv_Bchannel [2022-07-14 01:46:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irqsave [2022-07-14 01:46:38,296 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irqsave [2022-07-14 01:46:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 01:46:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-14 01:46:38,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-14 01:46:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2022-07-14 01:46:38,296 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2022-07-14 01:46:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irqrestore [2022-07-14 01:46:38,297 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irqrestore [2022-07-14 01:46:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_fill_Dfifo [2022-07-14 01:46:38,297 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_fill_Dfifo [2022-07-14 01:46:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_mode [2022-07-14 01:46:38,297 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_mode [2022-07-14 01:46:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_dframe [2022-07-14 01:46:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_dframe [2022-07-14 01:46:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure mI_alloc_skb [2022-07-14 01:46:38,300 INFO L138 BoogieDeclarations]: Found implementation of procedure mI_alloc_skb [2022-07-14 01:46:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-14 01:46:38,300 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-14 01:46:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure l1_event [2022-07-14 01:46:38,301 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_event [2022-07-14 01:46:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-07-14 01:46:38,301 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-07-14 01:46:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-07-14 01:46:38,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-07-14 01:46:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 01:46:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-07-14 01:46:38,311 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-07-14 01:46:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 01:46:38,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 01:46:38,715 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 01:46:38,720 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 01:46:39,597 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 01:46:41,041 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 01:46:41,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 01:46:41,052 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 01:46:41,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:46:41 BoogieIcfgContainer [2022-07-14 01:46:41,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 01:46:41,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 01:46:41,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 01:46:41,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 01:46:41,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 01:46:35" (1/3) ... [2022-07-14 01:46:41,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31937dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:46:41, skipping insertion in model container [2022-07-14 01:46:41,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:37" (2/3) ... [2022-07-14 01:46:41,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31937dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:46:41, skipping insertion in model container [2022-07-14 01:46:41,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:46:41" (3/3) ... [2022-07-14 01:46:41,062 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2022-07-14 01:46:41,097 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 01:46:41,098 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 01:46:41,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 01:46:41,206 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@f66fc99, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2d5eb78d [2022-07-14 01:46:41,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 01:46:41,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 1020 states, 692 states have (on average 1.3482658959537572) internal successors, (933), 726 states have internal predecessors, (933), 266 states have call successors, (266), 61 states have call predecessors, (266), 60 states have return successors, (260), 254 states have call predecessors, (260), 260 states have call successors, (260) [2022-07-14 01:46:41,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-14 01:46:41,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:46:41,232 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:46:41,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:46:41,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:46:41,239 INFO L85 PathProgramCache]: Analyzing trace with hash 982112823, now seen corresponding path program 1 times [2022-07-14 01:46:41,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:46:41,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648137941] [2022-07-14 01:46:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:46:41,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:46:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:41,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:46:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:41,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:41,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:41,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:46:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:41,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:41,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:46:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:41,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-14 01:46:41,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:46:41,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648137941] [2022-07-14 01:46:41,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648137941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:46:41,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:46:41,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 01:46:41,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540666074] [2022-07-14 01:46:41,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:46:41,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 01:46:41,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:46:41,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 01:46:41,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 01:46:41,922 INFO L87 Difference]: Start difference. First operand has 1020 states, 692 states have (on average 1.3482658959537572) internal successors, (933), 726 states have internal predecessors, (933), 266 states have call successors, (266), 61 states have call predecessors, (266), 60 states have return successors, (260), 254 states have call predecessors, (260), 260 states have call successors, (260) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-14 01:46:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:46:44,057 INFO L93 Difference]: Finished difference Result 2062 states and 2974 transitions. [2022-07-14 01:46:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 01:46:44,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 63 [2022-07-14 01:46:44,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:46:44,079 INFO L225 Difference]: With dead ends: 2062 [2022-07-14 01:46:44,079 INFO L226 Difference]: Without dead ends: 1030 [2022-07-14 01:46:44,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 01:46:44,098 INFO L413 NwaCegarLoop]: 1399 mSDtfsCounter, 328 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-14 01:46:44,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 2092 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-14 01:46:44,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-07-14 01:46:44,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1003. [2022-07-14 01:46:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 683 states have (on average 1.3250366032210834) internal successors, (905), 709 states have internal predecessors, (905), 260 states have call successors, (260), 60 states have call predecessors, (260), 59 states have return successors, (259), 253 states have call predecessors, (259), 259 states have call successors, (259) [2022-07-14 01:46:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1424 transitions. [2022-07-14 01:46:44,208 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1424 transitions. Word has length 63 [2022-07-14 01:46:44,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:46:44,209 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1424 transitions. [2022-07-14 01:46:44,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-14 01:46:44,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1424 transitions. [2022-07-14 01:46:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-14 01:46:44,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:46:44,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:46:44,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 01:46:44,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:46:44,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:46:44,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1308437617, now seen corresponding path program 1 times [2022-07-14 01:46:44,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:46:44,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281792421] [2022-07-14 01:46:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:46:44,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:46:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:46:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:44,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:44,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:46:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:44,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:44,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:46:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:44,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-14 01:46:44,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:46:44,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281792421] [2022-07-14 01:46:44,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281792421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:46:44,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:46:44,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 01:46:44,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58858860] [2022-07-14 01:46:44,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:46:44,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 01:46:44,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:46:44,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 01:46:44,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:46:44,513 INFO L87 Difference]: Start difference. First operand 1003 states and 1424 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 01:46:47,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:46:47,160 INFO L93 Difference]: Finished difference Result 2697 states and 3834 transitions. [2022-07-14 01:46:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 01:46:47,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2022-07-14 01:46:47,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:46:47,175 INFO L225 Difference]: With dead ends: 2697 [2022-07-14 01:46:47,175 INFO L226 Difference]: Without dead ends: 1703 [2022-07-14 01:46:47,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:46:47,183 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 1309 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 3331 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-14 01:46:47,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 3331 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-14 01:46:47,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2022-07-14 01:46:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1650. [2022-07-14 01:46:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1136 states have (on average 1.3397887323943662) internal successors, (1522), 1186 states have internal predecessors, (1522), 413 states have call successors, (413), 101 states have call predecessors, (413), 100 states have return successors, (412), 400 states have call predecessors, (412), 412 states have call successors, (412) [2022-07-14 01:46:47,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2347 transitions. [2022-07-14 01:46:47,269 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2347 transitions. Word has length 63 [2022-07-14 01:46:47,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:46:47,270 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2347 transitions. [2022-07-14 01:46:47,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 01:46:47,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2347 transitions. [2022-07-14 01:46:47,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-14 01:46:47,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:46:47,274 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-14 01:46:47,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 01:46:47,275 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:46:47,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:46:47,276 INFO L85 PathProgramCache]: Analyzing trace with hash 866229186, now seen corresponding path program 1 times [2022-07-14 01:46:47,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:46:47,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416484241] [2022-07-14 01:46:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:46:47,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:46:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:46:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:46:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:46:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 01:46:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-14 01:46:47,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:46:47,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416484241] [2022-07-14 01:46:47,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416484241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:46:47,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:46:47,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 01:46:47,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515145189] [2022-07-14 01:46:47,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:46:47,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 01:46:47,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:46:47,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 01:46:47,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:46:47,633 INFO L87 Difference]: Start difference. First operand 1650 states and 2347 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-14 01:46:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:46:50,286 INFO L93 Difference]: Finished difference Result 3331 states and 4744 transitions. [2022-07-14 01:46:50,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 01:46:50,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 93 [2022-07-14 01:46:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:46:50,300 INFO L225 Difference]: With dead ends: 3331 [2022-07-14 01:46:50,300 INFO L226 Difference]: Without dead ends: 1699 [2022-07-14 01:46:50,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:46:50,313 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 171 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 3744 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-14 01:46:50,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 3744 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-14 01:46:50,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-07-14 01:46:50,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1650. [2022-07-14 01:46:50,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1136 states have (on average 1.3389084507042253) internal successors, (1521), 1186 states have internal predecessors, (1521), 413 states have call successors, (413), 101 states have call predecessors, (413), 100 states have return successors, (412), 400 states have call predecessors, (412), 412 states have call successors, (412) [2022-07-14 01:46:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2346 transitions. [2022-07-14 01:46:50,378 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2346 transitions. Word has length 93 [2022-07-14 01:46:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:46:50,381 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2346 transitions. [2022-07-14 01:46:50,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-14 01:46:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2346 transitions. [2022-07-14 01:46:50,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-14 01:46:50,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:46:50,386 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-14 01:46:50,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 01:46:50,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:46:50,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:46:50,390 INFO L85 PathProgramCache]: Analyzing trace with hash 324092267, now seen corresponding path program 1 times [2022-07-14 01:46:50,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:46:50,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507702123] [2022-07-14 01:46:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:46:50,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:46:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:46:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:46:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:46:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 01:46:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-14 01:46:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-14 01:46:50,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:46:50,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507702123] [2022-07-14 01:46:50,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507702123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:46:50,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:46:50,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 01:46:50,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020003937] [2022-07-14 01:46:50,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:46:50,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 01:46:50,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:46:50,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 01:46:50,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:46:50,747 INFO L87 Difference]: Start difference. First operand 1650 states and 2346 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-14 01:46:53,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:46:53,593 INFO L93 Difference]: Finished difference Result 1738 states and 2451 transitions. [2022-07-14 01:46:53,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 01:46:53,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2022-07-14 01:46:53,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:46:53,605 INFO L225 Difference]: With dead ends: 1738 [2022-07-14 01:46:53,605 INFO L226 Difference]: Without dead ends: 1735 [2022-07-14 01:46:53,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:46:53,607 INFO L413 NwaCegarLoop]: 1391 mSDtfsCounter, 556 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-14 01:46:53,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 3409 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-14 01:46:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2022-07-14 01:46:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1684. [2022-07-14 01:46:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1159 states have (on average 1.3330457290767903) internal successors, (1545), 1209 states have internal predecessors, (1545), 416 states have call successors, (416), 109 states have call predecessors, (416), 108 states have return successors, (415), 403 states have call predecessors, (415), 415 states have call successors, (415) [2022-07-14 01:46:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2376 transitions. [2022-07-14 01:46:53,671 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2376 transitions. Word has length 110 [2022-07-14 01:46:53,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:46:53,671 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2376 transitions. [2022-07-14 01:46:53,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-14 01:46:53,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2376 transitions. [2022-07-14 01:46:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-14 01:46:53,679 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:46:53,679 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:46:53,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 01:46:53,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:46:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:46:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 647215035, now seen corresponding path program 1 times [2022-07-14 01:46:53,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:46:53,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329811104] [2022-07-14 01:46:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:46:53,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:46:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:46:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:46:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:46:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:46:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 01:46:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-14 01:46:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:46:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-14 01:46:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 01:46:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:46:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:46:54,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:46:54,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329811104] [2022-07-14 01:46:54,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329811104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:46:54,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:46:54,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 01:46:54,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994069742] [2022-07-14 01:46:54,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:46:54,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 01:46:54,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:46:54,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 01:46:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-14 01:46:54,008 INFO L87 Difference]: Start difference. First operand 1684 states and 2376 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-14 01:47:00,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:47:00,714 INFO L93 Difference]: Finished difference Result 5164 states and 7313 transitions. [2022-07-14 01:47:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 01:47:00,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 108 [2022-07-14 01:47:00,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:47:00,732 INFO L225 Difference]: With dead ends: 5164 [2022-07-14 01:47:00,733 INFO L226 Difference]: Without dead ends: 3503 [2022-07-14 01:47:00,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-07-14 01:47:00,740 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 2363 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 5341 mSolverCounterSat, 1654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2612 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 6995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1654 IncrementalHoareTripleChecker+Valid, 5341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-14 01:47:00,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2612 Valid, 4454 Invalid, 6995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1654 Valid, 5341 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-07-14 01:47:00,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2022-07-14 01:47:00,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 3378. [2022-07-14 01:47:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 2316 states have (on average 1.3320379965457685) internal successors, (3085), 2426 states have internal predecessors, (3085), 844 states have call successors, (844), 216 states have call predecessors, (844), 217 states have return successors, (850), 811 states have call predecessors, (850), 843 states have call successors, (850) [2022-07-14 01:47:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 4779 transitions. [2022-07-14 01:47:00,870 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 4779 transitions. Word has length 108 [2022-07-14 01:47:00,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:47:00,872 INFO L495 AbstractCegarLoop]: Abstraction has 3378 states and 4779 transitions. [2022-07-14 01:47:00,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-14 01:47:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 4779 transitions. [2022-07-14 01:47:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-14 01:47:00,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:47:00,877 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:47:00,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 01:47:00,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:47:00,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:47:00,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2050401391, now seen corresponding path program 1 times [2022-07-14 01:47:00,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:47:00,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242120876] [2022-07-14 01:47:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:00,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:47:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:47:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:47:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:47:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 01:47:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-14 01:47:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-14 01:47:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-14 01:47:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:47:01,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:47:01,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242120876] [2022-07-14 01:47:01,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242120876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:47:01,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:47:01,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 01:47:01,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691190694] [2022-07-14 01:47:01,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:47:01,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 01:47:01,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:47:01,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 01:47:01,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-14 01:47:01,142 INFO L87 Difference]: Start difference. First operand 3378 states and 4779 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-14 01:47:07,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:47:07,589 INFO L93 Difference]: Finished difference Result 10334 states and 14644 transitions. [2022-07-14 01:47:07,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 01:47:07,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 109 [2022-07-14 01:47:07,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:47:07,622 INFO L225 Difference]: With dead ends: 10334 [2022-07-14 01:47:07,623 INFO L226 Difference]: Without dead ends: 6979 [2022-07-14 01:47:07,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-07-14 01:47:07,637 INFO L413 NwaCegarLoop]: 1456 mSDtfsCounter, 2350 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 5379 mSolverCounterSat, 1569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 4785 SdHoareTripleChecker+Invalid, 6948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1569 IncrementalHoareTripleChecker+Valid, 5379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-14 01:47:07,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2600 Valid, 4785 Invalid, 6948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1569 Valid, 5379 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-14 01:47:07,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6979 states. [2022-07-14 01:47:07,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6979 to 6736. [2022-07-14 01:47:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6736 states, 4622 states have (on average 1.331674599740372) internal successors, (6155), 4840 states have internal predecessors, (6155), 1680 states have call successors, (1680), 430 states have call predecessors, (1680), 433 states have return successors, (1705), 1617 states have call predecessors, (1705), 1679 states have call successors, (1705) [2022-07-14 01:47:08,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6736 states to 6736 states and 9540 transitions. [2022-07-14 01:47:08,020 INFO L78 Accepts]: Start accepts. Automaton has 6736 states and 9540 transitions. Word has length 109 [2022-07-14 01:47:08,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:47:08,021 INFO L495 AbstractCegarLoop]: Abstraction has 6736 states and 9540 transitions. [2022-07-14 01:47:08,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-14 01:47:08,022 INFO L276 IsEmpty]: Start isEmpty. Operand 6736 states and 9540 transitions. [2022-07-14 01:47:08,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-14 01:47:08,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:47:08,025 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:47:08,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 01:47:08,025 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:47:08,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:47:08,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1782059666, now seen corresponding path program 1 times [2022-07-14 01:47:08,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:47:08,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052466395] [2022-07-14 01:47:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:08,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:47:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:47:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:47:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:47:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-14 01:47:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 01:47:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 01:47:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-14 01:47:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:47:08,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:47:08,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052466395] [2022-07-14 01:47:08,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052466395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:47:08,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:47:08,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 01:47:08,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201426759] [2022-07-14 01:47:08,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:47:08,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 01:47:08,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:47:08,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 01:47:08,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-14 01:47:08,307 INFO L87 Difference]: Start difference. First operand 6736 states and 9540 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-14 01:47:14,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:47:14,469 INFO L93 Difference]: Finished difference Result 20658 states and 29280 transitions. [2022-07-14 01:47:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 01:47:14,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2022-07-14 01:47:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:47:14,536 INFO L225 Difference]: With dead ends: 20658 [2022-07-14 01:47:14,537 INFO L226 Difference]: Without dead ends: 13945 [2022-07-14 01:47:14,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-07-14 01:47:14,564 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 2352 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 5355 mSolverCounterSat, 1637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2602 SdHoareTripleChecker+Valid, 4472 SdHoareTripleChecker+Invalid, 6992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1637 IncrementalHoareTripleChecker+Valid, 5355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-14 01:47:14,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2602 Valid, 4472 Invalid, 6992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1637 Valid, 5355 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-14 01:47:14,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13945 states. [2022-07-14 01:47:15,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13945 to 13462. [2022-07-14 01:47:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13462 states, 9244 states have (on average 1.331133708351363) internal successors, (12305), 9676 states have internal predecessors, (12305), 3350 states have call successors, (3350), 860 states have call predecessors, (3350), 867 states have return successors, (3430), 3229 states have call predecessors, (3430), 3349 states have call successors, (3430) [2022-07-14 01:47:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13462 states to 13462 states and 19085 transitions. [2022-07-14 01:47:15,131 INFO L78 Accepts]: Start accepts. Automaton has 13462 states and 19085 transitions. Word has length 111 [2022-07-14 01:47:15,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:47:15,131 INFO L495 AbstractCegarLoop]: Abstraction has 13462 states and 19085 transitions. [2022-07-14 01:47:15,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-14 01:47:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 13462 states and 19085 transitions. [2022-07-14 01:47:15,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-14 01:47:15,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:47:15,134 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:47:15,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 01:47:15,134 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:47:15,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:47:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1194853762, now seen corresponding path program 1 times [2022-07-14 01:47:15,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:47:15,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702004447] [2022-07-14 01:47:15,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:15,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:47:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:47:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:47:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:47:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-14 01:47:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 01:47:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-14 01:47:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-14 01:47:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:47:15,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:47:15,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702004447] [2022-07-14 01:47:15,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702004447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:47:15,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:47:15,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 01:47:15,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139245603] [2022-07-14 01:47:15,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:47:15,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 01:47:15,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:47:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 01:47:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-14 01:47:15,356 INFO L87 Difference]: Start difference. First operand 13462 states and 19085 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-14 01:47:20,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:47:20,854 INFO L93 Difference]: Finished difference Result 40185 states and 56953 transitions. [2022-07-14 01:47:20,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 01:47:20,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2022-07-14 01:47:20,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:47:21,034 INFO L225 Difference]: With dead ends: 40185 [2022-07-14 01:47:21,035 INFO L226 Difference]: Without dead ends: 26746 [2022-07-14 01:47:21,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-07-14 01:47:21,088 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 2665 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 4478 mSolverCounterSat, 2189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2915 SdHoareTripleChecker+Valid, 4075 SdHoareTripleChecker+Invalid, 6667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2189 IncrementalHoareTripleChecker+Valid, 4478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-14 01:47:21,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2915 Valid, 4075 Invalid, 6667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2189 Valid, 4478 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-14 01:47:21,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26746 states. [2022-07-14 01:47:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26746 to 25833. [2022-07-14 01:47:21,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25833 states, 17752 states have (on average 1.3287516899504281) internal successors, (23588), 18560 states have internal predecessors, (23588), 6403 states have call successors, (6403), 1662 states have call predecessors, (6403), 1677 states have return successors, (6631), 6182 states have call predecessors, (6631), 6402 states have call successors, (6631) [2022-07-14 01:47:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25833 states to 25833 states and 36622 transitions. [2022-07-14 01:47:22,119 INFO L78 Accepts]: Start accepts. Automaton has 25833 states and 36622 transitions. Word has length 110 [2022-07-14 01:47:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:47:22,119 INFO L495 AbstractCegarLoop]: Abstraction has 25833 states and 36622 transitions. [2022-07-14 01:47:22,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-14 01:47:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 25833 states and 36622 transitions. [2022-07-14 01:47:22,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-14 01:47:22,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:47:22,123 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:47:22,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 01:47:22,124 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:47:22,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:47:22,124 INFO L85 PathProgramCache]: Analyzing trace with hash 528683235, now seen corresponding path program 1 times [2022-07-14 01:47:22,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:47:22,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477404456] [2022-07-14 01:47:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:22,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:47:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:47:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:47:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:47:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 01:47:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-14 01:47:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-14 01:47:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 01:47:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-14 01:47:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-14 01:47:22,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:47:22,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477404456] [2022-07-14 01:47:22,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477404456] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 01:47:22,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67481801] [2022-07-14 01:47:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:22,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:47:22,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:47:22,455 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) [2022-07-14 01:47:22,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 01:47:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:23,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 01:47:23,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:47:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:47:23,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:47:23,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67481801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:47:23,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 01:47:23,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-14 01:47:23,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111777707] [2022-07-14 01:47:23,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:47:23,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:47:23,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:47:23,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:47:23,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-14 01:47:23,481 INFO L87 Difference]: Start difference. First operand 25833 states and 36622 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 01:47:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:47:24,598 INFO L93 Difference]: Finished difference Result 64365 states and 91250 transitions. [2022-07-14 01:47:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 01:47:24,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2022-07-14 01:47:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:47:24,858 INFO L225 Difference]: With dead ends: 64365 [2022-07-14 01:47:24,858 INFO L226 Difference]: Without dead ends: 38555 [2022-07-14 01:47:24,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-07-14 01:47:24,954 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 1445 mSDsluCounter, 10760 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 13100 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:47:24,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 13100 Invalid, 82 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 01:47:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38555 states. [2022-07-14 01:47:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38555 to 34251. [2022-07-14 01:47:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34251 states, 23586 states have (on average 1.326210463834478) internal successors, (31280), 24614 states have internal predecessors, (31280), 8428 states have call successors, (8428), 2197 states have call predecessors, (8428), 2236 states have return successors, (8863), 8153 states have call predecessors, (8863), 8427 states have call successors, (8863) [2022-07-14 01:47:26,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34251 states to 34251 states and 48571 transitions. [2022-07-14 01:47:26,400 INFO L78 Accepts]: Start accepts. Automaton has 34251 states and 48571 transitions. Word has length 121 [2022-07-14 01:47:26,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:47:26,400 INFO L495 AbstractCegarLoop]: Abstraction has 34251 states and 48571 transitions. [2022-07-14 01:47:26,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 01:47:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 34251 states and 48571 transitions. [2022-07-14 01:47:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-14 01:47:26,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:47:26,403 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:47:26,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 01:47:26,611 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 [2022-07-14 01:47:26,612 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:47:26,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:47:26,612 INFO L85 PathProgramCache]: Analyzing trace with hash 166828212, now seen corresponding path program 1 times [2022-07-14 01:47:26,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:47:26,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900616972] [2022-07-14 01:47:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:26,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:47:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:26,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:47:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:26,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:47:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:26,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:26,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:26,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:47:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:26,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:26,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:26,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-14 01:47:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:27,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 01:47:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:27,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 01:47:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:27,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:27,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-14 01:47:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:27,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-14 01:47:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:47:27,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:47:27,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900616972] [2022-07-14 01:47:27,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900616972] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 01:47:27,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616402905] [2022-07-14 01:47:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:27,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:47:27,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:47:27,030 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) [2022-07-14 01:47:27,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 01:47:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:27,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 01:47:27,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:47:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:47:27,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:47:27,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616402905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:47:27,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 01:47:27,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-07-14 01:47:27,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653288803] [2022-07-14 01:47:27,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:47:27,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:47:27,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:47:27,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:47:27,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-14 01:47:27,815 INFO L87 Difference]: Start difference. First operand 34251 states and 48571 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 01:47:29,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:47:29,773 INFO L93 Difference]: Finished difference Result 85316 states and 120976 transitions. [2022-07-14 01:47:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 01:47:29,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 122 [2022-07-14 01:47:29,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:47:30,137 INFO L225 Difference]: With dead ends: 85316 [2022-07-14 01:47:30,137 INFO L226 Difference]: Without dead ends: 51088 [2022-07-14 01:47:30,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-07-14 01:47:30,275 INFO L413 NwaCegarLoop]: 2417 mSDtfsCounter, 1445 mSDsluCounter, 11056 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 13473 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:47:30,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 13473 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 01:47:30,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51088 states. [2022-07-14 01:47:31,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51088 to 42709. [2022-07-14 01:47:31,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42709 states, 29444 states have (on average 1.3244124439614182) internal successors, (38996), 30716 states have internal predecessors, (38996), 10453 states have call successors, (10453), 2732 states have call predecessors, (10453), 2811 states have return successors, (11103), 10116 states have call predecessors, (11103), 10452 states have call successors, (11103) [2022-07-14 01:47:32,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42709 states to 42709 states and 60552 transitions. [2022-07-14 01:47:32,427 INFO L78 Accepts]: Start accepts. Automaton has 42709 states and 60552 transitions. Word has length 122 [2022-07-14 01:47:32,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:47:32,444 INFO L495 AbstractCegarLoop]: Abstraction has 42709 states and 60552 transitions. [2022-07-14 01:47:32,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 01:47:32,444 INFO L276 IsEmpty]: Start isEmpty. Operand 42709 states and 60552 transitions. [2022-07-14 01:47:32,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-14 01:47:32,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:47:32,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:47:32,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 01:47:32,660 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 [2022-07-14 01:47:32,660 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:47:32,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:47:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash -38075638, now seen corresponding path program 1 times [2022-07-14 01:47:32,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:47:32,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370980570] [2022-07-14 01:47:32,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:32,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:47:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:47:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:47:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:47:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 01:47:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 01:47:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-14 01:47:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-14 01:47:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-14 01:47:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:47:32,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:47:32,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370980570] [2022-07-14 01:47:32,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370980570] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 01:47:32,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721965660] [2022-07-14 01:47:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:32,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:47:32,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:47:32,920 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) [2022-07-14 01:47:32,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 01:47:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:33,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 01:47:33,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:47:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:47:33,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:47:33,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721965660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:47:33,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 01:47:33,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-07-14 01:47:33,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303732398] [2022-07-14 01:47:33,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:47:33,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:47:33,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:47:33,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:47:33,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-14 01:47:33,779 INFO L87 Difference]: Start difference. First operand 42709 states and 60552 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 01:47:35,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:47:35,436 INFO L93 Difference]: Finished difference Result 102213 states and 144908 transitions. [2022-07-14 01:47:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 01:47:35,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 123 [2022-07-14 01:47:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:47:35,727 INFO L225 Difference]: With dead ends: 102213 [2022-07-14 01:47:35,727 INFO L226 Difference]: Without dead ends: 59527 [2022-07-14 01:47:35,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-07-14 01:47:35,975 INFO L413 NwaCegarLoop]: 2421 mSDtfsCounter, 1445 mSDsluCounter, 11072 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 13493 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:47:35,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 13493 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 01:47:36,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59527 states. [2022-07-14 01:47:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59527 to 42741. [2022-07-14 01:47:37,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42741 states, 29468 states have (on average 1.3241482285869417) internal successors, (39020), 30740 states have internal predecessors, (39020), 10453 states have call successors, (10453), 2732 states have call predecessors, (10453), 2819 states have return successors, (11115), 10124 states have call predecessors, (11115), 10452 states have call successors, (11115) [2022-07-14 01:47:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42741 states to 42741 states and 60588 transitions. [2022-07-14 01:47:37,636 INFO L78 Accepts]: Start accepts. Automaton has 42741 states and 60588 transitions. Word has length 123 [2022-07-14 01:47:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:47:37,637 INFO L495 AbstractCegarLoop]: Abstraction has 42741 states and 60588 transitions. [2022-07-14 01:47:37,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 01:47:37,637 INFO L276 IsEmpty]: Start isEmpty. Operand 42741 states and 60588 transitions. [2022-07-14 01:47:37,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-14 01:47:37,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:47:37,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:47:37,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-14 01:47:37,862 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 [2022-07-14 01:47:37,862 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:47:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:47:37,863 INFO L85 PathProgramCache]: Analyzing trace with hash 327539579, now seen corresponding path program 1 times [2022-07-14 01:47:37,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:47:37,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089635636] [2022-07-14 01:47:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:37,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:47:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:47:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:47:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:47:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-14 01:47:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:47:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-14 01:47:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-14 01:47:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-14 01:47:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:47:38,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:47:38,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089635636] [2022-07-14 01:47:38,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089635636] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 01:47:38,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206530286] [2022-07-14 01:47:38,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:38,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:47:38,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:47:38,155 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) [2022-07-14 01:47:38,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 01:47:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:39,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 01:47:39,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:47:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:47:39,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:47:39,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206530286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:47:39,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 01:47:39,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-07-14 01:47:39,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408919000] [2022-07-14 01:47:39,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:47:39,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:47:39,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:47:39,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:47:39,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-14 01:47:39,108 INFO L87 Difference]: Start difference. First operand 42741 states and 60588 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 01:47:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:47:40,710 INFO L93 Difference]: Finished difference Result 102261 states and 144960 transitions. [2022-07-14 01:47:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 01:47:40,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 124 [2022-07-14 01:47:40,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:47:41,010 INFO L225 Difference]: With dead ends: 102261 [2022-07-14 01:47:41,010 INFO L226 Difference]: Without dead ends: 59543 [2022-07-14 01:47:41,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-07-14 01:47:41,162 INFO L413 NwaCegarLoop]: 2421 mSDtfsCounter, 1445 mSDsluCounter, 11072 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 13493 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:47:41,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 13493 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 01:47:41,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59543 states. [2022-07-14 01:47:42,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59543 to 42761. [2022-07-14 01:47:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42761 states, 29484 states have (on average 1.323972323972324) internal successors, (39036), 30752 states have internal predecessors, (39036), 10453 states have call successors, (10453), 2732 states have call predecessors, (10453), 2823 states have return successors, (11119), 10132 states have call predecessors, (11119), 10452 states have call successors, (11119) [2022-07-14 01:47:42,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42761 states to 42761 states and 60608 transitions. [2022-07-14 01:47:42,991 INFO L78 Accepts]: Start accepts. Automaton has 42761 states and 60608 transitions. Word has length 124 [2022-07-14 01:47:42,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:47:42,991 INFO L495 AbstractCegarLoop]: Abstraction has 42761 states and 60608 transitions. [2022-07-14 01:47:42,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 01:47:42,992 INFO L276 IsEmpty]: Start isEmpty. Operand 42761 states and 60608 transitions. [2022-07-14 01:47:43,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-14 01:47:43,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:47:43,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:47:43,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 01:47:43,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:47:43,231 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:47:43,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:47:43,232 INFO L85 PathProgramCache]: Analyzing trace with hash -360061446, now seen corresponding path program 1 times [2022-07-14 01:47:43,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:47:43,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392694486] [2022-07-14 01:47:43,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:43,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:47:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:47:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:47:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:47:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:47:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-14 01:47:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-14 01:47:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-14 01:47:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-14 01:47:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:47:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-14 01:47:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-14 01:47:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:43,565 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-14 01:47:43,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:47:43,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392694486] [2022-07-14 01:47:43,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392694486] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 01:47:43,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204039766] [2022-07-14 01:47:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:47:43,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:47:43,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:47:43,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 01:47:43,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 01:47:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:47:44,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 3163 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 01:47:44,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:47:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-14 01:47:44,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:47:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-14 01:47:44,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204039766] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:47:44,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 01:47:44,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-07-14 01:47:44,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280623379] [2022-07-14 01:47:44,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 01:47:44,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-14 01:47:44,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:47:44,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-14 01:47:44,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-07-14 01:47:44,559 INFO L87 Difference]: Start difference. First operand 42761 states and 60608 transitions. Second operand has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 15 states have internal predecessors, (132), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-14 01:48:32,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:48:32,035 INFO L93 Difference]: Finished difference Result 129878 states and 184072 transitions. [2022-07-14 01:48:32,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-07-14 01:48:32,036 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 15 states have internal predecessors, (132), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 137 [2022-07-14 01:48:32,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:48:32,692 INFO L225 Difference]: With dead ends: 129878 [2022-07-14 01:48:32,692 INFO L226 Difference]: Without dead ends: 86776 [2022-07-14 01:48:32,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 312 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6695 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2752, Invalid=15338, Unknown=0, NotChecked=0, Total=18090 [2022-07-14 01:48:32,829 INFO L413 NwaCegarLoop]: 3687 mSDtfsCounter, 9077 mSDsluCounter, 17042 mSDsCounter, 0 mSdLazyCounter, 47751 mSolverCounterSat, 7748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9441 SdHoareTripleChecker+Valid, 20729 SdHoareTripleChecker+Invalid, 55499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7748 IncrementalHoareTripleChecker+Valid, 47751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time [2022-07-14 01:48:32,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9441 Valid, 20729 Invalid, 55499 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7748 Valid, 47751 Invalid, 0 Unknown, 0 Unchecked, 39.9s Time] [2022-07-14 01:48:32,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86776 states. [2022-07-14 01:48:35,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86776 to 71646. [2022-07-14 01:48:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71646 states, 49315 states have (on average 1.3213423907533204) internal successors, (65162), 51365 states have internal predecessors, (65162), 17642 states have call successors, (17642), 4555 states have call predecessors, (17642), 4688 states have return successors, (18737), 17108 states have call predecessors, (18737), 17641 states have call successors, (18737) [2022-07-14 01:48:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71646 states to 71646 states and 101541 transitions. [2022-07-14 01:48:35,869 INFO L78 Accepts]: Start accepts. Automaton has 71646 states and 101541 transitions. Word has length 137 [2022-07-14 01:48:35,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:48:35,870 INFO L495 AbstractCegarLoop]: Abstraction has 71646 states and 101541 transitions. [2022-07-14 01:48:35,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 15 states have internal predecessors, (132), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-14 01:48:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 71646 states and 101541 transitions. [2022-07-14 01:48:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-14 01:48:35,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:48:35,874 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:48:35,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-14 01:48:36,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-14 01:48:36,097 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:48:36,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:48:36,097 INFO L85 PathProgramCache]: Analyzing trace with hash -125844252, now seen corresponding path program 1 times [2022-07-14 01:48:36,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:48:36,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410504803] [2022-07-14 01:48:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:48:36,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:48:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:48:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:48:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:48:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:48:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:48:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:48:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:48:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:48:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:48:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 01:48:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 01:48:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-14 01:48:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-14 01:48:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:48:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 01:48:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-14 01:48:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-14 01:48:36,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:48:36,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410504803] [2022-07-14 01:48:36,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410504803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 01:48:36,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434523665] [2022-07-14 01:48:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:48:36,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:48:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:48:36,476 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 01:48:36,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-14 01:48:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:48:37,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 3165 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 01:48:37,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:48:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-14 01:48:37,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:48:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-14 01:48:37,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434523665] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:48:37,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 01:48:37,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-07-14 01:48:37,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474081339] [2022-07-14 01:48:37,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 01:48:37,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-14 01:48:37,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:48:37,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-14 01:48:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-07-14 01:48:37,603 INFO L87 Difference]: Start difference. First operand 71646 states and 101541 transitions. Second operand has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 15 states have internal predecessors, (134), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-14 01:49:16,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:49:16,906 INFO L93 Difference]: Finished difference Result 209738 states and 296653 transitions. [2022-07-14 01:49:16,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-07-14 01:49:16,908 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 15 states have internal predecessors, (134), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 138 [2022-07-14 01:49:16,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:49:17,716 INFO L225 Difference]: With dead ends: 209738 [2022-07-14 01:49:17,717 INFO L226 Difference]: Without dead ends: 137541 [2022-07-14 01:49:17,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6809 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2752, Invalid=15338, Unknown=0, NotChecked=0, Total=18090 [2022-07-14 01:49:17,954 INFO L413 NwaCegarLoop]: 3097 mSDtfsCounter, 10327 mSDsluCounter, 15776 mSDsCounter, 0 mSdLazyCounter, 41766 mSolverCounterSat, 8031 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10692 SdHoareTripleChecker+Valid, 18873 SdHoareTripleChecker+Invalid, 49797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 8031 IncrementalHoareTripleChecker+Valid, 41766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2022-07-14 01:49:17,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10692 Valid, 18873 Invalid, 49797 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [8031 Valid, 41766 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time] [2022-07-14 01:49:18,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137541 states. [2022-07-14 01:49:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137541 to 113955. [2022-07-14 01:49:22,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113955 states, 78483 states have (on average 1.319330300829479) internal successors, (103545), 81647 states have internal predecessors, (103545), 27969 states have call successors, (27969), 7318 states have call predecessors, (27969), 7502 states have return successors, (29603), 27119 states have call predecessors, (29603), 27968 states have call successors, (29603) [2022-07-14 01:49:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113955 states to 113955 states and 161117 transitions. [2022-07-14 01:49:23,059 INFO L78 Accepts]: Start accepts. Automaton has 113955 states and 161117 transitions. Word has length 138 [2022-07-14 01:49:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:49:23,061 INFO L495 AbstractCegarLoop]: Abstraction has 113955 states and 161117 transitions. [2022-07-14 01:49:23,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 15 states have internal predecessors, (134), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-14 01:49:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 113955 states and 161117 transitions. [2022-07-14 01:49:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-14 01:49:23,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:49:23,065 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:49:23,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-14 01:49:23,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:49:23,266 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:49:23,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:49:23,266 INFO L85 PathProgramCache]: Analyzing trace with hash -99820461, now seen corresponding path program 1 times [2022-07-14 01:49:23,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:49:23,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937539817] [2022-07-14 01:49:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:49:23,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:49:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:49:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:49:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:49:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:49:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:49:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:49:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:49:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:49:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:49:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-14 01:49:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 01:49:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-14 01:49:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-14 01:49:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:49:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-14 01:49:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 01:49:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-14 01:49:23,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:49:23,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937539817] [2022-07-14 01:49:23,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937539817] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 01:49:23,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905301755] [2022-07-14 01:49:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:49:23,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:49:23,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:49:23,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 01:49:23,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-14 01:49:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:49:24,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 3167 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 01:49:24,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:49:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-14 01:49:24,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:49:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-14 01:49:24,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905301755] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:49:24,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 01:49:24,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-07-14 01:49:24,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089481714] [2022-07-14 01:49:24,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 01:49:24,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-14 01:49:24,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:49:24,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-14 01:49:24,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-07-14 01:49:24,835 INFO L87 Difference]: Start difference. First operand 113955 states and 161117 transitions. Second operand has 23 states, 23 states have (on average 5.913043478260869) internal successors, (136), 15 states have internal predecessors, (136), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-14 01:50:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:50:04,981 INFO L93 Difference]: Finished difference Result 297026 states and 419000 transitions. [2022-07-14 01:50:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-07-14 01:50:04,982 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.913043478260869) internal successors, (136), 15 states have internal predecessors, (136), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 139 [2022-07-14 01:50:04,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:50:05,911 INFO L225 Difference]: With dead ends: 297026 [2022-07-14 01:50:05,911 INFO L226 Difference]: Without dead ends: 182268 [2022-07-14 01:50:06,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 316 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6850 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2752, Invalid=15338, Unknown=0, NotChecked=0, Total=18090 [2022-07-14 01:50:06,534 INFO L413 NwaCegarLoop]: 3081 mSDtfsCounter, 10656 mSDsluCounter, 13137 mSDsCounter, 0 mSdLazyCounter, 37718 mSolverCounterSat, 7937 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11019 SdHoareTripleChecker+Valid, 16218 SdHoareTripleChecker+Invalid, 45655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7937 IncrementalHoareTripleChecker+Valid, 37718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time [2022-07-14 01:50:06,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11019 Valid, 16218 Invalid, 45655 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7937 Valid, 37718 Invalid, 0 Unknown, 0 Unchecked, 28.8s Time] [2022-07-14 01:50:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182268 states. [2022-07-14 01:50:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182268 to 150073. [2022-07-14 01:50:13,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150073 states, 103319 states have (on average 1.3176085715115322) internal successors, (136134), 107339 states have internal predecessors, (136134), 36846 states have call successors, (36846), 9735 states have call predecessors, (36846), 9907 states have return successors, (38619), 35759 states have call predecessors, (38619), 36845 states have call successors, (38619) [2022-07-14 01:50:13,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150073 states to 150073 states and 211599 transitions. [2022-07-14 01:50:13,941 INFO L78 Accepts]: Start accepts. Automaton has 150073 states and 211599 transitions. Word has length 139 [2022-07-14 01:50:13,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:50:13,941 INFO L495 AbstractCegarLoop]: Abstraction has 150073 states and 211599 transitions. [2022-07-14 01:50:13,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.913043478260869) internal successors, (136), 15 states have internal predecessors, (136), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-14 01:50:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 150073 states and 211599 transitions. [2022-07-14 01:50:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-07-14 01:50:13,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:50:13,958 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:50:13,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-14 01:50:14,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:50:14,183 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:50:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:50:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash 933903265, now seen corresponding path program 1 times [2022-07-14 01:50:14,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:50:14,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194047391] [2022-07-14 01:50:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:50:14,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:50:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:50:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:50:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:50:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 01:50:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:50:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:50:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 01:50:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:50:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:50:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 01:50:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:50:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:50:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-14 01:50:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:50:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:50:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-14 01:50:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:50:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-14 01:50:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-14 01:50:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 01:50:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-14 01:50:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 01:50:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 01:50:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-14 01:50:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-14 01:50:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:50:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:50:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 01:50:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:50:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-14 01:50:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-14 01:50:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:50:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-14 01:50:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-14 01:50:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:50:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-14 01:50:15,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:50:15,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194047391] [2022-07-14 01:50:15,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194047391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:50:15,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:50:15,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 01:50:15,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760743792] [2022-07-14 01:50:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:50:15,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 01:50:15,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:50:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 01:50:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-14 01:50:15,107 INFO L87 Difference]: Start difference. First operand 150073 states and 211599 transitions. Second operand has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (31), 8 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)