./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--usb--serial--mos7840.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.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 c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 09:32:57,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 09:32:57,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 09:32:57,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 09:32:57,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 09:32:57,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 09:32:57,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 09:32:57,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 09:32:57,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 09:32:57,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 09:32:57,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 09:32:57,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 09:32:57,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 09:32:57,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 09:32:57,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 09:32:57,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 09:32:57,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 09:32:57,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 09:32:57,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 09:32:57,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 09:32:57,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 09:32:57,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 09:32:57,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 09:32:57,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 09:32:57,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 09:32:57,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 09:32:57,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 09:32:57,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 09:32:57,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 09:32:57,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 09:32:57,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 09:32:57,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 09:32:57,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 09:32:57,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 09:32:57,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 09:32:57,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 09:32:57,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 09:32:57,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 09:32:57,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 09:32:57,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 09:32:57,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 09:32:57,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 09:32:57,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 09:32:57,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 09:32:57,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 09:32:57,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 09:32:57,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 09:32:57,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 09:32:57,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 09:32:57,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 09:32:57,633 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 09:32:57,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 09:32:57,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 09:32:57,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 09:32:57,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 09:32:57,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 09:32:57,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 09:32:57,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 09:32:57,635 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 09:32:57,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 09:32:57,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 09:32:57,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 09:32:57,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 09:32:57,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 09:32:57,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 09:32:57,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 09:32:57,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 09:32:57,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 09:32:57,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 09:32:57,637 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 09:32:57,637 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 09:32:57,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 09:32:57,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 09:32:57,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2021-12-18 09:32:57,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 09:32:57,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 09:32:57,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 09:32:57,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 09:32:57,848 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 09:32:57,849 INFO L432 ainManager$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--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-12-18 09:32:57,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b04c5d5/b74e1a14c6b44d0abc4435d6397fd831/FLAG7267cd488 [2021-12-18 09:32:58,520 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 09:32:58,520 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--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-12-18 09:32:58,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b04c5d5/b74e1a14c6b44d0abc4435d6397fd831/FLAG7267cd488 [2021-12-18 09:32:58,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b04c5d5/b74e1a14c6b44d0abc4435d6397fd831 [2021-12-18 09:32:58,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 09:32:58,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 09:32:58,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 09:32:58,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 09:32:58,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 09:32:58,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:32:58" (1/1) ... [2021-12-18 09:32:58,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a9d5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:32:58, skipping insertion in model container [2021-12-18 09:32:58,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:32:58" (1/1) ... [2021-12-18 09:32:58,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 09:32:59,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 09:32:59,970 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--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2021-12-18 09:32:59,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 09:33:00,024 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 09:33:00,293 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--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2021-12-18 09:33:00,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 09:33:00,336 INFO L208 MainTranslator]: Completed translation [2021-12-18 09:33:00,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:33:00 WrapperNode [2021-12-18 09:33:00,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 09:33:00,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 09:33:00,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 09:33:00,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 09:33:00,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:33:00" (1/1) ... [2021-12-18 09:33:00,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:33:00" (1/1) ... [2021-12-18 09:33:00,554 INFO L137 Inliner]: procedures = 191, calls = 3778, calls flagged for inlining = 80, calls inlined = 67, statements flattened = 6858 [2021-12-18 09:33:00,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 09:33:00,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 09:33:00,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 09:33:00,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 09:33:00,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:33:00" (1/1) ... [2021-12-18 09:33:00,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:33:00" (1/1) ... [2021-12-18 09:33:00,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:33:00" (1/1) ... [2021-12-18 09:33:00,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:33:00" (1/1) ... [2021-12-18 09:33:00,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:33:00" (1/1) ... [2021-12-18 09:33:00,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:33:00" (1/1) ... [2021-12-18 09:33:00,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:33:00" (1/1) ... [2021-12-18 09:33:00,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 09:33:00,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 09:33:00,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 09:33:00,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 09:33:00,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:33:00" (1/1) ... [2021-12-18 09:33:00,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 09:33:00,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:33:00,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 09:33:00,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 09:33:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_probe [2021-12-18 09:33:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_probe [2021-12-18 09:33:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 09:33:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_reg_sync [2021-12-18 09:33:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_reg_sync [2021-12-18 09:33:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-18 09:33:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-18 09:33:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_reg_sync [2021-12-18 09:33:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_reg_sync [2021-12-18 09:33:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 09:33:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 09:33:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 09:33:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 09:33:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 09:33:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 09:33:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 09:33:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write [2021-12-18 09:33:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write [2021-12-18 09:33:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-18 09:33:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-18 09:33:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_ioctl [2021-12-18 09:33:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_ioctl [2021-12-18 09:33:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_tiocmiwait [2021-12-18 09:33:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_tiocmiwait [2021-12-18 09:33:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-18 09:33:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-18 09:33:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2021-12-18 09:33:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2021-12-18 09:33:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-18 09:33:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-18 09:33:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 09:33:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 09:33:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_port_private [2021-12-18 09:33:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_port_private [2021-12-18 09:33:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-18 09:33:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-18 09:33:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-18 09:33:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-18 09:33:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-12-18 09:33:00,862 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-12-18 09:33:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_uart_reg [2021-12-18 09:33:00,862 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_uart_reg [2021-12-18 09:33:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2021-12-18 09:33:00,862 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2021-12-18 09:33:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 09:33:00,863 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 09:33:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-18 09:33:00,863 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-18 09:33:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_usb_serial [2021-12-18 09:33:00,863 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_usb_serial [2021-12-18 09:33:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_get_icount [2021-12-18 09:33:00,863 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_get_icount [2021-12-18 09:33:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 09:33:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_async [2021-12-18 09:33:00,864 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_async [2021-12-18 09:33:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-18 09:33:00,864 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-18 09:33:00,865 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-18 09:33:00,865 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-18 09:33:00,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 09:33:00,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 09:33:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_termios [2021-12-18 09:33:00,866 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_termios [2021-12-18 09:33:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 09:33:00,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 09:33:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_sync [2021-12-18 09:33:00,866 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_sync [2021-12-18 09:33:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_3 [2021-12-18 09:33:00,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_3 [2021-12-18 09:33:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 09:33:00,867 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 09:33:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 09:33:00,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 09:33:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 09:33:00,868 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 09:33:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_chars_in_buffer [2021-12-18 09:33:00,868 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_chars_in_buffer [2021-12-18 09:33:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 09:33:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-18 09:33:00,868 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-18 09:33:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_throttle [2021-12-18 09:33:00,868 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_throttle [2021-12-18 09:33:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-18 09:33:00,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-18 09:33:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 09:33:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2021-12-18 09:33:00,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2021-12-18 09:33:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-12-18 09:33:00,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-12-18 09:33:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 09:33:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 09:33:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-18 09:33:00,870 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-18 09:33:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit_lock [2021-12-18 09:33:00,870 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit_lock [2021-12-18 09:33:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_uart_reg [2021-12-18 09:33:00,871 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_uart_reg [2021-12-18 09:33:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 09:33:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-18 09:33:00,872 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-18 09:33:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-18 09:33:00,872 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-18 09:33:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-18 09:33:00,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-18 09:33:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-18 09:33:00,873 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-18 09:33:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_paranoia_check [2021-12-18 09:33:00,873 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_paranoia_check [2021-12-18 09:33:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_serial_paranoia_check [2021-12-18 09:33:00,873 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_serial_paranoia_check [2021-12-18 09:33:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 09:33:00,873 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 09:33:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_led_activity [2021-12-18 09:33:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_led_activity [2021-12-18 09:33:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_bulk_in_callback [2021-12-18 09:33:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_bulk_in_callback [2021-12-18 09:33:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write_room [2021-12-18 09:33:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write_room [2021-12-18 09:33:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 09:33:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 09:33:00,915 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_calc_num_ports [2021-12-18 09:33:00,915 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_calc_num_ports [2021-12-18 09:33:00,915 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_break [2021-12-18 09:33:00,915 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_break [2021-12-18 09:33:00,915 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmset [2021-12-18 09:33:00,915 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmset [2021-12-18 09:33:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmget [2021-12-18 09:33:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmget [2021-12-18 09:33:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-18 09:33:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-18 09:33:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_port_private [2021-12-18 09:33:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_port_private [2021-12-18 09:33:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_unthrottle [2021-12-18 09:33:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_unthrottle [2021-12-18 09:33:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 09:33:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 09:33:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 09:33:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-18 09:33:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-18 09:33:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-18 09:33:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-18 09:33:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_remove [2021-12-18 09:33:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_remove [2021-12-18 09:33:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 09:33:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 09:33:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 09:33:01,449 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 09:33:01,451 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 09:33:03,287 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 09:33:06,564 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 09:33:06,584 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 09:33:06,585 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 09:33:06,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:33:06 BoogieIcfgContainer [2021-12-18 09:33:06,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 09:33:06,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 09:33:06,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 09:33:06,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 09:33:06,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 09:32:58" (1/3) ... [2021-12-18 09:33:06,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217e72da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:33:06, skipping insertion in model container [2021-12-18 09:33:06,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:33:00" (2/3) ... [2021-12-18 09:33:06,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217e72da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:33:06, skipping insertion in model container [2021-12-18 09:33:06,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:33:06" (3/3) ... [2021-12-18 09:33:06,594 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-12-18 09:33:06,600 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 09:33:06,600 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 09:33:06,635 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 09:33:06,639 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 09:33:06,639 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 09:33:06,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 1732 states, 1231 states have (on average 1.3899268887083671) internal successors, (1711), 1254 states have internal predecessors, (1711), 435 states have call successors, (435), 65 states have call predecessors, (435), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) [2021-12-18 09:33:06,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-18 09:33:06,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:33:06,705 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:33:06,705 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:33:06,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:33:06,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2101310704, now seen corresponding path program 1 times [2021-12-18 09:33:06,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:33:06,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726106548] [2021-12-18 09:33:06,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:33:06,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:33:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:33:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:33:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:33:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:33:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 09:33:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 09:33:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 09:33:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 09:33:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 09:33:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 09:33:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 09:33:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-18 09:33:07,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:33:07,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726106548] [2021-12-18 09:33:07,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726106548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:33:07,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:33:07,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 09:33:07,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207688180] [2021-12-18 09:33:07,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:33:07,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 09:33:07,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:33:07,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 09:33:07,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 09:33:07,592 INFO L87 Difference]: Start difference. First operand has 1732 states, 1231 states have (on average 1.3899268887083671) internal successors, (1711), 1254 states have internal predecessors, (1711), 435 states have call successors, (435), 65 states have call predecessors, (435), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-18 09:33:17,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:33:17,796 INFO L93 Difference]: Finished difference Result 3655 states and 5610 transitions. [2021-12-18 09:33:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 09:33:17,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 161 [2021-12-18 09:33:17,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:33:17,817 INFO L225 Difference]: With dead ends: 3655 [2021-12-18 09:33:17,817 INFO L226 Difference]: Without dead ends: 1913 [2021-12-18 09:33:17,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-18 09:33:17,835 INFO L933 BasicCegarLoop]: 2441 mSDtfsCounter, 517 mSDsluCounter, 3630 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 6071 SdHoareTripleChecker+Invalid, 3452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-12-18 09:33:17,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 6071 Invalid, 3452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2021-12-18 09:33:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2021-12-18 09:33:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1717. [2021-12-18 09:33:17,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1223 states have (on average 1.3851185609157808) internal successors, (1694), 1239 states have internal predecessors, (1694), 430 states have call successors, (430), 64 states have call predecessors, (430), 63 states have return successors, (429), 423 states have call predecessors, (429), 429 states have call successors, (429) [2021-12-18 09:33:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2553 transitions. [2021-12-18 09:33:17,974 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2553 transitions. Word has length 161 [2021-12-18 09:33:17,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:33:17,974 INFO L470 AbstractCegarLoop]: Abstraction has 1717 states and 2553 transitions. [2021-12-18 09:33:17,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-18 09:33:17,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2553 transitions. [2021-12-18 09:33:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-18 09:33:17,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:33:17,983 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:33:17,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 09:33:17,983 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:33:17,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:33:17,984 INFO L85 PathProgramCache]: Analyzing trace with hash 146485736, now seen corresponding path program 1 times [2021-12-18 09:33:17,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:33:17,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858440260] [2021-12-18 09:33:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:33:17,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:33:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:33:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:33:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:33:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:33:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 09:33:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 09:33:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 09:33:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 09:33:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 09:33:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 09:33:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 09:33:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-18 09:33:18,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:33:18,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858440260] [2021-12-18 09:33:18,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858440260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:33:18,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:33:18,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 09:33:18,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123284361] [2021-12-18 09:33:18,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:33:18,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 09:33:18,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:33:18,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 09:33:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 09:33:18,449 INFO L87 Difference]: Start difference. First operand 1717 states and 2553 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-18 09:33:23,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:33:23,693 INFO L93 Difference]: Finished difference Result 3744 states and 5632 transitions. [2021-12-18 09:33:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 09:33:23,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 161 [2021-12-18 09:33:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:33:23,706 INFO L225 Difference]: With dead ends: 3744 [2021-12-18 09:33:23,706 INFO L226 Difference]: Without dead ends: 2059 [2021-12-18 09:33:23,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 09:33:23,716 INFO L933 BasicCegarLoop]: 2453 mSDtfsCounter, 1210 mSDsluCounter, 3438 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 1629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 5891 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1629 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-18 09:33:23,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 5891 Invalid, 3196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1629 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-18 09:33:23,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2021-12-18 09:33:23,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1853. [2021-12-18 09:33:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1325 states have (on average 1.3864150943396227) internal successors, (1837), 1350 states have internal predecessors, (1837), 449 states have call successors, (449), 79 states have call predecessors, (449), 78 states have return successors, (448), 436 states have call predecessors, (448), 448 states have call successors, (448) [2021-12-18 09:33:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2734 transitions. [2021-12-18 09:33:23,780 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2734 transitions. Word has length 161 [2021-12-18 09:33:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:33:23,781 INFO L470 AbstractCegarLoop]: Abstraction has 1853 states and 2734 transitions. [2021-12-18 09:33:23,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-18 09:33:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2734 transitions. [2021-12-18 09:33:23,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-18 09:33:23,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:33:23,783 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:33:23,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 09:33:23,784 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:33:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:33:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash 189098090, now seen corresponding path program 1 times [2021-12-18 09:33:23,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:33:23,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301334451] [2021-12-18 09:33:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:33:23,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:33:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:33:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:33:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:33:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:33:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 09:33:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 09:33:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 09:33:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 09:33:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 09:33:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 09:33:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 09:33:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 09:33:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 09:33:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-18 09:33:24,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:33:24,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301334451] [2021-12-18 09:33:24,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301334451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:33:24,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:33:24,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 09:33:24,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347502515] [2021-12-18 09:33:24,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:33:24,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 09:33:24,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:33:24,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 09:33:24,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-18 09:33:24,208 INFO L87 Difference]: Start difference. First operand 1853 states and 2734 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 09:33:39,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:33:39,601 INFO L93 Difference]: Finished difference Result 9819 states and 15076 transitions. [2021-12-18 09:33:39,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 09:33:39,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 170 [2021-12-18 09:33:39,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:33:39,635 INFO L225 Difference]: With dead ends: 9819 [2021-12-18 09:33:39,635 INFO L226 Difference]: Without dead ends: 8016 [2021-12-18 09:33:39,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-12-18 09:33:39,644 INFO L933 BasicCegarLoop]: 3596 mSDtfsCounter, 12035 mSDsluCounter, 8104 mSDsCounter, 0 mSdLazyCounter, 6715 mSolverCounterSat, 5824 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12920 SdHoareTripleChecker+Valid, 11700 SdHoareTripleChecker+Invalid, 12539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5824 IncrementalHoareTripleChecker+Valid, 6715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2021-12-18 09:33:39,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12920 Valid, 11700 Invalid, 12539 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5824 Valid, 6715 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2021-12-18 09:33:39,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8016 states. [2021-12-18 09:33:39,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8016 to 7271. [2021-12-18 09:33:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7271 states, 5220 states have (on average 1.389272030651341) internal successors, (7252), 5317 states have internal predecessors, (7252), 1745 states have call successors, (1745), 296 states have call predecessors, (1745), 305 states have return successors, (1903), 1705 states have call predecessors, (1903), 1744 states have call successors, (1903) [2021-12-18 09:33:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7271 states to 7271 states and 10900 transitions. [2021-12-18 09:33:39,870 INFO L78 Accepts]: Start accepts. Automaton has 7271 states and 10900 transitions. Word has length 170 [2021-12-18 09:33:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:33:39,872 INFO L470 AbstractCegarLoop]: Abstraction has 7271 states and 10900 transitions. [2021-12-18 09:33:39,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 09:33:39,875 INFO L276 IsEmpty]: Start isEmpty. Operand 7271 states and 10900 transitions. [2021-12-18 09:33:39,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-18 09:33:39,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:33:39,876 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:33:39,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 09:33:39,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:33:39,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:33:39,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1930991079, now seen corresponding path program 1 times [2021-12-18 09:33:39,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:33:39,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038639657] [2021-12-18 09:33:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:33:39,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:33:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:33:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:33:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:33:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:33:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 09:33:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 09:33:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 09:33:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 09:33:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 09:33:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 09:33:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 09:33:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 09:33:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 09:33:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-18 09:33:40,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:33:40,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038639657] [2021-12-18 09:33:40,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038639657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:33:40,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:33:40,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 09:33:40,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210175074] [2021-12-18 09:33:40,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:33:40,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 09:33:40,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:33:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 09:33:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-18 09:33:40,315 INFO L87 Difference]: Start difference. First operand 7271 states and 10900 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 09:33:57,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:33:57,293 INFO L93 Difference]: Finished difference Result 38983 states and 60341 transitions. [2021-12-18 09:33:57,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 09:33:57,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 171 [2021-12-18 09:33:57,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:33:57,427 INFO L225 Difference]: With dead ends: 38983 [2021-12-18 09:33:57,428 INFO L226 Difference]: Without dead ends: 31762 [2021-12-18 09:33:57,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-12-18 09:33:57,466 INFO L933 BasicCegarLoop]: 3595 mSDtfsCounter, 8558 mSDsluCounter, 11259 mSDsCounter, 0 mSdLazyCounter, 8121 mSolverCounterSat, 4040 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9446 SdHoareTripleChecker+Valid, 14854 SdHoareTripleChecker+Invalid, 12161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4040 IncrementalHoareTripleChecker+Valid, 8121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-12-18 09:33:57,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9446 Valid, 14854 Invalid, 12161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4040 Valid, 8121 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2021-12-18 09:33:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31762 states. [2021-12-18 09:33:58,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31762 to 29004. [2021-12-18 09:33:58,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29004 states, 20856 states have (on average 1.3884733410049865) internal successors, (28958), 21232 states have internal predecessors, (28958), 6920 states have call successors, (6920), 1166 states have call predecessors, (6920), 1227 states have return successors, (8109), 6787 states have call predecessors, (8109), 6919 states have call successors, (8109) [2021-12-18 09:33:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29004 states to 29004 states and 43987 transitions. [2021-12-18 09:33:58,525 INFO L78 Accepts]: Start accepts. Automaton has 29004 states and 43987 transitions. Word has length 171 [2021-12-18 09:33:58,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:33:58,528 INFO L470 AbstractCegarLoop]: Abstraction has 29004 states and 43987 transitions. [2021-12-18 09:33:58,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 09:33:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 29004 states and 43987 transitions. [2021-12-18 09:33:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-18 09:33:58,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:33:58,548 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:33:58,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 09:33:58,548 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:33:58,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:33:58,549 INFO L85 PathProgramCache]: Analyzing trace with hash -416497278, now seen corresponding path program 1 times [2021-12-18 09:33:58,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:33:58,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000189866] [2021-12-18 09:33:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:33:58,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:33:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:33:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:58,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:58,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:33:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:58,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:33:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:58,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:33:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:33:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 09:33:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 09:33:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 09:33:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 09:33:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 09:33:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 09:33:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 09:33:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:33:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 09:33:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 09:33:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:33:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-18 09:33:59,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:33:59,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000189866] [2021-12-18 09:33:59,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000189866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:33:59,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:33:59,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 09:33:59,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980347305] [2021-12-18 09:33:59,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:33:59,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 09:33:59,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:33:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 09:33:59,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-18 09:33:59,183 INFO L87 Difference]: Start difference. First operand 29004 states and 43987 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 09:34:12,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:34:12,831 INFO L93 Difference]: Finished difference Result 155624 states and 242538 transitions. [2021-12-18 09:34:12,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 09:34:12,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 172 [2021-12-18 09:34:12,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:34:13,557 INFO L225 Difference]: With dead ends: 155624 [2021-12-18 09:34:13,558 INFO L226 Difference]: Without dead ends: 126670 [2021-12-18 09:34:13,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-12-18 09:34:13,705 INFO L933 BasicCegarLoop]: 3589 mSDtfsCounter, 10575 mSDsluCounter, 8999 mSDsCounter, 0 mSdLazyCounter, 5339 mSolverCounterSat, 5307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11464 SdHoareTripleChecker+Valid, 12588 SdHoareTripleChecker+Invalid, 10646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5307 IncrementalHoareTripleChecker+Valid, 5339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-12-18 09:34:13,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11464 Valid, 12588 Invalid, 10646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5307 Valid, 5339 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2021-12-18 09:34:13,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126670 states. [2021-12-18 09:34:17,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126670 to 116108. [2021-12-18 09:34:17,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116108 states, 83580 states have (on average 1.3869825317061497) internal successors, (115924), 85028 states have internal predecessors, (115924), 27566 states have call successors, (27566), 4646 states have call predecessors, (27566), 4961 states have return successors, (34239), 27139 states have call predecessors, (34239), 27565 states have call successors, (34239) [2021-12-18 09:34:18,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116108 states to 116108 states and 177729 transitions. [2021-12-18 09:34:18,544 INFO L78 Accepts]: Start accepts. Automaton has 116108 states and 177729 transitions. Word has length 172 [2021-12-18 09:34:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:34:18,545 INFO L470 AbstractCegarLoop]: Abstraction has 116108 states and 177729 transitions. [2021-12-18 09:34:18,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 09:34:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 116108 states and 177729 transitions. [2021-12-18 09:34:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 09:34:18,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:34:18,546 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:34:18,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 09:34:18,546 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:34:18,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:34:18,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2100918897, now seen corresponding path program 1 times [2021-12-18 09:34:18,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:34:18,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479867552] [2021-12-18 09:34:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:34:18,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:34:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:34:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:34:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:34:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 09:34:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:34:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:34:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 09:34:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:34:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:34:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 09:34:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:34:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:34:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 09:34:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:34:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 09:34:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:34:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 09:34:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:34:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 09:34:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:34:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 09:34:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:34:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 09:34:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:34:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 09:34:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:34:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 09:34:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-18 09:34:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:34:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-18 09:34:18,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:34:18,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479867552] [2021-12-18 09:34:18,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479867552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:34:18,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:34:18,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 09:34:18,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143134432] [2021-12-18 09:34:18,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:34:18,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 09:34:18,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:34:18,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 09:34:18,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-18 09:34:18,990 INFO L87 Difference]: Start difference. First operand 116108 states and 177729 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 09:34:48,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:34:48,711 INFO L93 Difference]: Finished difference Result 617146 states and 968636 transitions. [2021-12-18 09:34:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 09:34:48,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 173 [2021-12-18 09:34:48,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:34:51,738 INFO L225 Difference]: With dead ends: 617146 [2021-12-18 09:34:51,738 INFO L226 Difference]: Without dead ends: 501088 [2021-12-18 09:34:52,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-12-18 09:34:52,555 INFO L933 BasicCegarLoop]: 3625 mSDtfsCounter, 9888 mSDsluCounter, 11831 mSDsCounter, 0 mSdLazyCounter, 8709 mSolverCounterSat, 4095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10773 SdHoareTripleChecker+Valid, 15456 SdHoareTripleChecker+Invalid, 12804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4095 IncrementalHoareTripleChecker+Valid, 8709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2021-12-18 09:34:52,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10773 Valid, 15456 Invalid, 12804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4095 Valid, 8709 Invalid, 0 Unknown, 0 Unchecked, 20.0s Time] [2021-12-18 09:34:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501088 states. [2021-12-18 09:35:07,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501088 to 460442.