./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 e19ca921 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-dev-e19ca92 [2021-12-22 15:19:23,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 15:19:23,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 15:19:23,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 15:19:23,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 15:19:23,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 15:19:23,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 15:19:23,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 15:19:23,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 15:19:23,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 15:19:23,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 15:19:23,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 15:19:23,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 15:19:23,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 15:19:23,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 15:19:23,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 15:19:23,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 15:19:23,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 15:19:23,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 15:19:23,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 15:19:23,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 15:19:23,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 15:19:23,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 15:19:23,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 15:19:23,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 15:19:23,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 15:19:23,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 15:19:23,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 15:19:23,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 15:19:23,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 15:19:23,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 15:19:23,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 15:19:23,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 15:19:23,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 15:19:23,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 15:19:23,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 15:19:23,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 15:19:23,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 15:19:23,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 15:19:23,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 15:19:23,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 15:19:23,895 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 15:19:23,919 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 15:19:23,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 15:19:23,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 15:19:23,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 15:19:23,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 15:19:23,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 15:19:23,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 15:19:23,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 15:19:23,921 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 15:19:23,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 15:19:23,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 15:19:23,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 15:19:23,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 15:19:23,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 15:19:23,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 15:19:23,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 15:19:23,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 15:19:23,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 15:19:23,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 15:19:23,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 15:19:23,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 15:19:23,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:19:23,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 15:19:23,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 15:19:23,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 15:19:23,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 15:19:23,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 15:19:23,925 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 15:19:23,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 15:19:23,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 15:19:23,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 15:19:23,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2021-12-22 15:19:24,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 15:19:24,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 15:19:24,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 15:19:24,117 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 15:19:24,128 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 15:19:24,130 INFO L432 ainManager$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 [2021-12-22 15:19:24,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3d0cd4e/0dd6e1b15b4d47119aa41cf384603fb4/FLAG03b1fcc0d [2021-12-22 15:19:24,768 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 15:19:24,769 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 [2021-12-22 15:19:24,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3d0cd4e/0dd6e1b15b4d47119aa41cf384603fb4/FLAG03b1fcc0d [2021-12-22 15:19:25,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3d0cd4e/0dd6e1b15b4d47119aa41cf384603fb4 [2021-12-22 15:19:25,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 15:19:25,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 15:19:25,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 15:19:25,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 15:19:25,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 15:19:25,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:19:25" (1/1) ... [2021-12-22 15:19:25,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58072dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:25, skipping insertion in model container [2021-12-22 15:19:25,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:19:25" (1/1) ... [2021-12-22 15:19:25,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 15:19:25,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 15:19:26,356 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] [2021-12-22 15:19:26,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:19:26,427 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 15:19:26,683 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] [2021-12-22 15:19:26,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:19:26,725 INFO L208 MainTranslator]: Completed translation [2021-12-22 15:19:26,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:26 WrapperNode [2021-12-22 15:19:26,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 15:19:26,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 15:19:26,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 15:19:26,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 15:19:26,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:26" (1/1) ... [2021-12-22 15:19:26,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:26" (1/1) ... [2021-12-22 15:19:26,951 INFO L137 Inliner]: procedures = 191, calls = 3778, calls flagged for inlining = 80, calls inlined = 67, statements flattened = 6858 [2021-12-22 15:19:26,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 15:19:26,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 15:19:26,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 15:19:26,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 15:19:26,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:26" (1/1) ... [2021-12-22 15:19:26,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:26" (1/1) ... [2021-12-22 15:19:27,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:26" (1/1) ... [2021-12-22 15:19:27,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:26" (1/1) ... [2021-12-22 15:19:27,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:26" (1/1) ... [2021-12-22 15:19:27,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:26" (1/1) ... [2021-12-22 15:19:27,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:26" (1/1) ... [2021-12-22 15:19:27,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 15:19:27,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 15:19:27,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 15:19:27,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 15:19:27,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:26" (1/1) ... [2021-12-22 15:19:27,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:19:27,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 15:19:27,325 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) [2021-12-22 15:19:27,357 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 [2021-12-22 15:19:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_probe [2021-12-22 15:19:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_probe [2021-12-22 15:19:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 15:19:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_reg_sync [2021-12-22 15:19:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_reg_sync [2021-12-22 15:19:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-22 15:19:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-22 15:19:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_reg_sync [2021-12-22 15:19:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_reg_sync [2021-12-22 15:19:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 15:19:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 15:19:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 15:19:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 15:19:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 15:19:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 15:19:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 15:19:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write [2021-12-22 15:19:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write [2021-12-22 15:19:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-22 15:19:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-22 15:19:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_ioctl [2021-12-22 15:19:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_ioctl [2021-12-22 15:19:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_tiocmiwait [2021-12-22 15:19:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_tiocmiwait [2021-12-22 15:19:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-22 15:19:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-22 15:19:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2021-12-22 15:19:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2021-12-22 15:19:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-22 15:19:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-22 15:19:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 15:19:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 15:19:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_port_private [2021-12-22 15:19:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_port_private [2021-12-22 15:19:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-22 15:19:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-22 15:19:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-22 15:19:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-22 15:19:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-12-22 15:19:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-12-22 15:19:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_uart_reg [2021-12-22 15:19:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_uart_reg [2021-12-22 15:19:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2021-12-22 15:19:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2021-12-22 15:19:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 15:19:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 15:19:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-22 15:19:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-22 15:19:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_usb_serial [2021-12-22 15:19:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_usb_serial [2021-12-22 15:19:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_get_icount [2021-12-22 15:19:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_get_icount [2021-12-22 15:19:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 15:19:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_async [2021-12-22 15:19:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_async [2021-12-22 15:19:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-22 15:19:27,381 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-22 15:19:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-22 15:19:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-22 15:19:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 15:19:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 15:19:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_termios [2021-12-22 15:19:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_termios [2021-12-22 15:19:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 15:19:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 15:19:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_sync [2021-12-22 15:19:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_sync [2021-12-22 15:19:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_3 [2021-12-22 15:19:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_3 [2021-12-22 15:19:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 15:19:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 15:19:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-22 15:19:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-22 15:19:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 15:19:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 15:19:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_chars_in_buffer [2021-12-22 15:19:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_chars_in_buffer [2021-12-22 15:19:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 15:19:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-22 15:19:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-22 15:19:27,385 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_throttle [2021-12-22 15:19:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_throttle [2021-12-22 15:19:27,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-22 15:19:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-22 15:19:27,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 15:19:27,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2021-12-22 15:19:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2021-12-22 15:19:27,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-12-22 15:19:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-12-22 15:19:27,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 15:19:27,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 15:19:27,386 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-22 15:19:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-22 15:19:27,386 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit_lock [2021-12-22 15:19:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit_lock [2021-12-22 15:19:27,387 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_uart_reg [2021-12-22 15:19:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_uart_reg [2021-12-22 15:19:27,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 15:19:27,387 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-22 15:19:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-22 15:19:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-22 15:19:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-22 15:19:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-22 15:19:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-22 15:19:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-22 15:19:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-22 15:19:27,389 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_paranoia_check [2021-12-22 15:19:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_paranoia_check [2021-12-22 15:19:27,389 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_serial_paranoia_check [2021-12-22 15:19:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_serial_paranoia_check [2021-12-22 15:19:27,389 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 15:19:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 15:19:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_led_activity [2021-12-22 15:19:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_led_activity [2021-12-22 15:19:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_bulk_in_callback [2021-12-22 15:19:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_bulk_in_callback [2021-12-22 15:19:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write_room [2021-12-22 15:19:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write_room [2021-12-22 15:19:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 15:19:27,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 15:19:27,393 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_calc_num_ports [2021-12-22 15:19:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_calc_num_ports [2021-12-22 15:19:27,393 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_break [2021-12-22 15:19:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_break [2021-12-22 15:19:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmset [2021-12-22 15:19:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmset [2021-12-22 15:19:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmget [2021-12-22 15:19:27,395 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmget [2021-12-22 15:19:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-22 15:19:27,399 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-22 15:19:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_port_private [2021-12-22 15:19:27,400 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_port_private [2021-12-22 15:19:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_unthrottle [2021-12-22 15:19:27,400 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_unthrottle [2021-12-22 15:19:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 15:19:27,400 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 15:19:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 15:19:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-22 15:19:27,400 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-22 15:19:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-22 15:19:27,400 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-22 15:19:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_remove [2021-12-22 15:19:27,401 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_remove [2021-12-22 15:19:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 15:19:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 15:19:27,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 15:19:27,973 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 15:19:27,992 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 15:19:29,265 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 15:19:33,683 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 15:19:33,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 15:19:33,704 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 15:19:33,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:19:33 BoogieIcfgContainer [2021-12-22 15:19:33,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 15:19:33,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 15:19:33,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 15:19:33,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 15:19:33,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:19:25" (1/3) ... [2021-12-22 15:19:33,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e557515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:19:33, skipping insertion in model container [2021-12-22 15:19:33,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:26" (2/3) ... [2021-12-22 15:19:33,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e557515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:19:33, skipping insertion in model container [2021-12-22 15:19:33,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:19:33" (3/3) ... [2021-12-22 15:19:33,713 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-12-22 15:19:33,717 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 15:19:33,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 15:19:33,760 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 15:19:33,765 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 [2021-12-22 15:19:33,766 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 15:19:33,806 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) [2021-12-22 15:19:33,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-22 15:19:33,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:19:33,819 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] [2021-12-22 15:19:33,819 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:19:33,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:19:33,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2101310704, now seen corresponding path program 1 times [2021-12-22 15:19:33,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:19:33,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243449765] [2021-12-22 15:19:33,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:19:33,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:19:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:19:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:19:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:19:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:19:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 15:19:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 15:19:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 15:19:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 15:19:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 15:19:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 15:19:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 15:19:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-22 15:19:34,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:19:34,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243449765] [2021-12-22 15:19:34,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243449765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:19:34,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:19:34,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 15:19:34,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930116180] [2021-12-22 15:19:34,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:19:34,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 15:19:34,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:19:34,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 15:19:34,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 15:19:34,764 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) [2021-12-22 15:19:44,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:19:44,723 INFO L93 Difference]: Finished difference Result 3655 states and 5610 transitions. [2021-12-22 15:19:44,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 15:19:44,728 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 [2021-12-22 15:19:44,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:19:44,756 INFO L225 Difference]: With dead ends: 3655 [2021-12-22 15:19:44,756 INFO L226 Difference]: Without dead ends: 1913 [2021-12-22 15:19:44,770 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 [2021-12-22 15:19:44,772 INFO L933 BasicCegarLoop]: 2445 mSDtfsCounter, 517 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 6084 SdHoareTripleChecker+Invalid, 3457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-12-22 15:19:44,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 6084 Invalid, 3457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1008 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2021-12-22 15:19:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2021-12-22 15:19:44,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1717. [2021-12-22 15:19:44,915 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) [2021-12-22 15:19:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2553 transitions. [2021-12-22 15:19:44,928 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2553 transitions. Word has length 161 [2021-12-22 15:19:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:19:44,928 INFO L470 AbstractCegarLoop]: Abstraction has 1717 states and 2553 transitions. [2021-12-22 15:19:44,928 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) [2021-12-22 15:19:44,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2553 transitions. [2021-12-22 15:19:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-22 15:19:44,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:19:44,937 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] [2021-12-22 15:19:44,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 15:19:44,938 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:19:44,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:19:44,939 INFO L85 PathProgramCache]: Analyzing trace with hash 146485736, now seen corresponding path program 1 times [2021-12-22 15:19:44,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:19:44,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911939662] [2021-12-22 15:19:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:19:44,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:19:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:19:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:19:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:19:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:19:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 15:19:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 15:19:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 15:19:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 15:19:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 15:19:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 15:19:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 15:19:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-22 15:19:45,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:19:45,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911939662] [2021-12-22 15:19:45,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911939662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:19:45,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:19:45,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:19:45,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081974057] [2021-12-22 15:19:45,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:19:45,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:19:45,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:19:45,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:19:45,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:19:45,361 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) [2021-12-22 15:19:50,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:19:50,916 INFO L93 Difference]: Finished difference Result 3744 states and 5632 transitions. [2021-12-22 15:19:50,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:19:50,917 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 [2021-12-22 15:19:50,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:19:50,931 INFO L225 Difference]: With dead ends: 3744 [2021-12-22 15:19:50,931 INFO L226 Difference]: Without dead ends: 2059 [2021-12-22 15:19:50,937 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 [2021-12-22 15:19:50,942 INFO L933 BasicCegarLoop]: 2458 mSDtfsCounter, 1210 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 1630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 5902 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1630 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-22 15:19:50,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 5902 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1630 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-22 15:19:50,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2021-12-22 15:19:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1853. [2021-12-22 15:19:51,006 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) [2021-12-22 15:19:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2734 transitions. [2021-12-22 15:19:51,015 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2734 transitions. Word has length 161 [2021-12-22 15:19:51,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:19:51,017 INFO L470 AbstractCegarLoop]: Abstraction has 1853 states and 2734 transitions. [2021-12-22 15:19:51,017 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) [2021-12-22 15:19:51,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2734 transitions. [2021-12-22 15:19:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-22 15:19:51,019 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:19:51,020 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] [2021-12-22 15:19:51,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 15:19:51,020 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:19:51,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:19:51,021 INFO L85 PathProgramCache]: Analyzing trace with hash 189098090, now seen corresponding path program 1 times [2021-12-22 15:19:51,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:19:51,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420225782] [2021-12-22 15:19:51,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:19:51,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:19:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:19:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:19:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:19:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:19:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 15:19:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 15:19:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 15:19:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 15:19:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 15:19:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 15:19:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 15:19:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 15:19:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-22 15:19:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-22 15:19:51,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:19:51,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420225782] [2021-12-22 15:19:51,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420225782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:19:51,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:19:51,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 15:19:51,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057018768] [2021-12-22 15:19:51,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:19:51,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 15:19:51,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:19:51,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 15:19:51,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-22 15:19:51,496 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) [2021-12-22 15:20:08,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:20:08,125 INFO L93 Difference]: Finished difference Result 9819 states and 15076 transitions. [2021-12-22 15:20:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 15:20:08,126 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 [2021-12-22 15:20:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:20:08,168 INFO L225 Difference]: With dead ends: 9819 [2021-12-22 15:20:08,169 INFO L226 Difference]: Without dead ends: 8016 [2021-12-22 15:20:08,179 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 [2021-12-22 15:20:08,185 INFO L933 BasicCegarLoop]: 3597 mSDtfsCounter, 12035 mSDsluCounter, 8108 mSDsCounter, 0 mSdLazyCounter, 6718 mSolverCounterSat, 5826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12924 SdHoareTripleChecker+Valid, 11705 SdHoareTripleChecker+Invalid, 12544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5826 IncrementalHoareTripleChecker+Valid, 6718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2021-12-22 15:20:08,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12924 Valid, 11705 Invalid, 12544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5826 Valid, 6718 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2021-12-22 15:20:08,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8016 states. [2021-12-22 15:20:08,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8016 to 7271. [2021-12-22 15:20:08,446 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) [2021-12-22 15:20:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7271 states to 7271 states and 10900 transitions. [2021-12-22 15:20:08,535 INFO L78 Accepts]: Start accepts. Automaton has 7271 states and 10900 transitions. Word has length 170 [2021-12-22 15:20:08,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:20:08,536 INFO L470 AbstractCegarLoop]: Abstraction has 7271 states and 10900 transitions. [2021-12-22 15:20:08,539 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) [2021-12-22 15:20:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 7271 states and 10900 transitions. [2021-12-22 15:20:08,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-22 15:20:08,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:20:08,541 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] [2021-12-22 15:20:08,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 15:20:08,541 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:20:08,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:20:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1930991079, now seen corresponding path program 1 times [2021-12-22 15:20:08,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:20:08,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552129504] [2021-12-22 15:20:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:20:08,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:20:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:20:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:20:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:20:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:20:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 15:20:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 15:20:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 15:20:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 15:20:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 15:20:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 15:20:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 15:20:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-22 15:20:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-22 15:20:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-22 15:20:08,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:20:08,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552129504] [2021-12-22 15:20:08,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552129504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:20:08,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:20:08,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 15:20:08,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159074880] [2021-12-22 15:20:08,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:20:08,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 15:20:08,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:20:08,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 15:20:08,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-22 15:20:08,989 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) [2021-12-22 15:20:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:20:27,233 INFO L93 Difference]: Finished difference Result 38983 states and 60341 transitions. [2021-12-22 15:20:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 15:20:27,234 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 [2021-12-22 15:20:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:20:27,385 INFO L225 Difference]: With dead ends: 38983 [2021-12-22 15:20:27,385 INFO L226 Difference]: Without dead ends: 31762 [2021-12-22 15:20:27,426 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 [2021-12-22 15:20:27,427 INFO L933 BasicCegarLoop]: 3596 mSDtfsCounter, 8558 mSDsluCounter, 11255 mSDsCounter, 0 mSdLazyCounter, 8118 mSolverCounterSat, 4041 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9442 SdHoareTripleChecker+Valid, 14851 SdHoareTripleChecker+Invalid, 12159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4041 IncrementalHoareTripleChecker+Valid, 8118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2021-12-22 15:20:27,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9442 Valid, 14851 Invalid, 12159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4041 Valid, 8118 Invalid, 0 Unknown, 0 Unchecked, 17.4s Time] [2021-12-22 15:20:27,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31762 states. [2021-12-22 15:20:28,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31762 to 29004. [2021-12-22 15:20:28,446 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) [2021-12-22 15:20:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29004 states to 29004 states and 43987 transitions. [2021-12-22 15:20:28,574 INFO L78 Accepts]: Start accepts. Automaton has 29004 states and 43987 transitions. Word has length 171 [2021-12-22 15:20:28,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:20:28,574 INFO L470 AbstractCegarLoop]: Abstraction has 29004 states and 43987 transitions. [2021-12-22 15:20:28,575 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) [2021-12-22 15:20:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 29004 states and 43987 transitions. [2021-12-22 15:20:28,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-22 15:20:28,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:20:28,577 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] [2021-12-22 15:20:28,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 15:20:28,577 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:20:28,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:20:28,578 INFO L85 PathProgramCache]: Analyzing trace with hash -416497278, now seen corresponding path program 1 times [2021-12-22 15:20:28,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:20:28,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554736230] [2021-12-22 15:20:28,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:20:28,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:20:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:28,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:20:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:28,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:28,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:20:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:20:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:20:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 15:20:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 15:20:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 15:20:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 15:20:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 15:20:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 15:20:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 15:20:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-22 15:20:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-22 15:20:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-22 15:20:29,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:20:29,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554736230] [2021-12-22 15:20:29,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554736230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:20:29,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:20:29,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 15:20:29,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991360121] [2021-12-22 15:20:29,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:20:29,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 15:20:29,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:20:29,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 15:20:29,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-22 15:20:29,141 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)