./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.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 ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:34:46,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:34:46,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:34:46,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:34:46,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:34:46,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:34:46,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:34:46,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:34:46,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:34:46,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:34:46,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:34:46,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:34:46,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:34:46,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:34:46,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:34:46,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:34:46,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:34:46,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:34:46,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:34:46,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:34:46,909 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:34:46,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:34:46,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:34:46,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:34:46,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:34:46,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:34:46,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:34:46,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:34:46,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:34:46,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:34:46,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:34:46,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:34:46,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:34:46,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:34:46,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:34:46,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:34:46,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:34:46,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:34:46,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:34:46,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:34:46,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:34:46,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:34:46,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:34:46,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:34:46,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:34:46,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:34:46,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:34:46,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:34:46,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:34:46,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:34:46,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:34:46,953 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:34:46,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:34:46,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:34:46,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:34:46,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:34:46,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:34:46,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:34:46,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:34:46,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:34:46,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:34:46,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:34:46,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:34:46,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:34:46,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:34:46,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:34:46,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:34:46,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:34:46,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:34:46,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:34:46,957 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:34:46,957 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:34:46,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:34:46,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 [2022-07-22 23:34:47,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:34:47,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:34:47,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:34:47,134 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:34:47,135 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:34:47,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-07-22 23:34:47,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91890eca/543e80629ce8470e83abd7375754ba68/FLAGcd6b6f21a [2022-07-22 23:34:47,829 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:34:47,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-07-22 23:34:47,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91890eca/543e80629ce8470e83abd7375754ba68/FLAGcd6b6f21a [2022-07-22 23:34:47,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91890eca/543e80629ce8470e83abd7375754ba68 [2022-07-22 23:34:47,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:34:47,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:34:47,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:34:47,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:34:47,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:34:47,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:34:47" (1/1) ... [2022-07-22 23:34:47,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ada4eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:47, skipping insertion in model container [2022-07-22 23:34:47,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:34:47" (1/1) ... [2022-07-22 23:34:47,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:34:48,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:34:49,727 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-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2022-07-22 23:34:49,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:34:49,870 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:34:50,223 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-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2022-07-22 23:34:50,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:34:50,356 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:34:50,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:50 WrapperNode [2022-07-22 23:34:50,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:34:50,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:34:50,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:34:50,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:34:50,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:50" (1/1) ... [2022-07-22 23:34:50,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:50" (1/1) ... [2022-07-22 23:34:50,618 INFO L137 Inliner]: procedures = 373, calls = 2971, calls flagged for inlining = 172, calls inlined = 164, statements flattened = 5915 [2022-07-22 23:34:50,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:34:50,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:34:50,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:34:50,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:34:50,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:50" (1/1) ... [2022-07-22 23:34:50,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:50" (1/1) ... [2022-07-22 23:34:50,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:50" (1/1) ... [2022-07-22 23:34:50,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:50" (1/1) ... [2022-07-22 23:34:50,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:50" (1/1) ... [2022-07-22 23:34:50,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:50" (1/1) ... [2022-07-22 23:34:50,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:50" (1/1) ... [2022-07-22 23:34:50,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:34:50,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:34:50,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:34:50,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:34:50,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:50" (1/1) ... [2022-07-22 23:34:50,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:34:50,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:34:50,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 23:34:51,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 23:34:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-07-22 23:34:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-07-22 23:34:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-07-22 23:34:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-07-22 23:34:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-07-22 23:34:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-07-22 23:34:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-07-22 23:34:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-07-22 23:34:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-22 23:34:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-22 23:34:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-22 23:34:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-22 23:34:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-22 23:34:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-22 23:34:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-22 23:34:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-22 23:34:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-07-22 23:34:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-07-22 23:34:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-07-22 23:34:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-07-22 23:34:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-07-22 23:34:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-07-22 23:34:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-07-22 23:34:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-07-22 23:34:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-07-22 23:34:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-07-22 23:34:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-07-22 23:34:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-07-22 23:34:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:34:51,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:34:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-07-22 23:34:51,062 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-07-22 23:34:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-07-22 23:34:51,062 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-07-22 23:34:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-07-22 23:34:51,062 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-07-22 23:34:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-07-22 23:34:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-07-22 23:34:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:34:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:34:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-22 23:34:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-22 23:34:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:34:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:34:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-07-22 23:34:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-07-22 23:34:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-07-22 23:34:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-07-22 23:34:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-07-22 23:34:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-07-22 23:34:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-07-22 23:34:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-07-22 23:34:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-22 23:34:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-22 23:34:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-22 23:34:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-22 23:34:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_get_by_index [2022-07-22 23:34:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_get_by_index [2022-07-22 23:34:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-07-22 23:34:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-07-22 23:34:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-07-22 23:34:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-07-22 23:34:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-07-22 23:34:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-07-22 23:34:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-07-22 23:34:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-07-22 23:34:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-07-22 23:34:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-07-22 23:34:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 23:34:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 23:34:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-07-22 23:34:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-07-22 23:34:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-22 23:34:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-22 23:34:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-22 23:34:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-22 23:34:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:34:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-22 23:34:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-22 23:34:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-07-22 23:34:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-07-22 23:34:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-07-22 23:34:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-07-22 23:34:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-07-22 23:34:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-07-22 23:34:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-07-22 23:34:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-07-22 23:34:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-07-22 23:34:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-07-22 23:34:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2022-07-22 23:34:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2022-07-22 23:34:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:34:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 23:34:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 23:34:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-22 23:34:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-07-22 23:34:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-07-22 23:34:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-07-22 23:34:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-07-22 23:34:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-22 23:34:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-22 23:34:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-07-22 23:34:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-07-22 23:34:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:34:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:34:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-07-22 23:34:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-07-22 23:34:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 23:34:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 23:34:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-22 23:34:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-22 23:34:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2022-07-22 23:34:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2022-07-22 23:34:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-22 23:34:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-22 23:34:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-22 23:34:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-22 23:34:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-07-22 23:34:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-07-22 23:34:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-07-22 23:34:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-07-22 23:34:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:34:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:34:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-22 23:34:51,075 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-22 23:34:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-07-22 23:34:51,075 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-07-22 23:34:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-07-22 23:34:51,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-07-22 23:34:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-22 23:34:51,075 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-22 23:34:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-07-22 23:34:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-07-22 23:34:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-22 23:34:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-22 23:34:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-22 23:34:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-22 23:34:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-07-22 23:34:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-07-22 23:34:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-22 23:34:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-22 23:34:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-07-22 23:34:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-07-22 23:34:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-07-22 23:34:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-07-22 23:34:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-07-22 23:34:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-07-22 23:34:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-07-22 23:34:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-07-22 23:34:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-07-22 23:34:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-07-22 23:34:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-07-22 23:34:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-07-22 23:34:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:34:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-07-22 23:34:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-07-22 23:34:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-07-22 23:34:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-07-22 23:34:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-22 23:34:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-22 23:34:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-07-22 23:34:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-07-22 23:34:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-07-22 23:34:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-07-22 23:34:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-22 23:34:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-22 23:34:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-22 23:34:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-22 23:34:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-07-22 23:34:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-07-22 23:34:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-07-22 23:34:51,081 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-07-22 23:34:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:34:51,081 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:34:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-07-22 23:34:51,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-07-22 23:34:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:34:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-07-22 23:34:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-07-22 23:34:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-07-22 23:34:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-22 23:34:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-22 23:34:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:34:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:34:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-07-22 23:34:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-07-22 23:34:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-07-22 23:34:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-07-22 23:34:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-07-22 23:34:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-07-22 23:34:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:34:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-07-22 23:34:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-07-22 23:34:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:34:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:34:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 23:34:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:34:51,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:34:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-22 23:34:51,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-22 23:34:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-07-22 23:34:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-07-22 23:34:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2022-07-22 23:34:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2022-07-22 23:34:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-22 23:34:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-22 23:34:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-07-22 23:34:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-07-22 23:34:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2022-07-22 23:34:51,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2022-07-22 23:34:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-22 23:34:51,086 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-22 23:34:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-07-22 23:34:51,086 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-07-22 23:34:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-07-22 23:34:51,086 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-07-22 23:34:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-22 23:34:51,087 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-22 23:34:51,087 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-07-22 23:34:51,087 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-07-22 23:34:51,087 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-22 23:34:51,087 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-22 23:34:51,087 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-07-22 23:34:51,087 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-07-22 23:34:51,087 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 23:34:51,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 23:34:51,088 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-07-22 23:34:51,088 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-07-22 23:34:51,088 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-22 23:34:51,088 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-22 23:34:51,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:34:51,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-07-22 23:34:51,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-07-22 23:34:51,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:34:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:34:51,089 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-07-22 23:34:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-07-22 23:34:51,089 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-07-22 23:34:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-07-22 23:34:51,807 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:34:51,810 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:34:59,023 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:34:59,047 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:34:59,048 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:34:59,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:34:59 BoogieIcfgContainer [2022-07-22 23:34:59,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:34:59,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:34:59,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:34:59,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:34:59,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:34:47" (1/3) ... [2022-07-22 23:34:59,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca8be36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:34:59, skipping insertion in model container [2022-07-22 23:34:59,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:50" (2/3) ... [2022-07-22 23:34:59,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca8be36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:34:59, skipping insertion in model container [2022-07-22 23:34:59,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:34:59" (3/3) ... [2022-07-22 23:34:59,064 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-07-22 23:34:59,078 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:34:59,082 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:34:59,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:34:59,170 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@611e8f75, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@47eb74f4 [2022-07-22 23:34:59,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:34:59,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 1845 states, 1279 states have (on average 1.3096168881939014) internal successors, (1675), 1313 states have internal predecessors, (1675), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) [2022-07-22 23:34:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-22 23:34:59,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:59,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:34:59,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:59,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:59,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1524047706, now seen corresponding path program 1 times [2022-07-22 23:34:59,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:34:59,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296290529] [2022-07-22 23:34:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:34:59,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:34:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:59,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:34:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:59,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:34:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:59,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:34:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:59,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:34:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:34:59,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:34:59,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296290529] [2022-07-22 23:34:59,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296290529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:34:59,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:34:59,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:34:59,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233922442] [2022-07-22 23:34:59,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:34:59,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:34:59,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:34:59,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:34:59,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:34:59,868 INFO L87 Difference]: Start difference. First operand has 1845 states, 1279 states have (on average 1.3096168881939014) internal successors, (1675), 1313 states have internal predecessors, (1675), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 23:35:08,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:08,032 INFO L93 Difference]: Finished difference Result 5926 states and 8748 transitions. [2022-07-22 23:35:08,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:35:08,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-07-22 23:35:08,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:08,075 INFO L225 Difference]: With dead ends: 5926 [2022-07-22 23:35:08,075 INFO L226 Difference]: Without dead ends: 4084 [2022-07-22 23:35:08,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:35:08,091 INFO L413 NwaCegarLoop]: 2513 mSDtfsCounter, 5448 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 5113 mSolverCounterSat, 3195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5764 SdHoareTripleChecker+Valid, 4175 SdHoareTripleChecker+Invalid, 8308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3195 IncrementalHoareTripleChecker+Valid, 5113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:08,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5764 Valid, 4175 Invalid, 8308 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3195 Valid, 5113 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-07-22 23:35:08,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2022-07-22 23:35:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 3549. [2022-07-22 23:35:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 2469 states have (on average 1.296881328473066) internal successors, (3202), 2526 states have internal predecessors, (3202), 839 states have call successors, (839), 220 states have call predecessors, (839), 240 states have return successors, (942), 821 states have call predecessors, (942), 823 states have call successors, (942) [2022-07-22 23:35:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 4983 transitions. [2022-07-22 23:35:08,357 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 4983 transitions. Word has length 32 [2022-07-22 23:35:08,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:08,357 INFO L495 AbstractCegarLoop]: Abstraction has 3549 states and 4983 transitions. [2022-07-22 23:35:08,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 23:35:08,358 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 4983 transitions. [2022-07-22 23:35:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-22 23:35:08,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:08,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:35:08,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:35:08,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:08,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1075164, now seen corresponding path program 1 times [2022-07-22 23:35:08,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:08,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850974108] [2022-07-22 23:35:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:08,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:35:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:35:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:35:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:08,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:35:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:35:08,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:08,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850974108] [2022-07-22 23:35:08,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850974108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:08,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:08,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:35:08,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580008575] [2022-07-22 23:35:08,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:08,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:35:08,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:08,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:35:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:35:08,537 INFO L87 Difference]: Start difference. First operand 3549 states and 4983 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 23:35:12,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:12,882 INFO L93 Difference]: Finished difference Result 4152 states and 5960 transitions. [2022-07-22 23:35:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:35:12,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-07-22 23:35:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:12,901 INFO L225 Difference]: With dead ends: 4152 [2022-07-22 23:35:12,901 INFO L226 Difference]: Without dead ends: 4149 [2022-07-22 23:35:12,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:35:12,903 INFO L413 NwaCegarLoop]: 2111 mSDtfsCounter, 3977 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 2114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4205 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 4572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2114 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:12,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4205 Valid, 3024 Invalid, 4572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2114 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-22 23:35:12,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2022-07-22 23:35:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 3548. [2022-07-22 23:35:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 2469 states have (on average 1.2964763061968407) internal successors, (3201), 2525 states have internal predecessors, (3201), 838 states have call successors, (838), 220 states have call predecessors, (838), 240 states have return successors, (942), 821 states have call predecessors, (942), 823 states have call successors, (942) [2022-07-22 23:35:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 4981 transitions. [2022-07-22 23:35:13,060 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 4981 transitions. Word has length 33 [2022-07-22 23:35:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:13,062 INFO L495 AbstractCegarLoop]: Abstraction has 3548 states and 4981 transitions. [2022-07-22 23:35:13,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 23:35:13,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 4981 transitions. [2022-07-22 23:35:13,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 23:35:13,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:13,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:35:13,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:35:13,064 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:13,065 INFO L85 PathProgramCache]: Analyzing trace with hash -35239011, now seen corresponding path program 1 times [2022-07-22 23:35:13,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:13,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193046380] [2022-07-22 23:35:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:13,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:13,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:35:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:13,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:35:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:13,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:35:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:35:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:13,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:35:13,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:13,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193046380] [2022-07-22 23:35:13,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193046380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:13,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:13,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:35:13,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346447673] [2022-07-22 23:35:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:13,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:35:13,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:35:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:35:13,298 INFO L87 Difference]: Start difference. First operand 3548 states and 4981 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 23:35:17,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:17,825 INFO L93 Difference]: Finished difference Result 4151 states and 5958 transitions. [2022-07-22 23:35:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:35:17,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-07-22 23:35:17,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:17,846 INFO L225 Difference]: With dead ends: 4151 [2022-07-22 23:35:17,846 INFO L226 Difference]: Without dead ends: 4148 [2022-07-22 23:35:17,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:35:17,850 INFO L413 NwaCegarLoop]: 2109 mSDtfsCounter, 3971 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 2119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4201 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 4573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2119 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:17,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4201 Valid, 3021 Invalid, 4573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2119 Valid, 2454 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-22 23:35:17,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-07-22 23:35:18,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3547. [2022-07-22 23:35:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3547 states, 2469 states have (on average 1.2960712839206157) internal successors, (3200), 2524 states have internal predecessors, (3200), 837 states have call successors, (837), 220 states have call predecessors, (837), 240 states have return successors, (942), 821 states have call predecessors, (942), 823 states have call successors, (942) [2022-07-22 23:35:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 4979 transitions. [2022-07-22 23:35:18,053 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 4979 transitions. Word has length 34 [2022-07-22 23:35:18,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:18,053 INFO L495 AbstractCegarLoop]: Abstraction has 3547 states and 4979 transitions. [2022-07-22 23:35:18,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 23:35:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 4979 transitions. [2022-07-22 23:35:18,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-22 23:35:18,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:18,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:35:18,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:35:18,054 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:18,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:18,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1094313401, now seen corresponding path program 1 times [2022-07-22 23:35:18,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:18,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666598673] [2022-07-22 23:35:18,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:18,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:35:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:35:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:18,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:35:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:18,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:35:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:35:18,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:18,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666598673] [2022-07-22 23:35:18,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666598673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:18,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:18,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:35:18,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212008765] [2022-07-22 23:35:18,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:18,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:35:18,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:35:18,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:35:18,223 INFO L87 Difference]: Start difference. First operand 3547 states and 4979 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 23:35:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:22,609 INFO L93 Difference]: Finished difference Result 4288 states and 6099 transitions. [2022-07-22 23:35:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:35:22,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-07-22 23:35:22,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:22,627 INFO L225 Difference]: With dead ends: 4288 [2022-07-22 23:35:22,628 INFO L226 Difference]: Without dead ends: 4269 [2022-07-22 23:35:22,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:35:22,630 INFO L413 NwaCegarLoop]: 2170 mSDtfsCounter, 3872 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 2079 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4081 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 4724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2079 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:22,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4081 Valid, 3157 Invalid, 4724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2079 Valid, 2645 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-22 23:35:22,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2022-07-22 23:35:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 3660. [2022-07-22 23:35:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 2557 states have (on average 1.2901838091513493) internal successors, (3299), 2609 states have internal predecessors, (3299), 840 states have call successors, (840), 242 states have call predecessors, (840), 262 states have return successors, (948), 827 states have call predecessors, (948), 829 states have call successors, (948) [2022-07-22 23:35:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5087 transitions. [2022-07-22 23:35:22,753 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5087 transitions. Word has length 35 [2022-07-22 23:35:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:22,753 INFO L495 AbstractCegarLoop]: Abstraction has 3660 states and 5087 transitions. [2022-07-22 23:35:22,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 23:35:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5087 transitions. [2022-07-22 23:35:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 23:35:22,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:22,757 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:35:22,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:35:22,757 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:22,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:22,758 INFO L85 PathProgramCache]: Analyzing trace with hash 515000665, now seen corresponding path program 1 times [2022-07-22 23:35:22,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:22,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415075948] [2022-07-22 23:35:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:22,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:35:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:22,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:35:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:35:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:22,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:35:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:35:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:35:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:35:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 23:35:22,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:22,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415075948] [2022-07-22 23:35:22,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415075948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:22,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:22,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:35:22,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798528087] [2022-07-22 23:35:22,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:22,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:35:22,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:22,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:35:22,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:35:22,956 INFO L87 Difference]: Start difference. First operand 3660 states and 5087 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:35:30,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:30,597 INFO L93 Difference]: Finished difference Result 8494 states and 12125 transitions. [2022-07-22 23:35:30,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:35:30,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2022-07-22 23:35:30,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:30,633 INFO L225 Difference]: With dead ends: 8494 [2022-07-22 23:35:30,634 INFO L226 Difference]: Without dead ends: 4992 [2022-07-22 23:35:30,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:35:30,659 INFO L413 NwaCegarLoop]: 2298 mSDtfsCounter, 3252 mSDsluCounter, 3277 mSDsCounter, 0 mSdLazyCounter, 6029 mSolverCounterSat, 2428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3482 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 8457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2428 IncrementalHoareTripleChecker+Valid, 6029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:30,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3482 Valid, 5575 Invalid, 8457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2428 Valid, 6029 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-07-22 23:35:30,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2022-07-22 23:35:30,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 4284. [2022-07-22 23:35:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 3032 states have (on average 1.3007915567282322) internal successors, (3944), 3075 states have internal predecessors, (3944), 975 states have call successors, (975), 242 states have call predecessors, (975), 276 states have return successors, (1133), 985 states have call predecessors, (1133), 964 states have call successors, (1133) [2022-07-22 23:35:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 6052 transitions. [2022-07-22 23:35:31,011 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 6052 transitions. Word has length 58 [2022-07-22 23:35:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:31,011 INFO L495 AbstractCegarLoop]: Abstraction has 4284 states and 6052 transitions. [2022-07-22 23:35:31,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:35:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 6052 transitions. [2022-07-22 23:35:31,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 23:35:31,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:31,018 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:35:31,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:35:31,019 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1001937349, now seen corresponding path program 1 times [2022-07-22 23:35:31,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:31,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338561453] [2022-07-22 23:35:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:31,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:31,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:35:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:35:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:31,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:35:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:31,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:35:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:31,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:35:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:35:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:31,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 23:35:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 23:35:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 23:35:31,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:31,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338561453] [2022-07-22 23:35:31,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338561453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:31,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:31,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:35:31,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596630750] [2022-07-22 23:35:31,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:31,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:35:31,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:35:31,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:35:31,264 INFO L87 Difference]: Start difference. First operand 4284 states and 6052 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 23:35:36,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:36,999 INFO L93 Difference]: Finished difference Result 9259 states and 13286 transitions. [2022-07-22 23:35:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:35:37,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-07-22 23:35:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:37,022 INFO L225 Difference]: With dead ends: 9259 [2022-07-22 23:35:37,023 INFO L226 Difference]: Without dead ends: 4994 [2022-07-22 23:35:37,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:35:37,042 INFO L413 NwaCegarLoop]: 2298 mSDtfsCounter, 2234 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 4734 mSolverCounterSat, 1559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 4918 SdHoareTripleChecker+Invalid, 6293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1559 IncrementalHoareTripleChecker+Valid, 4734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:37,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 4918 Invalid, 6293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1559 Valid, 4734 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-22 23:35:37,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4994 states. [2022-07-22 23:35:37,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4994 to 4285. [2022-07-22 23:35:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4285 states, 3033 states have (on average 1.3006923837784372) internal successors, (3945), 3076 states have internal predecessors, (3945), 975 states have call successors, (975), 242 states have call predecessors, (975), 276 states have return successors, (1133), 985 states have call predecessors, (1133), 964 states have call successors, (1133) [2022-07-22 23:35:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 6053 transitions. [2022-07-22 23:35:37,316 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 6053 transitions. Word has length 67 [2022-07-22 23:35:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:37,316 INFO L495 AbstractCegarLoop]: Abstraction has 4285 states and 6053 transitions. [2022-07-22 23:35:37,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 23:35:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 6053 transitions. [2022-07-22 23:35:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 23:35:37,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:37,320 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:35:37,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:35:37,321 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:37,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:37,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1602163945, now seen corresponding path program 1 times [2022-07-22 23:35:37,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:37,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026758939] [2022-07-22 23:35:37,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:37,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:35:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:35:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:35:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:35:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:35:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:35:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:35:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 23:35:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 23:35:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:37,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026758939] [2022-07-22 23:35:37,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026758939] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:35:37,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526604635] [2022-07-22 23:35:37,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:37,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:35:37,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:35:37,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:35:37,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 23:35:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:38,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 3049 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:35:38,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:35:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:35:38,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:35:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 23:35:38,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526604635] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:35:38,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:35:38,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-07-22 23:35:38,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388093176] [2022-07-22 23:35:38,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:35:38,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 23:35:38,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:38,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 23:35:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:35:38,374 INFO L87 Difference]: Start difference. First operand 4285 states and 6053 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:35:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:45,159 INFO L93 Difference]: Finished difference Result 9264 states and 13293 transitions. [2022-07-22 23:35:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:35:45,160 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 69 [2022-07-22 23:35:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:45,216 INFO L225 Difference]: With dead ends: 9264 [2022-07-22 23:35:45,216 INFO L226 Difference]: Without dead ends: 4999 [2022-07-22 23:35:45,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:35:45,234 INFO L413 NwaCegarLoop]: 2295 mSDtfsCounter, 2240 mSDsluCounter, 3526 mSDsCounter, 0 mSdLazyCounter, 6509 mSolverCounterSat, 1564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2470 SdHoareTripleChecker+Valid, 5821 SdHoareTripleChecker+Invalid, 8073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1564 IncrementalHoareTripleChecker+Valid, 6509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:45,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2470 Valid, 5821 Invalid, 8073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1564 Valid, 6509 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-22 23:35:45,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2022-07-22 23:35:45,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 4291. [2022-07-22 23:35:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4291 states, 3039 states have (on average 1.3000987166831195) internal successors, (3951), 3082 states have internal predecessors, (3951), 975 states have call successors, (975), 242 states have call predecessors, (975), 276 states have return successors, (1133), 985 states have call predecessors, (1133), 964 states have call successors, (1133) [2022-07-22 23:35:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4291 states to 4291 states and 6059 transitions. [2022-07-22 23:35:45,428 INFO L78 Accepts]: Start accepts. Automaton has 4291 states and 6059 transitions. Word has length 69 [2022-07-22 23:35:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:45,429 INFO L495 AbstractCegarLoop]: Abstraction has 4291 states and 6059 transitions. [2022-07-22 23:35:45,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:35:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4291 states and 6059 transitions. [2022-07-22 23:35:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 23:35:45,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:45,433 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:35:45,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 23:35:45,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:35:45,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:45,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:45,655 INFO L85 PathProgramCache]: Analyzing trace with hash 526315605, now seen corresponding path program 2 times [2022-07-22 23:35:45,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:45,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946471705] [2022-07-22 23:35:45,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:45,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:35:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:35:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:35:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:35:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:45,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:35:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:45,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:35:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 23:35:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:45,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:35:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 23:35:45,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:45,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946471705] [2022-07-22 23:35:45,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946471705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:45,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:45,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:35:45,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678987159] [2022-07-22 23:35:45,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:45,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:35:45,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:45,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:35:45,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:35:45,893 INFO L87 Difference]: Start difference. First operand 4291 states and 6059 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 23:35:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:54,217 INFO L93 Difference]: Finished difference Result 9329 states and 13474 transitions. [2022-07-22 23:35:54,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 23:35:54,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-07-22 23:35:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:54,235 INFO L225 Difference]: With dead ends: 9329 [2022-07-22 23:35:54,235 INFO L226 Difference]: Without dead ends: 5205 [2022-07-22 23:35:54,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:35:54,266 INFO L413 NwaCegarLoop]: 3533 mSDtfsCounter, 6047 mSDsluCounter, 2735 mSDsCounter, 0 mSdLazyCounter, 6111 mSolverCounterSat, 4475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6364 SdHoareTripleChecker+Valid, 6268 SdHoareTripleChecker+Invalid, 10586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4475 IncrementalHoareTripleChecker+Valid, 6111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:54,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6364 Valid, 6268 Invalid, 10586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4475 Valid, 6111 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-07-22 23:35:54,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2022-07-22 23:35:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 4212. [2022-07-22 23:35:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 2979 states have (on average 1.3037932192010742) internal successors, (3884), 3032 states have internal predecessors, (3884), 969 states have call successors, (969), 241 states have call predecessors, (969), 263 states have return successors, (1040), 957 states have call predecessors, (1040), 948 states have call successors, (1040) [2022-07-22 23:35:54,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 5893 transitions. [2022-07-22 23:35:54,463 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 5893 transitions. Word has length 75 [2022-07-22 23:35:54,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:54,464 INFO L495 AbstractCegarLoop]: Abstraction has 4212 states and 5893 transitions. [2022-07-22 23:35:54,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 23:35:54,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 5893 transitions. [2022-07-22 23:35:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 23:35:54,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:54,466 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:35:54,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:35:54,467 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1029372965, now seen corresponding path program 1 times [2022-07-22 23:35:54,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:54,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075237699] [2022-07-22 23:35:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:54,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:54,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:35:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:54,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:35:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:35:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:54,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:35:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:54,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:35:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:54,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:35:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 23:35:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:54,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:35:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 23:35:54,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:54,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075237699] [2022-07-22 23:35:54,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075237699] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:35:54,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593434191] [2022-07-22 23:35:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:54,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:35:54,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:35:54,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:35:54,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 23:35:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:55,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 3143 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 23:35:55,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:35:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 23:35:55,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:35:55,529 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 23:35:55,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593434191] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:35:55,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:35:55,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2022-07-22 23:35:55,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970835789] [2022-07-22 23:35:55,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:35:55,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 23:35:55,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:55,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 23:35:55,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:35:55,532 INFO L87 Difference]: Start difference. First operand 4212 states and 5893 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 13 states have internal predecessors, (79), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:36:04,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:36:04,279 INFO L93 Difference]: Finished difference Result 9398 states and 13384 transitions. [2022-07-22 23:36:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 23:36:04,291 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 13 states have internal predecessors, (79), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 79 [2022-07-22 23:36:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:36:04,308 INFO L225 Difference]: With dead ends: 9398 [2022-07-22 23:36:04,308 INFO L226 Difference]: Without dead ends: 5212 [2022-07-22 23:36:04,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-07-22 23:36:04,319 INFO L413 NwaCegarLoop]: 2301 mSDtfsCounter, 3263 mSDsluCounter, 6071 mSDsCounter, 0 mSdLazyCounter, 11505 mSolverCounterSat, 2434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3487 SdHoareTripleChecker+Valid, 8372 SdHoareTripleChecker+Invalid, 13939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2434 IncrementalHoareTripleChecker+Valid, 11505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:36:04,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3487 Valid, 8372 Invalid, 13939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2434 Valid, 11505 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-07-22 23:36:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2022-07-22 23:36:04,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 4224. [2022-07-22 23:36:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4224 states, 2991 states have (on average 1.3025743898361752) internal successors, (3896), 3044 states have internal predecessors, (3896), 969 states have call successors, (969), 241 states have call predecessors, (969), 263 states have return successors, (1040), 957 states have call predecessors, (1040), 948 states have call successors, (1040) [2022-07-22 23:36:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 5905 transitions. [2022-07-22 23:36:04,452 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 5905 transitions. Word has length 79 [2022-07-22 23:36:04,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:36:04,453 INFO L495 AbstractCegarLoop]: Abstraction has 4224 states and 5905 transitions. [2022-07-22 23:36:04,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 13 states have internal predecessors, (79), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:36:04,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 5905 transitions. [2022-07-22 23:36:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 23:36:04,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:36:04,457 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:36:04,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 23:36:04,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-22 23:36:04,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:36:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:36:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash -497810435, now seen corresponding path program 2 times [2022-07-22 23:36:04,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:36:04,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983912595] [2022-07-22 23:36:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:36:04,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:36:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:04,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:36:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:04,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:36:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:04,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:36:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:36:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:04,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:36:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:04,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:36:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:36:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:04,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 23:36:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 23:36:04,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:36:04,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983912595] [2022-07-22 23:36:04,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983912595] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:36:04,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075139221] [2022-07-22 23:36:04,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:36:04,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:36:04,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:36:04,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:36:05,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 23:36:05,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:36:05,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:36:05,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 3233 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 23:36:05,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:36:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 23:36:05,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:36:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 23:36:06,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075139221] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:36:06,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:36:06,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 28 [2022-07-22 23:36:06,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862793842] [2022-07-22 23:36:06,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:36:06,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-22 23:36:06,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:36:06,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-22 23:36:06,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2022-07-22 23:36:06,154 INFO L87 Difference]: Start difference. First operand 4224 states and 5905 transitions. Second operand has 28 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 25 states have internal predecessors, (103), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:36:12,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:36:12,996 INFO L93 Difference]: Finished difference Result 9422 states and 13414 transitions. [2022-07-22 23:36:12,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 23:36:12,996 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 25 states have internal predecessors, (103), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 91 [2022-07-22 23:36:12,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:36:13,032 INFO L225 Difference]: With dead ends: 9422 [2022-07-22 23:36:13,033 INFO L226 Difference]: Without dead ends: 5236 [2022-07-22 23:36:13,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2022-07-22 23:36:13,045 INFO L413 NwaCegarLoop]: 2301 mSDtfsCounter, 3284 mSDsluCounter, 4196 mSDsCounter, 0 mSdLazyCounter, 7895 mSolverCounterSat, 2440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3513 SdHoareTripleChecker+Valid, 6497 SdHoareTripleChecker+Invalid, 10335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2440 IncrementalHoareTripleChecker+Valid, 7895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:36:13,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3513 Valid, 6497 Invalid, 10335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2440 Valid, 7895 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-22 23:36:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236 states. [2022-07-22 23:36:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 4248. [2022-07-22 23:36:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4248 states, 3015 states have (on average 1.3001658374792704) internal successors, (3920), 3068 states have internal predecessors, (3920), 969 states have call successors, (969), 241 states have call predecessors, (969), 263 states have return successors, (1040), 957 states have call predecessors, (1040), 948 states have call successors, (1040) [2022-07-22 23:36:13,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4248 states to 4248 states and 5929 transitions. [2022-07-22 23:36:13,284 INFO L78 Accepts]: Start accepts. Automaton has 4248 states and 5929 transitions. Word has length 91 [2022-07-22 23:36:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:36:13,288 INFO L495 AbstractCegarLoop]: Abstraction has 4248 states and 5929 transitions. [2022-07-22 23:36:13,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 25 states have internal predecessors, (103), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:36:13,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4248 states and 5929 transitions. [2022-07-22 23:36:13,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 23:36:13,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:36:13,290 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:36:13,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-22 23:36:13,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:36:13,499 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:36:13,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:36:13,501 INFO L85 PathProgramCache]: Analyzing trace with hash 308086701, now seen corresponding path program 3 times [2022-07-22 23:36:13,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:36:13,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828858963] [2022-07-22 23:36:13,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:36:13,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:36:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:13,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:36:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:36:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:14,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:36:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:14,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:36:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:14,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:36:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:36:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:36:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:14,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 23:36:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 23:36:14,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:36:14,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828858963] [2022-07-22 23:36:14,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828858963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:36:14,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457093487] [2022-07-22 23:36:14,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 23:36:14,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:36:14,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:36:14,076 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:36:14,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 23:36:14,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 23:36:14,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:36:14,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 23:36:14,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:36:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2022-07-22 23:36:14,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:36:14,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457093487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:36:14,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:36:14,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [28] total 31 [2022-07-22 23:36:14,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8815726] [2022-07-22 23:36:14,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:36:14,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:36:14,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:36:14,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:36:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=617, Unknown=0, NotChecked=0, Total=930 [2022-07-22 23:36:14,841 INFO L87 Difference]: Start difference. First operand 4248 states and 5929 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 23:36:16,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:36:17,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:36:17,060 INFO L93 Difference]: Finished difference Result 8295 states and 11598 transitions. [2022-07-22 23:36:17,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:36:17,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 115 [2022-07-22 23:36:17,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:36:17,076 INFO L225 Difference]: With dead ends: 8295 [2022-07-22 23:36:17,077 INFO L226 Difference]: Without dead ends: 4232 [2022-07-22 23:36:17,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=733, Unknown=0, NotChecked=0, Total=1056 [2022-07-22 23:36:17,092 INFO L413 NwaCegarLoop]: 2547 mSDtfsCounter, 4 mSDsluCounter, 7619 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10166 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:36:17,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 10166 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 23:36:17,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2022-07-22 23:36:17,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 4232. [2022-07-22 23:36:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 3006 states have (on average 1.2997338656021291) internal successors, (3907), 3057 states have internal predecessors, (3907), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-22 23:36:17,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 5908 transitions. [2022-07-22 23:36:17,214 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 5908 transitions. Word has length 115 [2022-07-22 23:36:17,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:36:17,214 INFO L495 AbstractCegarLoop]: Abstraction has 4232 states and 5908 transitions. [2022-07-22 23:36:17,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 23:36:17,215 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 5908 transitions. [2022-07-22 23:36:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-22 23:36:17,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:36:17,218 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:36:17,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 23:36:17,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:36:17,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:36:17,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:36:17,432 INFO L85 PathProgramCache]: Analyzing trace with hash 773365027, now seen corresponding path program 1 times [2022-07-22 23:36:17,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:36:17,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675993169] [2022-07-22 23:36:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:36:17,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:36:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:17,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:36:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:17,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:36:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:36:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:17,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:36:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:36:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:17,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 23:36:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:17,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:36:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:17,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 23:36:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:17,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 23:36:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 23:36:17,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:36:17,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675993169] [2022-07-22 23:36:17,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675993169] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:36:17,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974268212] [2022-07-22 23:36:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:36:17,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:36:17,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:36:17,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:36:18,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 23:36:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:18,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 4277 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 23:36:18,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:36:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 6 proven. 484 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 23:36:19,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:36:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 23:36:19,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974268212] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:36:19,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:36:19,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 52 [2022-07-22 23:36:19,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954056032] [2022-07-22 23:36:19,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:36:19,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-22 23:36:19,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:36:19,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-22 23:36:19,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1183, Invalid=1469, Unknown=0, NotChecked=0, Total=2652 [2022-07-22 23:36:19,706 INFO L87 Difference]: Start difference. First operand 4232 states and 5908 transitions. Second operand has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 49 states have internal predecessors, (178), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:36:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:36:27,475 INFO L93 Difference]: Finished difference Result 9438 states and 13432 transitions. [2022-07-22 23:36:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-22 23:36:27,476 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 49 states have internal predecessors, (178), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2022-07-22 23:36:27,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:36:27,514 INFO L225 Difference]: With dead ends: 9438 [2022-07-22 23:36:27,518 INFO L226 Difference]: Without dead ends: 5268 [2022-07-22 23:36:27,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1193, Invalid=1669, Unknown=0, NotChecked=0, Total=2862 [2022-07-22 23:36:27,547 INFO L413 NwaCegarLoop]: 2286 mSDtfsCounter, 3320 mSDsluCounter, 5059 mSDsCounter, 0 mSdLazyCounter, 9729 mSolverCounterSat, 2442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3549 SdHoareTripleChecker+Valid, 7345 SdHoareTripleChecker+Invalid, 12171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2442 IncrementalHoareTripleChecker+Valid, 9729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:36:27,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3549 Valid, 7345 Invalid, 12171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2442 Valid, 9729 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-07-22 23:36:27,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2022-07-22 23:36:27,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 4280. [2022-07-22 23:36:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 3054 states have (on average 1.2950229207596595) internal successors, (3955), 3105 states have internal predecessors, (3955), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-22 23:36:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 5956 transitions. [2022-07-22 23:36:27,820 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 5956 transitions. Word has length 139 [2022-07-22 23:36:27,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:36:27,820 INFO L495 AbstractCegarLoop]: Abstraction has 4280 states and 5956 transitions. [2022-07-22 23:36:27,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 49 states have internal predecessors, (178), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:36:27,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 5956 transitions. [2022-07-22 23:36:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-22 23:36:27,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:36:27,823 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:36:27,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 23:36:28,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 23:36:28,047 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:36:28,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:36:28,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1584813187, now seen corresponding path program 2 times [2022-07-22 23:36:28,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:36:28,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803418636] [2022-07-22 23:36:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:36:28,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:36:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:29,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:36:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:29,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:36:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:36:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:36:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 23:36:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:29,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 23:36:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:29,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:29,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:29,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-22 23:36:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:29,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-22 23:36:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:29,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-22 23:36:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 23:36:29,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:36:29,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803418636] [2022-07-22 23:36:29,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803418636] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:36:29,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383644157] [2022-07-22 23:36:29,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:36:29,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:36:29,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:36:29,420 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:36:29,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 23:36:30,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:36:30,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:36:30,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 4637 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-22 23:36:30,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:36:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 6 proven. 2116 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 23:36:30,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:36:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 23:36:32,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383644157] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:36:32,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:36:32,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 49, 49] total 100 [2022-07-22 23:36:32,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590947055] [2022-07-22 23:36:32,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:36:32,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-07-22 23:36:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:36:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-07-22 23:36:32,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4663, Invalid=5237, Unknown=0, NotChecked=0, Total=9900 [2022-07-22 23:36:32,933 INFO L87 Difference]: Start difference. First operand 4280 states and 5956 transitions. Second operand has 100 states, 100 states have (on average 2.74) internal successors, (274), 97 states have internal predecessors, (274), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:36:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:36:38,943 INFO L93 Difference]: Finished difference Result 9534 states and 13552 transitions. [2022-07-22 23:36:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-07-22 23:36:38,944 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.74) internal successors, (274), 97 states have internal predecessors, (274), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 187 [2022-07-22 23:36:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:36:38,977 INFO L225 Difference]: With dead ends: 9534 [2022-07-22 23:36:38,985 INFO L226 Difference]: Without dead ends: 5364 [2022-07-22 23:36:39,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4673, Invalid=5629, Unknown=0, NotChecked=0, Total=10302 [2022-07-22 23:36:39,001 INFO L413 NwaCegarLoop]: 2286 mSDtfsCounter, 3392 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 6232 mSolverCounterSat, 2470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3617 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 8702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2470 IncrementalHoareTripleChecker+Valid, 6232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:36:39,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3617 Valid, 5532 Invalid, 8702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2470 Valid, 6232 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-22 23:36:39,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2022-07-22 23:36:39,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 4376. [2022-07-22 23:36:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 3150 states have (on average 1.286031746031746) internal successors, (4051), 3201 states have internal predecessors, (4051), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-22 23:36:39,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 6052 transitions. [2022-07-22 23:36:39,163 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 6052 transitions. Word has length 187 [2022-07-22 23:36:39,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:36:39,164 INFO L495 AbstractCegarLoop]: Abstraction has 4376 states and 6052 transitions. [2022-07-22 23:36:39,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.74) internal successors, (274), 97 states have internal predecessors, (274), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:36:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 6052 transitions. [2022-07-22 23:36:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-07-22 23:36:39,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:36:39,169 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:36:39,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 23:36:39,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:36:39,386 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:36:39,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:36:39,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1597963453, now seen corresponding path program 3 times [2022-07-22 23:36:39,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:36:39,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570618338] [2022-07-22 23:36:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:36:39,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:36:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:36:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:43,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:36:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:43,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:36:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:43,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:36:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:43,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 23:36:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:43,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 23:36:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:43,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:43,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-22 23:36:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-07-22 23:36:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:43,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-22 23:36:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8847 backedges. 2 proven. 8836 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 23:36:43,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:36:43,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570618338] [2022-07-22 23:36:43,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570618338] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:36:43,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010330679] [2022-07-22 23:36:43,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 23:36:43,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:36:43,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:36:43,531 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:36:43,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 23:36:44,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 23:36:44,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:36:44,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 23:36:44,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:36:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 8847 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8845 trivial. 0 not checked. [2022-07-22 23:36:44,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:36:44,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010330679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:36:44,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:36:44,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [100] total 103 [2022-07-22 23:36:44,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386829933] [2022-07-22 23:36:44,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:36:44,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:36:44,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:36:44,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:36:44,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4669, Invalid=5837, Unknown=0, NotChecked=0, Total=10506 [2022-07-22 23:36:44,704 INFO L87 Difference]: Start difference. First operand 4376 states and 6052 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:36:46,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:36:46,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:36:46,985 INFO L93 Difference]: Finished difference Result 8426 states and 11724 transitions. [2022-07-22 23:36:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:36:46,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 283 [2022-07-22 23:36:46,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:36:47,001 INFO L225 Difference]: With dead ends: 8426 [2022-07-22 23:36:47,001 INFO L226 Difference]: Without dead ends: 4376 [2022-07-22 23:36:47,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4679, Invalid=6241, Unknown=0, NotChecked=0, Total=10920 [2022-07-22 23:36:47,016 INFO L413 NwaCegarLoop]: 2532 mSDtfsCounter, 3 mSDsluCounter, 7583 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10115 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:36:47,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10115 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 23:36:47,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2022-07-22 23:36:47,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 4376. [2022-07-22 23:36:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 3150 states have (on average 1.2857142857142858) internal successors, (4050), 3201 states have internal predecessors, (4050), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-22 23:36:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 6051 transitions. [2022-07-22 23:36:47,226 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 6051 transitions. Word has length 283 [2022-07-22 23:36:47,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:36:47,227 INFO L495 AbstractCegarLoop]: Abstraction has 4376 states and 6051 transitions. [2022-07-22 23:36:47,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:36:47,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 6051 transitions. [2022-07-22 23:36:47,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-22 23:36:47,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:36:47,231 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:36:47,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 23:36:47,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:36:47,432 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:36:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:36:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1558495655, now seen corresponding path program 1 times [2022-07-22 23:36:47,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:36:47,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331329315] [2022-07-22 23:36:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:36:47,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:36:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:36:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:36:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:36:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:36:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 23:36:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 23:36:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-22 23:36:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-22 23:36:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-22 23:36:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-22 23:36:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8848 trivial. 0 not checked. [2022-07-22 23:36:47,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:36:47,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331329315] [2022-07-22 23:36:47,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331329315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:36:47,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:36:47,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 23:36:47,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626666827] [2022-07-22 23:36:47,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:36:47,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 23:36:47,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:36:47,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 23:36:47,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:36:47,827 INFO L87 Difference]: Start difference. First operand 4376 states and 6051 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:36:49,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:36:54,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:36:56,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:37:05,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:37:05,354 INFO L93 Difference]: Finished difference Result 9414 states and 13334 transitions. [2022-07-22 23:37:05,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 23:37:05,355 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 291 [2022-07-22 23:37:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:37:05,379 INFO L225 Difference]: With dead ends: 9414 [2022-07-22 23:37:05,379 INFO L226 Difference]: Without dead ends: 5364 [2022-07-22 23:37:05,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:37:05,398 INFO L413 NwaCegarLoop]: 2276 mSDtfsCounter, 3262 mSDsluCounter, 5957 mSDsCounter, 0 mSdLazyCounter, 11396 mSolverCounterSat, 2413 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3490 SdHoareTripleChecker+Valid, 8233 SdHoareTripleChecker+Invalid, 13812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2413 IncrementalHoareTripleChecker+Valid, 11396 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:37:05,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3490 Valid, 8233 Invalid, 13812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2413 Valid, 11396 Invalid, 3 Unknown, 0 Unchecked, 17.0s Time] [2022-07-22 23:37:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2022-07-22 23:37:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 4376. [2022-07-22 23:37:05,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 3150 states have (on average 1.2853968253968253) internal successors, (4049), 3201 states have internal predecessors, (4049), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-22 23:37:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 6050 transitions. [2022-07-22 23:37:05,624 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 6050 transitions. Word has length 291 [2022-07-22 23:37:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:37:05,624 INFO L495 AbstractCegarLoop]: Abstraction has 4376 states and 6050 transitions. [2022-07-22 23:37:05,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:37:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 6050 transitions. [2022-07-22 23:37:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-07-22 23:37:05,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:37:05,631 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:37:05,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 23:37:05,632 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:37:05,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:37:05,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1462228516, now seen corresponding path program 1 times [2022-07-22 23:37:05,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:37:05,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162622391] [2022-07-22 23:37:05,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:37:05,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:37:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:37:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:37:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:37:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:37:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 23:37:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 23:37:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:37:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:37:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-22 23:37:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-22 23:37:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-22 23:37:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-22 23:37:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2 proven. 8836 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 23:37:09,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:37:09,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162622391] [2022-07-22 23:37:09,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162622391] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:37:09,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936473955] [2022-07-22 23:37:09,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:37:09,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:37:09,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:37:09,824 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:37:09,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 23:37:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 5505 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-22 23:37:11,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:37:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 6 proven. 8836 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 23:37:11,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:37:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2 proven. 8836 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 23:37:20,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936473955] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:37:20,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:37:20,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 97, 97] total 196 [2022-07-22 23:37:20,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081585854] [2022-07-22 23:37:20,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:37:20,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2022-07-22 23:37:20,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:37:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2022-07-22 23:37:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18535, Invalid=19685, Unknown=0, NotChecked=0, Total=38220 [2022-07-22 23:37:20,320 INFO L87 Difference]: Start difference. First operand 4376 states and 6050 transitions. Second operand has 196 states, 196 states have (on average 2.413265306122449) internal successors, (473), 193 states have internal predecessors, (473), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:37:25,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:37:36,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:37:36,088 INFO L93 Difference]: Finished difference Result 9726 states and 13788 transitions. [2022-07-22 23:37:36,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-07-22 23:37:36,088 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 196 states have (on average 2.413265306122449) internal successors, (473), 193 states have internal predecessors, (473), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 294 [2022-07-22 23:37:36,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:37:36,107 INFO L225 Difference]: With dead ends: 9726 [2022-07-22 23:37:36,107 INFO L226 Difference]: Without dead ends: 5556 [2022-07-22 23:37:36,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=18545, Invalid=20461, Unknown=0, NotChecked=0, Total=39006 [2022-07-22 23:37:36,122 INFO L413 NwaCegarLoop]: 2277 mSDtfsCounter, 2518 mSDsluCounter, 8927 mSDsCounter, 0 mSdLazyCounter, 17674 mSolverCounterSat, 1645 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2742 SdHoareTripleChecker+Valid, 11204 SdHoareTripleChecker+Invalid, 19320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1645 IncrementalHoareTripleChecker+Valid, 17674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:37:36,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2742 Valid, 11204 Invalid, 19320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1645 Valid, 17674 Invalid, 1 Unknown, 0 Unchecked, 14.6s Time] [2022-07-22 23:37:36,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2022-07-22 23:37:36,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 4568. [2022-07-22 23:37:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4568 states, 3342 states have (on average 1.2690005984440456) internal successors, (4241), 3393 states have internal predecessors, (4241), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-22 23:37:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 6242 transitions. [2022-07-22 23:37:36,296 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 6242 transitions. Word has length 294 [2022-07-22 23:37:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:37:36,297 INFO L495 AbstractCegarLoop]: Abstraction has 4568 states and 6242 transitions. [2022-07-22 23:37:36,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 196 states have (on average 2.413265306122449) internal successors, (473), 193 states have internal predecessors, (473), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:37:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 6242 transitions. [2022-07-22 23:37:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-07-22 23:37:36,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:37:36,304 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:37:36,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 23:37:36,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 23:37:36,527 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:37:36,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:37:36,528 INFO L85 PathProgramCache]: Analyzing trace with hash -559129508, now seen corresponding path program 2 times [2022-07-22 23:37:36,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:37:36,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487061724] [2022-07-22 23:37:36,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:37:36,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:37:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:48,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:37:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:37:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:37:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:48,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:37:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-07-22 23:37:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:48,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-07-22 23:37:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:37:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:37:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-07-22 23:37:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-07-22 23:37:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-07-22 23:37:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-07-22 23:37:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 36114 backedges. 2 proven. 36100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 23:37:49,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:37:49,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487061724] [2022-07-22 23:37:49,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487061724] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:37:49,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110011986] [2022-07-22 23:37:49,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:37:49,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:37:49,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:37:49,092 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:37:49,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 23:37:50,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:37:50,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:37:50,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 6945 conjuncts, 192 conjunts are in the unsatisfiable core [2022-07-22 23:37:50,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:37:51,474 INFO L134 CoverageAnalysis]: Checked inductivity of 36114 backedges. 6 proven. 36100 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 23:37:51,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:38:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 36114 backedges. 2 proven. 36100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 23:38:00,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110011986] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:38:00,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:38:00,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 193, 193] total 260 [2022-07-22 23:38:00,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939146164] [2022-07-22 23:38:00,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:38:00,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 260 states [2022-07-22 23:38:00,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:00,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2022-07-22 23:38:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32903, Invalid=34437, Unknown=0, NotChecked=0, Total=67340 [2022-07-22 23:38:00,124 INFO L87 Difference]: Start difference. First operand 4568 states and 6242 transitions. Second operand has 260 states, 260 states have (on average 2.3192307692307694) internal successors, (603), 257 states have internal predecessors, (603), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:38:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:38:11,917 INFO L93 Difference]: Finished difference Result 9854 states and 13884 transitions. [2022-07-22 23:38:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2022-07-22 23:38:11,918 INFO L78 Accepts]: Start accepts. Automaton has has 260 states, 260 states have (on average 2.3192307692307694) internal successors, (603), 257 states have internal predecessors, (603), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 486 [2022-07-22 23:38:11,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:38:11,943 INFO L225 Difference]: With dead ends: 9854 [2022-07-22 23:38:11,943 INFO L226 Difference]: Without dead ends: 5684 [2022-07-22 23:38:11,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1190 GetRequests, 930 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=32913, Invalid=35469, Unknown=0, NotChecked=0, Total=68382 [2022-07-22 23:38:11,957 INFO L413 NwaCegarLoop]: 2278 mSDtfsCounter, 3506 mSDsluCounter, 6862 mSDsCounter, 0 mSdLazyCounter, 13684 mSolverCounterSat, 2408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3735 SdHoareTripleChecker+Valid, 9140 SdHoareTripleChecker+Invalid, 16092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2408 IncrementalHoareTripleChecker+Valid, 13684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:38:11,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3735 Valid, 9140 Invalid, 16092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2408 Valid, 13684 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-07-22 23:38:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5684 states. [2022-07-22 23:38:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5684 to 4696. [2022-07-22 23:38:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4696 states, 3470 states have (on average 1.2590778097982709) internal successors, (4369), 3521 states have internal predecessors, (4369), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-22 23:38:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4696 states to 4696 states and 6370 transitions. [2022-07-22 23:38:12,229 INFO L78 Accepts]: Start accepts. Automaton has 4696 states and 6370 transitions. Word has length 486 [2022-07-22 23:38:12,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:38:12,229 INFO L495 AbstractCegarLoop]: Abstraction has 4696 states and 6370 transitions. [2022-07-22 23:38:12,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 260 states, 260 states have (on average 2.3192307692307694) internal successors, (603), 257 states have internal predecessors, (603), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:38:12,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4696 states and 6370 transitions. [2022-07-22 23:38:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2022-07-22 23:38:12,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:38:12,239 INFO L195 NwaCegarLoop]: trace histogram [254, 254, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:38:12,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 23:38:12,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 23:38:12,456 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:38:12,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:38:12,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1423060132, now seen corresponding path program 3 times [2022-07-22 23:38:12,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:38:12,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290349477] [2022-07-22 23:38:12,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:12,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:38:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:38:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:38:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:38:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-07-22 23:38:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-07-22 23:38:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-07-22 23:38:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-07-22 23:38:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-07-22 23:38:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-07-22 23:38:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 64530 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64528 trivial. 0 not checked. [2022-07-22 23:38:13,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:13,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290349477] [2022-07-22 23:38:13,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290349477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:38:13,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:38:13,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:38:13,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585618816] [2022-07-22 23:38:13,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:38:13,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:38:13,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:13,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:38:13,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:38:13,502 INFO L87 Difference]: Start difference. First operand 4696 states and 6370 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:38:15,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:38:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:38:23,222 INFO L93 Difference]: Finished difference Result 10379 states and 14343 transitions. [2022-07-22 23:38:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 23:38:23,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 614 [2022-07-22 23:38:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:38:23,240 INFO L225 Difference]: With dead ends: 10379 [2022-07-22 23:38:23,240 INFO L226 Difference]: Without dead ends: 5698 [2022-07-22 23:38:23,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:38:23,254 INFO L413 NwaCegarLoop]: 2281 mSDtfsCounter, 2274 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 6497 mSolverCounterSat, 1550 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2508 SdHoareTripleChecker+Valid, 5738 SdHoareTripleChecker+Invalid, 8048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1550 IncrementalHoareTripleChecker+Valid, 6497 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:38:23,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2508 Valid, 5738 Invalid, 8048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1550 Valid, 6497 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-07-22 23:38:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5698 states. [2022-07-22 23:38:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5698 to 4708. [2022-07-22 23:38:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4708 states, 3479 states have (on average 1.2584075883874677) internal successors, (4378), 3530 states have internal predecessors, (4378), 965 states have call successors, (965), 241 states have call predecessors, (965), 263 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-22 23:38:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4708 states to 4708 states and 6379 transitions. [2022-07-22 23:38:23,519 INFO L78 Accepts]: Start accepts. Automaton has 4708 states and 6379 transitions. Word has length 614 [2022-07-22 23:38:23,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:38:23,519 INFO L495 AbstractCegarLoop]: Abstraction has 4708 states and 6379 transitions. [2022-07-22 23:38:23,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:38:23,520 INFO L276 IsEmpty]: Start isEmpty. Operand 4708 states and 6379 transitions. [2022-07-22 23:38:23,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2022-07-22 23:38:23,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:38:23,525 INFO L195 NwaCegarLoop]: trace histogram [254, 254, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:38:23,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 23:38:23,525 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:38:23,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:38:23,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1616320478, now seen corresponding path program 1 times [2022-07-22 23:38:23,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:38:23,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120832211] [2022-07-22 23:38:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:23,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:38:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:38:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:38:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:38:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-07-22 23:38:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-07-22 23:38:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-07-22 23:38:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-07-22 23:38:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-07-22 23:38:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-07-22 23:38:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 64530 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 64526 trivial. 0 not checked. [2022-07-22 23:38:24,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:24,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120832211] [2022-07-22 23:38:24,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120832211] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:38:24,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466937970] [2022-07-22 23:38:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:24,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:38:24,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:38:24,674 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:38:24,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 23:38:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:28,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 7906 conjuncts, 81 conjunts are in the unsatisfiable core [2022-07-22 23:38:28,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:38:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 64530 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 64524 trivial. 0 not checked. [2022-07-22 23:38:28,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:38:28,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466937970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:38:28,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:38:28,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 11 [2022-07-22 23:38:28,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699680725] [2022-07-22 23:38:28,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:38:28,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:38:28,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:28,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:38:28,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:38:28,552 INFO L87 Difference]: Start difference. First operand 4708 states and 6379 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 23:38:30,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:38:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:38:30,884 INFO L93 Difference]: Finished difference Result 9405 states and 12761 transitions. [2022-07-22 23:38:30,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:38:30,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 614 [2022-07-22 23:38:30,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:38:30,896 INFO L225 Difference]: With dead ends: 9405 [2022-07-22 23:38:30,896 INFO L226 Difference]: Without dead ends: 4716 [2022-07-22 23:38:30,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 635 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:38:30,908 INFO L413 NwaCegarLoop]: 2527 mSDtfsCounter, 38 mSDsluCounter, 15130 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 17657 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:38:30,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 17657 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 23:38:30,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4716 states. [2022-07-22 23:38:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4716 to 4708. [2022-07-22 23:38:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4708 states, 3479 states have (on average 1.258120149468238) internal successors, (4377), 3530 states have internal predecessors, (4377), 965 states have call successors, (965), 241 states have call predecessors, (965), 263 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-22 23:38:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4708 states to 4708 states and 6378 transitions. [2022-07-22 23:38:31,069 INFO L78 Accepts]: Start accepts. Automaton has 4708 states and 6378 transitions. Word has length 614 [2022-07-22 23:38:31,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:38:31,070 INFO L495 AbstractCegarLoop]: Abstraction has 4708 states and 6378 transitions. [2022-07-22 23:38:31,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 23:38:31,070 INFO L276 IsEmpty]: Start isEmpty. Operand 4708 states and 6378 transitions. [2022-07-22 23:38:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2022-07-22 23:38:31,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:38:31,076 INFO L195 NwaCegarLoop]: trace histogram [254, 254, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:38:31,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 23:38:31,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:38:31,291 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:38:31,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:38:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1326852423, now seen corresponding path program 1 times [2022-07-22 23:38:31,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:38:31,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900112872] [2022-07-22 23:38:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:31,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:38:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:38:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:38:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:38:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-07-22 23:38:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-07-22 23:38:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2022-07-22 23:38:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-07-22 23:38:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2022-07-22 23:38:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2022-07-22 23:38:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 64530 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64526 trivial. 0 not checked. [2022-07-22 23:38:32,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:32,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900112872] [2022-07-22 23:38:32,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900112872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:38:32,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:38:32,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 23:38:32,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840260881] [2022-07-22 23:38:32,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:38:32,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 23:38:32,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:32,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 23:38:32,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:38:32,268 INFO L87 Difference]: Start difference. First operand 4708 states and 6378 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:38:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:38:46,774 INFO L93 Difference]: Finished difference Result 9857 states and 13816 transitions. [2022-07-22 23:38:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 23:38:46,776 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) Word has length 617 [2022-07-22 23:38:46,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:38:46,789 INFO L225 Difference]: With dead ends: 9857 [2022-07-22 23:38:46,789 INFO L226 Difference]: Without dead ends: 5696 [2022-07-22 23:38:46,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-22 23:38:46,797 INFO L413 NwaCegarLoop]: 2275 mSDtfsCounter, 2231 mSDsluCounter, 8926 mSDsCounter, 0 mSdLazyCounter, 17263 mSolverCounterSat, 1556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 11201 SdHoareTripleChecker+Invalid, 18819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1556 IncrementalHoareTripleChecker+Valid, 17263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:38:46,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 11201 Invalid, 18819 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1556 Valid, 17263 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2022-07-22 23:38:46,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2022-07-22 23:38:46,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 4717. [2022-07-22 23:38:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4717 states, 3485 states have (on average 1.2576757532281204) internal successors, (4383), 3537 states have internal predecessors, (4383), 965 states have call successors, (965), 241 states have call predecessors, (965), 266 states have return successors, (1057), 955 states have call predecessors, (1057), 944 states have call successors, (1057) [2022-07-22 23:38:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 6405 transitions. [2022-07-22 23:38:46,954 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 6405 transitions. Word has length 617 [2022-07-22 23:38:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:38:46,955 INFO L495 AbstractCegarLoop]: Abstraction has 4717 states and 6405 transitions. [2022-07-22 23:38:46,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 23:38:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 6405 transitions. [2022-07-22 23:38:46,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-07-22 23:38:46,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:38:46,960 INFO L195 NwaCegarLoop]: trace histogram [254, 254, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:38:46,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 23:38:46,961 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:38:46,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:38:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1103297260, now seen corresponding path program 1 times [2022-07-22 23:38:46,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:38:46,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57284109] [2022-07-22 23:38:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:46,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:38:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:38:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:38:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:38:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-07-22 23:38:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-07-22 23:38:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-07-22 23:38:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-07-22 23:38:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-07-22 23:38:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-07-22 23:38:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 64533 backedges. 2 proven. 260 refuted. 0 times theorem prover too weak. 64271 trivial. 0 not checked. [2022-07-22 23:38:53,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:53,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57284109] [2022-07-22 23:38:53,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57284109] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:38:53,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254610124] [2022-07-22 23:38:53,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:53,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:38:53,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:38:53,868 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:38:53,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process