./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 00:36:00,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 00:36:00,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 00:36:00,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 00:36:01,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 00:36:01,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 00:36:01,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 00:36:01,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 00:36:01,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 00:36:01,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 00:36:01,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 00:36:01,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 00:36:01,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 00:36:01,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 00:36:01,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 00:36:01,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 00:36:01,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 00:36:01,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 00:36:01,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 00:36:01,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 00:36:01,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 00:36:01,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 00:36:01,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 00:36:01,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 00:36:01,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 00:36:01,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 00:36:01,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 00:36:01,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 00:36:01,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 00:36:01,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 00:36:01,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 00:36:01,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 00:36:01,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 00:36:01,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 00:36:01,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 00:36:01,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 00:36:01,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 00:36:01,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 00:36:01,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 00:36:01,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 00:36:01,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 00:36:01,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 00:36:01,066 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 00:36:01,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 00:36:01,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 00:36:01,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 00:36:01,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 00:36:01,068 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 00:36:01,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 00:36:01,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 00:36:01,068 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 00:36:01,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 00:36:01,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 00:36:01,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 00:36:01,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 00:36:01,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 00:36:01,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 00:36:01,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 00:36:01,070 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 00:36:01,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 00:36:01,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 00:36:01,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 00:36:01,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 00:36:01,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:36:01,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 00:36:01,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 00:36:01,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 00:36:01,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 00:36:01,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 00:36:01,072 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 00:36:01,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 00:36:01,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 00:36:01,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 00:36:01,073 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2021-11-17 00:36:01,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 00:36:01,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 00:36:01,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 00:36:01,280 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 00:36:01,280 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 00:36:01,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-17 00:36:01,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c7a7bdb9/b22d45421f2e460c919f2f18fe1994bb/FLAG426dd4404 [2021-11-17 00:36:01,948 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 00:36:01,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-17 00:36:01,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c7a7bdb9/b22d45421f2e460c919f2f18fe1994bb/FLAG426dd4404 [2021-11-17 00:36:02,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c7a7bdb9/b22d45421f2e460c919f2f18fe1994bb [2021-11-17 00:36:02,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 00:36:02,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 00:36:02,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 00:36:02,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 00:36:02,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 00:36:02,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:36:02" (1/1) ... [2021-11-17 00:36:02,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1c33d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:02, skipping insertion in model container [2021-11-17 00:36:02,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:36:02" (1/1) ... [2021-11-17 00:36:02,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 00:36:02,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 00:36:02,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-11-17 00:36:03,185 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:36:03,226 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 00:36:03,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-11-17 00:36:03,451 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:36:03,554 INFO L208 MainTranslator]: Completed translation [2021-11-17 00:36:03,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:03 WrapperNode [2021-11-17 00:36:03,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 00:36:03,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 00:36:03,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 00:36:03,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 00:36:03,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:03" (1/1) ... [2021-11-17 00:36:03,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:03" (1/1) ... [2021-11-17 00:36:03,760 INFO L137 Inliner]: procedures = 245, calls = 3306, calls flagged for inlining = 118, calls inlined = 118, statements flattened = 6403 [2021-11-17 00:36:03,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 00:36:03,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 00:36:03,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 00:36:03,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 00:36:03,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:03" (1/1) ... [2021-11-17 00:36:03,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:03" (1/1) ... [2021-11-17 00:36:03,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:03" (1/1) ... [2021-11-17 00:36:03,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:03" (1/1) ... [2021-11-17 00:36:03,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:03" (1/1) ... [2021-11-17 00:36:03,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:03" (1/1) ... [2021-11-17 00:36:04,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:03" (1/1) ... [2021-11-17 00:36:04,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 00:36:04,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 00:36:04,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 00:36:04,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 00:36:04,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:03" (1/1) ... [2021-11-17 00:36:04,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:36:04,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:36:04,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-17 00:36:04,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-17 00:36:04,137 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2021-11-17 00:36:04,137 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2021-11-17 00:36:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2021-11-17 00:36:04,138 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2021-11-17 00:36:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_18 [2021-11-17 00:36:04,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_18 [2021-11-17 00:36:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 00:36:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 00:36:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 00:36:04,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 00:36:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_destruct [2021-11-17 00:36:04,139 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_destruct [2021-11-17 00:36:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-11-17 00:36:04,139 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-11-17 00:36:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-17 00:36:04,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-17 00:36:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_22 [2021-11-17 00:36:04,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_22 [2021-11-17 00:36:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2021-11-17 00:36:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2021-11-17 00:36:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 00:36:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 00:36:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-17 00:36:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-17 00:36:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-11-17 00:36:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-11-17 00:36:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2021-11-17 00:36:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2021-11-17 00:36:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 00:36:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 00:36:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 00:36:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 00:36:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-11-17 00:36:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-11-17 00:36:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-11-17 00:36:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-11-17 00:36:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 00:36:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 00:36:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 00:36:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 00:36:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-11-17 00:36:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-11-17 00:36:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 00:36:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 00:36:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2021-11-17 00:36:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2021-11-17 00:36:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2021-11-17 00:36:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2021-11-17 00:36:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2021-11-17 00:36:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2021-11-17 00:36:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 00:36:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-17 00:36:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2021-11-17 00:36:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2021-11-17 00:36:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-11-17 00:36:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-11-17 00:36:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 00:36:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2021-11-17 00:36:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2021-11-17 00:36:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2021-11-17 00:36:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2021-11-17 00:36:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-17 00:36:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-17 00:36:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-17 00:36:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2021-11-17 00:36:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2021-11-17 00:36:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 00:36:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 00:36:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-17 00:36:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-17 00:36:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-11-17 00:36:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-11-17 00:36:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-17 00:36:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-17 00:36:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-17 00:36:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-17 00:36:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-17 00:36:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-17 00:36:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2021-11-17 00:36:04,147 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2021-11-17 00:36:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_shutdown [2021-11-17 00:36:04,147 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_shutdown [2021-11-17 00:36:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2021-11-17 00:36:04,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2021-11-17 00:36:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2021-11-17 00:36:04,147 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2021-11-17 00:36:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 00:36:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-17 00:36:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-17 00:36:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-17 00:36:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-17 00:36:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2021-11-17 00:36:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2021-11-17 00:36:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-17 00:36:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-17 00:36:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 00:36:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-11-17 00:36:04,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-11-17 00:36:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2021-11-17 00:36:04,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2021-11-17 00:36:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2021-11-17 00:36:04,149 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2021-11-17 00:36:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 00:36:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2021-11-17 00:36:04,150 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2021-11-17 00:36:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-11-17 00:36:04,150 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-11-17 00:36:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 00:36:04,150 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 00:36:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-17 00:36:04,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-17 00:36:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2021-11-17 00:36:04,150 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2021-11-17 00:36:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2021-11-17 00:36:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2021-11-17 00:36:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-17 00:36:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-17 00:36:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-17 00:36:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-17 00:36:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2021-11-17 00:36:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2021-11-17 00:36:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2021-11-17 00:36:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2021-11-17 00:36:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 00:36:04,166 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 00:36:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 00:36:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2021-11-17 00:36:04,166 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2021-11-17 00:36:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2021-11-17 00:36:04,166 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2021-11-17 00:36:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2021-11-17 00:36:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2021-11-17 00:36:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-17 00:36:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-17 00:36:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 00:36:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 00:36:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2021-11-17 00:36:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2021-11-17 00:36:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2021-11-17 00:36:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2021-11-17 00:36:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 00:36:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2021-11-17 00:36:04,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2021-11-17 00:36:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 00:36:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-17 00:36:04,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-17 00:36:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 00:36:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_17 [2021-11-17 00:36:04,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_17 [2021-11-17 00:36:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 00:36:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 00:36:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-17 00:36:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-17 00:36:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-11-17 00:36:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-11-17 00:36:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2021-11-17 00:36:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2021-11-17 00:36:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_irq [2021-11-17 00:36:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_irq [2021-11-17 00:36:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2021-11-17 00:36:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2021-11-17 00:36:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2021-11-17 00:36:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2021-11-17 00:36:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2021-11-17 00:36:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2021-11-17 00:36:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-17 00:36:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-17 00:36:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-11-17 00:36:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-11-17 00:36:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 00:36:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-11-17 00:36:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-11-17 00:36:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-11-17 00:36:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-11-17 00:36:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2021-11-17 00:36:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2021-11-17 00:36:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 00:36:04,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 00:36:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-11-17 00:36:04,172 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-11-17 00:36:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_bulk_callback [2021-11-17 00:36:04,172 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_bulk_callback [2021-11-17 00:36:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-17 00:36:04,172 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-17 00:36:04,727 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 00:36:04,730 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 00:36:04,918 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 00:36:05,281 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-11-17 00:36:10,962 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 00:36:10,981 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 00:36:10,981 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 00:36:10,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:36:10 BoogieIcfgContainer [2021-11-17 00:36:10,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 00:36:10,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 00:36:10,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 00:36:10,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 00:36:10,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:36:02" (1/3) ... [2021-11-17 00:36:10,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfc0b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:36:10, skipping insertion in model container [2021-11-17 00:36:10,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:36:03" (2/3) ... [2021-11-17 00:36:10,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfc0b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:36:10, skipping insertion in model container [2021-11-17 00:36:10,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:36:10" (3/3) ... [2021-11-17 00:36:10,992 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-17 00:36:10,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 00:36:10,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 00:36:11,045 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 00:36:11,052 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 00:36:11,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 00:36:11,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 1493 states, 1064 states have (on average 1.3449248120300752) internal successors, (1431), 1100 states have internal predecessors, (1431), 346 states have call successors, (346), 83 states have call predecessors, (346), 81 states have return successors, (335), 327 states have call predecessors, (335), 335 states have call successors, (335) [2021-11-17 00:36:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-17 00:36:11,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:36:11,146 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:36:11,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:36:11,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:36:11,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1074681228, now seen corresponding path program 1 times [2021-11-17 00:36:11,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:36:11,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814806871] [2021-11-17 00:36:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:36:11,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:36:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:36:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:36:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:36:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:36:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:36:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:36:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:36:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:36:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:36:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:36:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:36:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:36:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:36:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:36:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:36:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 00:36:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 00:36:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-11-17 00:36:11,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:36:11,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814806871] [2021-11-17 00:36:11,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814806871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:36:11,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:36:11,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 00:36:11,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811057324] [2021-11-17 00:36:11,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:36:11,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:36:11,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:36:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:36:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:36:11,909 INFO L87 Difference]: Start difference. First operand has 1493 states, 1064 states have (on average 1.3449248120300752) internal successors, (1431), 1100 states have internal predecessors, (1431), 346 states have call successors, (346), 83 states have call predecessors, (346), 81 states have return successors, (335), 327 states have call predecessors, (335), 335 states have call successors, (335) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:36:13,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:16,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:18,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:21,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:23,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:28,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:36:31,270 INFO L93 Difference]: Finished difference Result 4571 states and 6678 transitions. [2021-11-17 00:36:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:36:31,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 117 [2021-11-17 00:36:31,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:36:31,306 INFO L225 Difference]: With dead ends: 4571 [2021-11-17 00:36:31,306 INFO L226 Difference]: Without dead ends: 3049 [2021-11-17 00:36:31,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:36:31,320 INFO L933 BasicCegarLoop]: 2273 mSDtfsCounter, 2992 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 1669 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3245 SdHoareTripleChecker+Valid, 6032 SdHoareTripleChecker+Invalid, 3751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1669 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-11-17 00:36:31,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3245 Valid, 6032 Invalid, 3751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1669 Valid, 2076 Invalid, 6 Unknown, 0 Unchecked, 18.9s Time] [2021-11-17 00:36:31,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2021-11-17 00:36:31,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2862. [2021-11-17 00:36:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2063 states have (on average 1.3364032961706254) internal successors, (2757), 2104 states have internal predecessors, (2757), 638 states have call successors, (638), 161 states have call predecessors, (638), 160 states have return successors, (632), 616 states have call predecessors, (632), 632 states have call successors, (632) [2021-11-17 00:36:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 4027 transitions. [2021-11-17 00:36:31,529 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 4027 transitions. Word has length 117 [2021-11-17 00:36:31,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:36:31,531 INFO L470 AbstractCegarLoop]: Abstraction has 2862 states and 4027 transitions. [2021-11-17 00:36:31,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:36:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 4027 transitions. [2021-11-17 00:36:31,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-17 00:36:31,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:36:31,539 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:36:31,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 00:36:31,540 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:36:31,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:36:31,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1971538155, now seen corresponding path program 1 times [2021-11-17 00:36:31,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:36:31,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518300458] [2021-11-17 00:36:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:36:31,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:36:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:36:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:36:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:36:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:36:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:36:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:31,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:36:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:31,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:36:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:36:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:36:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:31,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:36:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:31,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:36:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:32,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:36:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:36:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:36:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:32,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:36:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:32,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:36:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:32,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:36:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:36:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-11-17 00:36:32,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:36:32,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518300458] [2021-11-17 00:36:32,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518300458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:36:32,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:36:32,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:36:32,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942012666] [2021-11-17 00:36:32,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:36:32,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:36:32,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:36:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:36:32,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:36:32,090 INFO L87 Difference]: Start difference. First operand 2862 states and 4027 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:36:34,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:35,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:36,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:40,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:42,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:49,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:50,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:36:50,926 INFO L93 Difference]: Finished difference Result 9103 states and 13201 transitions. [2021-11-17 00:36:50,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:36:50,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 129 [2021-11-17 00:36:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:36:50,957 INFO L225 Difference]: With dead ends: 9103 [2021-11-17 00:36:50,957 INFO L226 Difference]: Without dead ends: 6274 [2021-11-17 00:36:50,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:36:50,973 INFO L933 BasicCegarLoop]: 2366 mSDtfsCounter, 3126 mSDsluCounter, 5020 mSDsCounter, 0 mSdLazyCounter, 3039 mSolverCounterSat, 1778 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3379 SdHoareTripleChecker+Valid, 7386 SdHoareTripleChecker+Invalid, 4821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1778 IncrementalHoareTripleChecker+Valid, 3039 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2021-11-17 00:36:50,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3379 Valid, 7386 Invalid, 4821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1778 Valid, 3039 Invalid, 4 Unknown, 0 Unchecked, 18.4s Time] [2021-11-17 00:36:50,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6274 states. [2021-11-17 00:36:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6274 to 5787. [2021-11-17 00:36:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5787 states, 4175 states have (on average 1.3348502994011977) internal successors, (5573), 4258 states have internal predecessors, (5573), 1273 states have call successors, (1273), 321 states have call predecessors, (1273), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2021-11-17 00:36:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5787 states to 5787 states and 8233 transitions. [2021-11-17 00:36:51,291 INFO L78 Accepts]: Start accepts. Automaton has 5787 states and 8233 transitions. Word has length 129 [2021-11-17 00:36:51,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:36:51,295 INFO L470 AbstractCegarLoop]: Abstraction has 5787 states and 8233 transitions. [2021-11-17 00:36:51,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:36:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5787 states and 8233 transitions. [2021-11-17 00:36:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-17 00:36:51,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:36:51,301 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:36:51,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 00:36:51,302 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:36:51,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:36:51,302 INFO L85 PathProgramCache]: Analyzing trace with hash -988843388, now seen corresponding path program 1 times [2021-11-17 00:36:51,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:36:51,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950834207] [2021-11-17 00:36:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:36:51,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:36:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:36:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:36:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:36:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:36:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:36:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:36:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:36:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:36:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:36:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:36:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:36:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:36:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:36:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:36:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:36:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:36:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:36:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:36:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:36:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-11-17 00:36:51,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:36:51,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950834207] [2021-11-17 00:36:51,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950834207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:36:51,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:36:51,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:36:51,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166825981] [2021-11-17 00:36:51,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:36:51,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:36:51,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:36:51,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:36:51,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:36:51,642 INFO L87 Difference]: Start difference. First operand 5787 states and 8233 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:36:53,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:55,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:36:58,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:01,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:03,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:07,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:37:07,211 INFO L93 Difference]: Finished difference Result 6285 states and 9087 transitions. [2021-11-17 00:37:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:37:07,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2021-11-17 00:37:07,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:37:07,274 INFO L225 Difference]: With dead ends: 6285 [2021-11-17 00:37:07,287 INFO L226 Difference]: Without dead ends: 6282 [2021-11-17 00:37:07,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:37:07,295 INFO L933 BasicCegarLoop]: 1946 mSDtfsCounter, 2440 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 1031 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2688 SdHoareTripleChecker+Valid, 4942 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1031 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:37:07,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2688 Valid, 4942 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1031 Valid, 1682 Invalid, 5 Unknown, 0 Unchecked, 15.3s Time] [2021-11-17 00:37:07,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-11-17 00:37:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 5794. [2021-11-17 00:37:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5794 states, 4179 states have (on average 1.334290500119646) internal successors, (5576), 4261 states have internal predecessors, (5576), 1272 states have call successors, (1272), 325 states have call predecessors, (1272), 342 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2021-11-17 00:37:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 8235 transitions. [2021-11-17 00:37:07,481 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 8235 transitions. Word has length 130 [2021-11-17 00:37:07,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:37:07,482 INFO L470 AbstractCegarLoop]: Abstraction has 5794 states and 8235 transitions. [2021-11-17 00:37:07,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:37:07,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 8235 transitions. [2021-11-17 00:37:07,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-17 00:37:07,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:37:07,485 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:37:07,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 00:37:07,485 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:37:07,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:37:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash -590071816, now seen corresponding path program 1 times [2021-11-17 00:37:07,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:37:07,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875764354] [2021-11-17 00:37:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:07,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:37:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:37:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:37:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:37:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:37:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:37:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:37:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:37:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:37:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:37:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:37:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:37:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:37:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:37:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:37:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:37:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-11-17 00:37:07,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:37:07,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875764354] [2021-11-17 00:37:07,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875764354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:37:07,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:37:07,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:37:07,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607549063] [2021-11-17 00:37:07,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:37:07,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:37:07,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:37:07,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:37:07,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:37:07,875 INFO L87 Difference]: Start difference. First operand 5794 states and 8235 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:37:12,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:14,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:18,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:37:18,367 INFO L93 Difference]: Finished difference Result 6272 states and 9069 transitions. [2021-11-17 00:37:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:37:18,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2021-11-17 00:37:18,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:37:18,390 INFO L225 Difference]: With dead ends: 6272 [2021-11-17 00:37:18,391 INFO L226 Difference]: Without dead ends: 6269 [2021-11-17 00:37:18,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:37:18,393 INFO L933 BasicCegarLoop]: 1950 mSDtfsCounter, 2439 mSDsluCounter, 2983 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 1026 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 4933 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1026 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:37:18,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2683 Valid, 4933 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1026 Valid, 1690 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2021-11-17 00:37:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2021-11-17 00:37:18,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 5793. [2021-11-17 00:37:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5793 states, 4179 states have (on average 1.3340512084230678) internal successors, (5575), 4260 states have internal predecessors, (5575), 1271 states have call successors, (1271), 325 states have call predecessors, (1271), 342 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2021-11-17 00:37:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8233 transitions. [2021-11-17 00:37:18,613 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8233 transitions. Word has length 131 [2021-11-17 00:37:18,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:37:18,614 INFO L470 AbstractCegarLoop]: Abstraction has 5793 states and 8233 transitions. [2021-11-17 00:37:18,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:37:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8233 transitions. [2021-11-17 00:37:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-17 00:37:18,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:37:18,618 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:37:18,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 00:37:18,618 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:37:18,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:37:18,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1113050105, now seen corresponding path program 1 times [2021-11-17 00:37:18,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:37:18,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917227752] [2021-11-17 00:37:18,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:18,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:37:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:37:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:37:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:37:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:37:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:37:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:37:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:37:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:37:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:37:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:37:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:37:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:37:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:37:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:37:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:37:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-11-17 00:37:18,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:37:18,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917227752] [2021-11-17 00:37:18,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917227752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:37:18,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:37:18,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:37:18,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328323079] [2021-11-17 00:37:18,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:37:18,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:37:18,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:37:18,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:37:18,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:37:18,906 INFO L87 Difference]: Start difference. First operand 5793 states and 8233 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:37:20,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:23,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:26,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:28,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:32,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:34,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:36,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:37:42,214 INFO L93 Difference]: Finished difference Result 18194 states and 26513 transitions. [2021-11-17 00:37:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:37:42,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 132 [2021-11-17 00:37:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:37:42,270 INFO L225 Difference]: With dead ends: 18194 [2021-11-17 00:37:42,270 INFO L226 Difference]: Without dead ends: 12434 [2021-11-17 00:37:42,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:37:42,294 INFO L933 BasicCegarLoop]: 2462 mSDtfsCounter, 2985 mSDsluCounter, 5204 mSDsCounter, 0 mSdLazyCounter, 2998 mSolverCounterSat, 1705 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3240 SdHoareTripleChecker+Valid, 7666 SdHoareTripleChecker+Invalid, 4710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1705 IncrementalHoareTripleChecker+Valid, 2998 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2021-11-17 00:37:42,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3240 Valid, 7666 Invalid, 4710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1705 Valid, 2998 Invalid, 7 Unknown, 0 Unchecked, 22.9s Time] [2021-11-17 00:37:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12434 states. [2021-11-17 00:37:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12434 to 11568. [2021-11-17 00:37:42,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11568 states, 8357 states have (on average 1.3349288022017471) internal successors, (11156), 8527 states have internal predecessors, (11156), 2512 states have call successors, (2512), 646 states have call predecessors, (2512), 698 states have return successors, (2955), 2486 states have call predecessors, (2955), 2505 states have call successors, (2955) [2021-11-17 00:37:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11568 states to 11568 states and 16623 transitions. [2021-11-17 00:37:42,689 INFO L78 Accepts]: Start accepts. Automaton has 11568 states and 16623 transitions. Word has length 132 [2021-11-17 00:37:42,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:37:42,690 INFO L470 AbstractCegarLoop]: Abstraction has 11568 states and 16623 transitions. [2021-11-17 00:37:42,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:37:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 11568 states and 16623 transitions. [2021-11-17 00:37:42,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-17 00:37:42,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:37:42,693 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:37:42,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 00:37:42,694 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:37:42,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:37:42,694 INFO L85 PathProgramCache]: Analyzing trace with hash -145503013, now seen corresponding path program 1 times [2021-11-17 00:37:42,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:37:42,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202693079] [2021-11-17 00:37:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:42,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:37:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:37:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:37:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:37:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:37:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:37:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:37:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:37:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:37:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:37:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:37:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:37:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:43,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:37:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:43,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:37:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:37:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:43,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:37:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:43,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-11-17 00:37:43,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:37:43,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202693079] [2021-11-17 00:37:43,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202693079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:37:43,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:37:43,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:37:43,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945493298] [2021-11-17 00:37:43,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:37:43,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:37:43,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:37:43,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:37:43,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:37:43,057 INFO L87 Difference]: Start difference. First operand 11568 states and 16623 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:37:45,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:47,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:48,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:52,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:54,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:37:58,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:37:58,229 INFO L93 Difference]: Finished difference Result 12414 states and 18115 transitions. [2021-11-17 00:37:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:37:58,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2021-11-17 00:37:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:37:58,268 INFO L225 Difference]: With dead ends: 12414 [2021-11-17 00:37:58,268 INFO L226 Difference]: Without dead ends: 12393 [2021-11-17 00:37:58,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:37:58,275 INFO L933 BasicCegarLoop]: 1950 mSDtfsCounter, 2452 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 1035 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2700 SdHoareTripleChecker+Valid, 4901 SdHoareTripleChecker+Invalid, 2716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1035 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:37:58,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2700 Valid, 4901 Invalid, 2716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1035 Valid, 1678 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time] [2021-11-17 00:37:58,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12393 states. [2021-11-17 00:37:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12393 to 11549. [2021-11-17 00:37:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11549 states, 8343 states have (on average 1.3348915258300371) internal successors, (11137), 8512 states have internal predecessors, (11137), 2509 states have call successors, (2509), 644 states have call predecessors, (2509), 696 states have return successors, (2953), 2484 states have call predecessors, (2953), 2503 states have call successors, (2953) [2021-11-17 00:37:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11549 states to 11549 states and 16599 transitions. [2021-11-17 00:37:58,598 INFO L78 Accepts]: Start accepts. Automaton has 11549 states and 16599 transitions. Word has length 133 [2021-11-17 00:37:58,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:37:58,598 INFO L470 AbstractCegarLoop]: Abstraction has 11549 states and 16599 transitions. [2021-11-17 00:37:58,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:37:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 11549 states and 16599 transitions. [2021-11-17 00:37:58,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-17 00:37:58,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:37:58,604 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:37:58,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 00:37:58,604 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:37:58,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:37:58,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1006130556, now seen corresponding path program 1 times [2021-11-17 00:37:58,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:37:58,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852065193] [2021-11-17 00:37:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:37:58,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:37:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:37:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:37:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:37:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:37:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:37:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:37:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:37:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:37:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:37:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:37:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:37:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:37:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:37:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:37:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:37:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:37:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 00:37:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 00:37:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-17 00:37:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-17 00:37:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:37:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:37:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2021-11-17 00:37:58,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:37:58,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852065193] [2021-11-17 00:37:58,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852065193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:37:58,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:37:58,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 00:37:58,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516722759] [2021-11-17 00:37:58,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:37:58,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:37:58,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:37:58,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:37:58,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:37:58,997 INFO L87 Difference]: Start difference. First operand 11549 states and 16599 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 00:38:01,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:05,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:07,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:11,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:13,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:18,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:38:18,055 INFO L93 Difference]: Finished difference Result 36845 states and 53809 transitions. [2021-11-17 00:38:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 00:38:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 154 [2021-11-17 00:38:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:38:18,128 INFO L225 Difference]: With dead ends: 36845 [2021-11-17 00:38:18,129 INFO L226 Difference]: Without dead ends: 25329 [2021-11-17 00:38:18,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:38:18,158 INFO L933 BasicCegarLoop]: 2073 mSDtfsCounter, 3976 mSDsluCounter, 3904 mSDsCounter, 0 mSdLazyCounter, 4284 mSolverCounterSat, 2244 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 5977 SdHoareTripleChecker+Invalid, 6533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2244 IncrementalHoareTripleChecker+Valid, 4284 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:38:18,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4306 Valid, 5977 Invalid, 6533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2244 Valid, 4284 Invalid, 5 Unknown, 0 Unchecked, 18.2s Time] [2021-11-17 00:38:18,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25329 states. [2021-11-17 00:38:18,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25329 to 23011. [2021-11-17 00:38:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23011 states, 16621 states have (on average 1.3321701462005897) internal successors, (22142), 16996 states have internal predecessors, (22142), 4914 states have call successors, (4914), 1277 states have call predecessors, (4914), 1475 states have return successors, (6142), 4929 states have call predecessors, (6142), 4908 states have call successors, (6142) [2021-11-17 00:38:18,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23011 states to 23011 states and 33198 transitions. [2021-11-17 00:38:18,982 INFO L78 Accepts]: Start accepts. Automaton has 23011 states and 33198 transitions. Word has length 154 [2021-11-17 00:38:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:38:18,982 INFO L470 AbstractCegarLoop]: Abstraction has 23011 states and 33198 transitions. [2021-11-17 00:38:18,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 00:38:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 23011 states and 33198 transitions. [2021-11-17 00:38:18,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-17 00:38:18,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:38:18,993 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:38:18,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 00:38:18,994 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:38:18,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:38:18,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1122281095, now seen corresponding path program 1 times [2021-11-17 00:38:18,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:38:18,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082234324] [2021-11-17 00:38:18,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:38:18,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:38:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:38:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:38:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:38:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:38:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:38:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:38:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:38:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:38:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:38:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:38:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:38:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:38:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:38:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:38:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:38:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:38:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 00:38:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-17 00:38:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 00:38:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 00:38:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 00:38:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 00:38:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:38:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 00:38:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-17 00:38:19,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:38:19,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082234324] [2021-11-17 00:38:19,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082234324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:38:19,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:38:19,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 00:38:19,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241530184] [2021-11-17 00:38:19,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:38:19,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:38:19,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:38:19,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:38:19,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:38:19,296 INFO L87 Difference]: Start difference. First operand 23011 states and 33198 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 00:38:20,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:22,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:24,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:27,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:29,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:31,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:35,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:38,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:40,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:42,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:50,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:38:50,183 INFO L93 Difference]: Finished difference Result 66244 states and 95908 transitions. [2021-11-17 00:38:50,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:38:50,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 213 [2021-11-17 00:38:50,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:38:50,332 INFO L225 Difference]: With dead ends: 66244 [2021-11-17 00:38:50,333 INFO L226 Difference]: Without dead ends: 43276 [2021-11-17 00:38:50,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:38:50,394 INFO L933 BasicCegarLoop]: 2330 mSDtfsCounter, 2946 mSDsluCounter, 4857 mSDsCounter, 0 mSdLazyCounter, 4807 mSolverCounterSat, 1777 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3227 SdHoareTripleChecker+Valid, 7187 SdHoareTripleChecker+Invalid, 6593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1777 IncrementalHoareTripleChecker+Valid, 4807 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:38:50,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3227 Valid, 7187 Invalid, 6593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1777 Valid, 4807 Invalid, 9 Unknown, 0 Unchecked, 29.5s Time] [2021-11-17 00:38:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43276 states. [2021-11-17 00:38:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43276 to 40391. [2021-11-17 00:38:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40391 states, 29000 states have (on average 1.3188275862068966) internal successors, (38246), 29735 states have internal predecessors, (38246), 8654 states have call successors, (8654), 2338 states have call predecessors, (8654), 2736 states have return successors, (10996), 8685 states have call predecessors, (10996), 8648 states have call successors, (10996) [2021-11-17 00:38:51,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40391 states to 40391 states and 57896 transitions. [2021-11-17 00:38:51,958 INFO L78 Accepts]: Start accepts. Automaton has 40391 states and 57896 transitions. Word has length 213 [2021-11-17 00:38:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:38:51,958 INFO L470 AbstractCegarLoop]: Abstraction has 40391 states and 57896 transitions. [2021-11-17 00:38:51,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 00:38:51,958 INFO L276 IsEmpty]: Start isEmpty. Operand 40391 states and 57896 transitions. [2021-11-17 00:38:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-17 00:38:51,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:38:51,972 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:38:51,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 00:38:51,972 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:38:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:38:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash -306324402, now seen corresponding path program 1 times [2021-11-17 00:38:51,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:38:51,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219318350] [2021-11-17 00:38:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:38:51,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:38:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:38:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:38:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:38:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:38:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:38:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:38:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:38:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:38:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:38:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:38:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:38:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:38:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:38:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:38:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:38:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:38:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:38:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 00:38:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:38:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 00:38:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-17 00:38:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 00:38:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-17 00:38:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 00:38:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-17 00:38:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:38:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:38:52,301 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2021-11-17 00:38:52,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:38:52,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219318350] [2021-11-17 00:38:52,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219318350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:38:52,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:38:52,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:38:52,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119139132] [2021-11-17 00:38:52,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:38:52,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:38:52,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:38:52,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:38:52,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:38:52,303 INFO L87 Difference]: Start difference. First operand 40391 states and 57896 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 00:38:54,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:56,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:57,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:38:59,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:02,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:06,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:39:11,394 INFO L93 Difference]: Finished difference Result 85505 states and 124239 transitions. [2021-11-17 00:39:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:39:11,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 206 [2021-11-17 00:39:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:39:11,574 INFO L225 Difference]: With dead ends: 85505 [2021-11-17 00:39:11,574 INFO L226 Difference]: Without dead ends: 45149 [2021-11-17 00:39:11,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:39:11,675 INFO L933 BasicCegarLoop]: 1897 mSDtfsCounter, 2074 mSDsluCounter, 5428 mSDsCounter, 0 mSdLazyCounter, 3377 mSolverCounterSat, 2152 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 7325 SdHoareTripleChecker+Invalid, 5534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2152 IncrementalHoareTripleChecker+Valid, 3377 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:39:11,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2177 Valid, 7325 Invalid, 5534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2152 Valid, 3377 Invalid, 5 Unknown, 0 Unchecked, 17.6s Time] [2021-11-17 00:39:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45149 states. [2021-11-17 00:39:12,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45149 to 40400. [2021-11-17 00:39:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40400 states, 29009 states have (on average 1.3185907821710503) internal successors, (38251), 29744 states have internal predecessors, (38251), 8654 states have call successors, (8654), 2338 states have call predecessors, (8654), 2736 states have return successors, (10996), 8685 states have call predecessors, (10996), 8648 states have call successors, (10996) [2021-11-17 00:39:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40400 states to 40400 states and 57901 transitions. [2021-11-17 00:39:13,110 INFO L78 Accepts]: Start accepts. Automaton has 40400 states and 57901 transitions. Word has length 206 [2021-11-17 00:39:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:39:13,113 INFO L470 AbstractCegarLoop]: Abstraction has 40400 states and 57901 transitions. [2021-11-17 00:39:13,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 00:39:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 40400 states and 57901 transitions. [2021-11-17 00:39:13,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-17 00:39:13,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:39:13,125 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:39:13,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 00:39:13,126 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:39:13,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:39:13,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1492256636, now seen corresponding path program 1 times [2021-11-17 00:39:13,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:39:13,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498381153] [2021-11-17 00:39:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:39:13,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:39:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:39:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:39:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:39:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:39:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:39:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:39:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:39:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:39:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:39:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:39:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:39:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:39:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:39:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:39:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:39:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:39:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 00:39:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-17 00:39:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 00:39:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-17 00:39:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-17 00:39:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-17 00:39:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-17 00:39:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-17 00:39:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:39:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-17 00:39:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-17 00:39:13,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:39:13,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498381153] [2021-11-17 00:39:13,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498381153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:39:13,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:39:13,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 00:39:13,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508443527] [2021-11-17 00:39:13,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:39:13,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:39:13,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:39:13,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:39:13,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:39:13,633 INFO L87 Difference]: Start difference. First operand 40400 states and 57901 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 00:39:15,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:16,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:19,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:27,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:39:27,862 INFO L93 Difference]: Finished difference Result 106542 states and 152793 transitions. [2021-11-17 00:39:27,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:39:27,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 215 [2021-11-17 00:39:27,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:39:28,067 INFO L225 Difference]: With dead ends: 106542 [2021-11-17 00:39:28,067 INFO L226 Difference]: Without dead ends: 66189 [2021-11-17 00:39:28,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:39:28,260 INFO L933 BasicCegarLoop]: 2110 mSDtfsCounter, 3475 mSDsluCounter, 3852 mSDsCounter, 0 mSdLazyCounter, 3331 mSolverCounterSat, 2446 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3681 SdHoareTripleChecker+Valid, 5962 SdHoareTripleChecker+Invalid, 5779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2446 IncrementalHoareTripleChecker+Valid, 3331 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:39:28,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3681 Valid, 5962 Invalid, 5779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2446 Valid, 3331 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2021-11-17 00:39:28,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66189 states. [2021-11-17 00:39:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66189 to 61472. [2021-11-17 00:39:30,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61472 states, 44309 states have (on average 1.3165271163871899) internal successors, (58334), 45428 states have internal predecessors, (58334), 12711 states have call successors, (12711), 3809 states have call predecessors, (12711), 4451 states have return successors, (16205), 12722 states have call predecessors, (16205), 12705 states have call successors, (16205) [2021-11-17 00:39:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61472 states to 61472 states and 87250 transitions. [2021-11-17 00:39:30,522 INFO L78 Accepts]: Start accepts. Automaton has 61472 states and 87250 transitions. Word has length 215 [2021-11-17 00:39:30,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:39:30,523 INFO L470 AbstractCegarLoop]: Abstraction has 61472 states and 87250 transitions. [2021-11-17 00:39:30,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 00:39:30,523 INFO L276 IsEmpty]: Start isEmpty. Operand 61472 states and 87250 transitions. [2021-11-17 00:39:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-17 00:39:30,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:39:30,539 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:39:30,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-17 00:39:30,539 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:39:30,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:39:30,540 INFO L85 PathProgramCache]: Analyzing trace with hash 443279156, now seen corresponding path program 1 times [2021-11-17 00:39:30,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:39:30,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548930331] [2021-11-17 00:39:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:39:30,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:39:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:39:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:39:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:39:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:39:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:39:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:39:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:39:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:39:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:39:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:39:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:39:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:39:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:39:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:39:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:39:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:39:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:39:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 00:39:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 00:39:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-17 00:39:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 00:39:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 00:39:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 00:39:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-17 00:39:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-17 00:39:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-17 00:39:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:39:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:39:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-17 00:39:30,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:39:30,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548930331] [2021-11-17 00:39:30,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548930331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:39:30,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:39:30,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-17 00:39:30,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479797114] [2021-11-17 00:39:30,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:39:30,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-17 00:39:30,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:39:30,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-17 00:39:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:39:30,929 INFO L87 Difference]: Start difference. First operand 61472 states and 87250 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 00:39:32,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:35,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:36,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:37,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:40,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:42,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:54,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:56,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:39:59,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:01,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:07,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:40:07,133 INFO L93 Difference]: Finished difference Result 146921 states and 220011 transitions. [2021-11-17 00:40:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-17 00:40:07,134 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 214 [2021-11-17 00:40:07,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:40:07,718 INFO L225 Difference]: With dead ends: 146921 [2021-11-17 00:40:07,718 INFO L226 Difference]: Without dead ends: 107079 [2021-11-17 00:40:07,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-11-17 00:40:07,811 INFO L933 BasicCegarLoop]: 3807 mSDtfsCounter, 2849 mSDsluCounter, 22443 mSDsCounter, 0 mSdLazyCounter, 7907 mSolverCounterSat, 1763 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3139 SdHoareTripleChecker+Valid, 26250 SdHoareTripleChecker+Invalid, 9678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1763 IncrementalHoareTripleChecker+Valid, 7907 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:40:07,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3139 Valid, 26250 Invalid, 9678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1763 Valid, 7907 Invalid, 8 Unknown, 0 Unchecked, 33.0s Time] [2021-11-17 00:40:07,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107079 states. [2021-11-17 00:40:10,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107079 to 59577. [2021-11-17 00:40:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59577 states, 43002 states have (on average 1.3174968606111344) internal successors, (56655), 44039 states have internal predecessors, (56655), 12308 states have call successors, (12308), 3676 states have call predecessors, (12308), 4266 states have return successors, (15520), 12337 states have call predecessors, (15520), 12304 states have call successors, (15520) [2021-11-17 00:40:10,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59577 states to 59577 states and 84483 transitions. [2021-11-17 00:40:10,866 INFO L78 Accepts]: Start accepts. Automaton has 59577 states and 84483 transitions. Word has length 214 [2021-11-17 00:40:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:40:10,867 INFO L470 AbstractCegarLoop]: Abstraction has 59577 states and 84483 transitions. [2021-11-17 00:40:10,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 00:40:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 59577 states and 84483 transitions. [2021-11-17 00:40:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-17 00:40:10,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:40:10,915 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:40:10,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-17 00:40:10,916 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:40:10,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:40:10,916 INFO L85 PathProgramCache]: Analyzing trace with hash 168519542, now seen corresponding path program 1 times [2021-11-17 00:40:10,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:40:10,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384202170] [2021-11-17 00:40:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:40:10,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:40:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:40:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:40:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:40:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:40:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:40:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:40:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:40:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:40:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:40:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:40:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:40:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:40:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:40:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:40:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:40:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:40:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:40:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 00:40:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 00:40:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-17 00:40:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 00:40:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 00:40:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 00:40:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-17 00:40:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-17 00:40:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-17 00:40:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:40:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:40:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-17 00:40:11,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:40:11,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384202170] [2021-11-17 00:40:11,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384202170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:40:11,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:40:11,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 00:40:11,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189620313] [2021-11-17 00:40:11,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:40:11,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:40:11,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:40:11,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:40:11,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:40:11,289 INFO L87 Difference]: Start difference. First operand 59577 states and 84483 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 6 states have internal predecessors, (98), 5 states have call successors, (31), 8 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-17 00:40:13,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:15,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:17,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:19,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:21,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:24,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:26,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:34,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:36,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:41,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:40:56,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:40:56,214 INFO L93 Difference]: Finished difference Result 100900 states and 146718 transitions. [2021-11-17 00:40:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-17 00:40:56,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 6 states have internal predecessors, (98), 5 states have call successors, (31), 8 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 214 [2021-11-17 00:40:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:40:56,627 INFO L225 Difference]: With dead ends: 100900 [2021-11-17 00:40:56,627 INFO L226 Difference]: Without dead ends: 100897 [2021-11-17 00:40:56,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2021-11-17 00:40:56,683 INFO L933 BasicCegarLoop]: 3478 mSDtfsCounter, 6186 mSDsluCounter, 9794 mSDsCounter, 0 mSdLazyCounter, 13224 mSolverCounterSat, 2894 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6634 SdHoareTripleChecker+Valid, 13272 SdHoareTripleChecker+Invalid, 16127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2894 IncrementalHoareTripleChecker+Valid, 13224 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.9s IncrementalHoareTripleChecker+Time [2021-11-17 00:40:56,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6634 Valid, 13272 Invalid, 16127 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2894 Valid, 13224 Invalid, 9 Unknown, 0 Unchecked, 41.9s Time] [2021-11-17 00:40:56,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100897 states. [2021-11-17 00:40:59,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100897 to 89535. [2021-11-17 00:40:59,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89535 states, 64642 states have (on average 1.3181677547105597) internal successors, (85209), 66203 states have internal predecessors, (85209), 18542 states have call successors, (18542), 5588 states have call predecessors, (18542), 6350 states have return successors, (23470), 18443 states have call predecessors, (23470), 18538 states have call successors, (23470) [2021-11-17 00:41:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89535 states to 89535 states and 127221 transitions. [2021-11-17 00:41:00,301 INFO L78 Accepts]: Start accepts. Automaton has 89535 states and 127221 transitions. Word has length 214 [2021-11-17 00:41:00,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:41:00,302 INFO L470 AbstractCegarLoop]: Abstraction has 89535 states and 127221 transitions. [2021-11-17 00:41:00,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 6 states have internal predecessors, (98), 5 states have call successors, (31), 8 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-17 00:41:00,302 INFO L276 IsEmpty]: Start isEmpty. Operand 89535 states and 127221 transitions. [2021-11-17 00:41:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-17 00:41:00,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:41:00,328 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:41:00,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-17 00:41:00,328 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:41:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:41:00,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1312814565, now seen corresponding path program 1 times [2021-11-17 00:41:00,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:41:00,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752375375] [2021-11-17 00:41:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:41:00,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:41:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:41:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:41:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:41:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:41:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:41:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:41:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:41:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:41:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:41:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:41:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:41:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:41:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:41:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:41:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:41:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:41:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:41:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 00:41:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 00:41:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-17 00:41:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 00:41:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-17 00:41:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 00:41:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 00:41:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-11-17 00:41:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:41:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-11-17 00:41:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-11-17 00:41:00,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:41:00,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752375375] [2021-11-17 00:41:00,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752375375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:41:00,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:41:00,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 00:41:00,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432403074] [2021-11-17 00:41:00,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:41:00,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 00:41:00,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:41:00,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 00:41:00,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:41:00,873 INFO L87 Difference]: Start difference. First operand 89535 states and 127221 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-17 00:41:03,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:41:05,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:41:07,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:41:09,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:41:22,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:41:22,269 INFO L93 Difference]: Finished difference Result 234617 states and 336557 transitions. [2021-11-17 00:41:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 00:41:22,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 222 [2021-11-17 00:41:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:41:22,814 INFO L225 Difference]: With dead ends: 234617 [2021-11-17 00:41:22,814 INFO L226 Difference]: Without dead ends: 145141 [2021-11-17 00:41:23,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-17 00:41:23,157 INFO L933 BasicCegarLoop]: 2821 mSDtfsCounter, 4107 mSDsluCounter, 5294 mSDsCounter, 0 mSdLazyCounter, 3846 mSolverCounterSat, 2646 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4397 SdHoareTripleChecker+Valid, 8115 SdHoareTripleChecker+Invalid, 6496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2646 IncrementalHoareTripleChecker+Valid, 3846 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:41:23,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4397 Valid, 8115 Invalid, 6496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2646 Valid, 3846 Invalid, 4 Unknown, 0 Unchecked, 16.2s Time] [2021-11-17 00:41:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145141 states. [2021-11-17 00:41:28,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145141 to 131857. [2021-11-17 00:41:28,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131857 states, 95368 states have (on average 1.3186708329838102) internal successors, (125759), 97647 states have internal predecessors, (125759), 27134 states have call successors, (27134), 8250 states have call predecessors, (27134), 9354 states have return successors, (34266), 26997 states have call predecessors, (34266), 27130 states have call successors, (34266) [2021-11-17 00:41:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131857 states to 131857 states and 187159 transitions. [2021-11-17 00:41:28,984 INFO L78 Accepts]: Start accepts. Automaton has 131857 states and 187159 transitions. Word has length 222 [2021-11-17 00:41:28,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:41:28,985 INFO L470 AbstractCegarLoop]: Abstraction has 131857 states and 187159 transitions. [2021-11-17 00:41:28,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-17 00:41:28,985 INFO L276 IsEmpty]: Start isEmpty. Operand 131857 states and 187159 transitions. [2021-11-17 00:41:29,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-17 00:41:29,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:41:29,009 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:41:29,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-17 00:41:29,010 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:41:29,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:41:29,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1252628714, now seen corresponding path program 1 times [2021-11-17 00:41:29,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:41:29,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535495657] [2021-11-17 00:41:29,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:41:29,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:41:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:41:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:41:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:41:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:41:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:41:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:41:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:41:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:41:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:41:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:41:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:41:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:41:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:41:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:41:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:41:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:41:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:41:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 00:41:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 00:41:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-17 00:41:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 00:41:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 00:41:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 00:41:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-17 00:41:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:41:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-17 00:41:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 00:41:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-17 00:41:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-17 00:41:29,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:41:29,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535495657] [2021-11-17 00:41:29,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535495657] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:41:29,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410020829] [2021-11-17 00:41:29,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:41:29,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:41:29,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:41:29,560 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) [2021-11-17 00:41:29,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 00:41:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:41:30,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 5457 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:41:30,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:41:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2021-11-17 00:41:31,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:41:31,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410020829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:41:31,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:41:31,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2021-11-17 00:41:31,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255791416] [2021-11-17 00:41:31,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:41:31,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:41:31,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:41:31,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:41:31,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:41:31,017 INFO L87 Difference]: Start difference. First operand 131857 states and 187159 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29)